2.4.2 Formula tables & values

Context

The tables and values that are used in calculating assessments made under Part 5 of the CSA Act are included in this topic.

Act references

CSA Act section 5, Part 5, section 155

On this page

Basic values used in calculating child support assessments

Child support period starting in Annualised MTAWE figure Self-support amount (1/3 MTAWE) Default income (2/3 MTAWE) Fixed annual rate of child support Parenting payment single, maximum basic amount (PPS) Minimum annual rate of child support Child support inflation factor
2008 $54,756 $18,252 $36,504 $1,122 $13,980 $339 5.0%
2009 $56,425 $18,808 $37,617 $1,178 $14,615 $356 3.3%
2010 $58,854 $19,618 $39,236 $1,193 $14,937 $360 3.8%
2011 $61,781 $20,594 $41,187 $1,226 $15,909 $370 4.7%
2012 $64,865 $21,622 $43,243 $1,269 $16,679 $383 4.2%
2013 $67,137 $22,379 $44,758 $1,294 $17,256 $391 4.1%
2014 $70,569 $23,523 $47,046 $1,322 $18,197 $399 4.8%
2015 $70,829 $23,610 $47,219 $1,352 $18,728 $408 1.8%
2016 $71,256 $23,752 $47,504 $1,373 $19,011 $414 1.3%
2017 $72462 $24,154 $48,308 $1,390 $19,201 $420 2.1%
2018 $73,606 $24,535 $49,071 $1,416 $19,568 $427 1.6%
2019 $75,114 $25,038 $50,076 $1,443 $19,981 $435 2.4%

Note: Before the end of each calendar year the following amounts must be published in the Australian Government Gazette for all child support periods starting in the following calendar year:

  • the minimum annual rate of child support
  • the fixed annual rate of child support
  • the Costs of the Children Table, incorporating
    • the annualised Male Total Average Weekly Earnings (MTAWE) figure, and
    • other amounts in the table worked out using the annualised MTAWE figure.

Before the end of each financial year the following amounts must be published in the Australian Government Gazette:

  • the Average Weekly Earnings (AWE) amount for the quarter ending on 31 December of that year.

Act reference: CSA Act section 45 Working out the self-support amount, section 58 Determination by the Registrar of a parent's adjusted taxable income, section 65A Annual rate of child support for low income parents not on income support, section 66 Minimum annual rate of child support, section 155 Publication of figures

Male Total Average Weekly Earnings (MTAWE)

The child support legislation uses the annualised MTAWE figure to identify the costs of children at different income levels. The Costs of the Children Table is constructed using income levels divided at each 0.5 of the MTAWE figure until 2.5 times the MTAWE figure is reached. The costs table is updated each year to recognise the changes in MTAWE.

The MTAWE amount is also used to establish and update the self-support amount, which is 1/3 of the MTAWE for the relevant year. The default income that may be used when there is no ATO assessment for a parent for the previous 2 years, or when there is no ATO assessment for a parent is also based on MTAWE, being 2/3 of MTAWE for the relevant year.

Due to a change in the frequency of the average weekly earnings series from quarterly to biannual in 2012, the annualised MTAWE figure will be based on the relevant June quarter and will apply to child support periods starting in 2013. The relevant June quarter means the quarter ending on 30 June of the calendar year ending before the start of the child support period.

For child support periods that started on or before 2012, the annualised MTAWE figure was based on the relevant September quarter ending on 30 September.

Act reference: CSA Act section 5A Definition of annualised MTAWE figure, section 45 Working out the self-support amount, section 58 Determination by the Registrar of a parent's adjusted taxable income, section 155 Publication of figures

Social Security and Other Legislation Amendment (Disability Support Pension Participation Reforms) Act 2012 Schedule 4 Average weekly earnings and other amendments

Parenting Payment (single) maximum basic amount

In determining if the fixed annual rate of child support (2.4.11) is to apply, the parent's adjusted taxable income for the last relevant year of income is considered. If the other conditions are satisfied and the parent's income is less than the pension Parenting Payment (single) maximum basic amount, the fixed annual rate will apply. The value for that amount for child support periods beginning in a particular calendar year are listed in the table above. See 2.4.11 for more information on the fixed annual rate and 2.5.3 for information on applications for the fixed annual rate not to be used.

Act reference: CSA Act section 65A Annual rate of child support for low income parents not on income support

Policy reference: CS Guide 2.4.11 Fixed Annual Rate of Child Support for Certain Low Income Parents, 2.5.3 Application to Have the Fixed Annual Rate of Child Support Not Used

Child support inflation factor

In determining an income to be used in assessments for child support periods commencing before 1 July 2011, the child support legislation used an inflation factor where a parent did not lodge a tax return for the relevant year of income but lodged a tax return for the previous year of income.

The adjusted taxable income was determined based on the tax return for the previous year, multiplied by an inflation factor. The factor was the percentage figure in the 'all employees average weekly earnings amount' for the relevant September quarter, as published by the Australian Bureau of Statistics (ABS), before the calendar year in which the child support period started.

The ATI indexation factor is now used when required to determine incomes to be used in assessments for child support periods commencing after 1 July 2011.

Some child support agreements or court orders specify that the child support inflation factor be used as the indexation value for that agreement or order. Due to a change to the publication frequency of ABS Average Weekly Earnings Catalogue No 6302.0, from 2013 the child support inflation factor will refer to the relevant June quarter, not the September quarter, for child support agreement and court order purposes.

Act reference: CSA Act section 58(3A) Determination by the Registrar of a parent's adjusted taxable income (as in force immediately before 1 July 2011)

Child Support (Assessment) Regulations 1989 regulation 7A Factor for making a determination

Policy reference: CS Guide 2.4.4 Child Support Income

ATI indexation factor

In determining an income to be used in assessments for child support periods commencing on or after 1 July 2011, the child support legislation uses an indexation factor where a parent has not lodged a tax return for the relevant year of income but has lodged a tax return for a previous year of income.

The AWE values (used in the calculation of the ATI indexation factor) that apply to child support periods commencing on or after 1 July 2013 are:

Year (November) AWE Year (November) AWE Year (November) AWE
1989 $457.20 1999 $612.80 2009 $953.70
1990 $490.60 2000 $650.00 2010 $992.50
1991 $501.30 2001 $678.40 2011 $1,033.30
1992 $504.10 2002 $703.30 2012 $1,080.30
1993 $522.30 2003 $744.50 2013 $1,115.40
1994 $543.40 2004 $766.10 2014 $1,128.90
1995 $554.50 2005 $810.60 2015 $1,145.60
1996 $571.90 2006 $846.70 2016 $1,164.60
1997 $591.40 2007 $880.30 2017 $1,191.70
1998 $606.20 2008 $911.30 2018 $1,225.00

The AWE values that apply to child support periods commencing prior to 1 July 2013 (but commencing on or after 1 July 2011) are:

Year (August) AWE Year (August) AWE Year (August) AWE
1993 $525.80 2000 $648.40 2007 $875.10
1994 $539.90 2001 $673.30 2008 $897.90
1995 $551.30 2002 $696.40 2009 $934.70
1996 $569.20 2003 $734.00 2010 $982.90
1997 $583.60 2004 $756.30 2011 $1,026.00
1998 $602.90 2005 $805.40    
1999 $609.60 2006 $839.50    

Act reference: CSA Act section 58 Determination by the Registrar of a parent's adjusted taxable income, section 58AA ATI indexation factor for determinations under section 58

Policy reference: CS Guide 2.4.4 Child Support Income

Costs of the Children Table

The costs table is updated annually to recognise changes in MTAWE. A new table is published for each calendar year, to be used in making assessments for child support periods that start in that year. The costs are indexed to the MTAWE figure. The table, located at clause 1 of Schedule 1 of the CSA Act, shows the percentages used to work out the Costs of the Children Table. It is included at 2.4.6 where the calculation of the costs of the children is explained.

Act reference: CSA Act section 155 Publication of figures, Schedule 1 The Costs of the Children Table

Policy reference: CS Guide 2.4.4 Child Support Income, 2.4.6 The Costs of the Child

Costs of the Children Table 2019

Parents' combined child support income (2.4.4)
Fraction of MTAWE 0.5 1 1.5 2 2.5 Costs of children do not increase above this cap
No. of children $0 to $37,557 $37,558 to $75,114 $75,115 to $112,671 $112,672 to $150,228 $150,229 to $187,785 Income over $187,785
Costs of the children (to be apportioned between parents)
Children aged 0-12 years
1 child 17c for each $1 $6,385 plus 15c for each $1 over $37,557 $12,019 plus 12c for each $1 over $75,114 $16,526 plus 10c for each $1 over $112,671 $20,282 plus 7c for each $1 over $150,228 $22,911
2 children 24c for each $1 $9,014 plus 23c for each $1 over $37,557 $17,652 plus 20c for each $1 over $75,114 $25,163 plus 18c for each $1 over $112,671 $31,923 plus 10c for each $1 over $150,228 $35,679
3 + children 27c for each $1 $10,140 plus 26c for each $1 over $37,557 $19,905 plus 25c for each $1 over $75,114 $29,294 plus 24c for each $1 over $112,671 $38,308 plus 18c for each $1 over $150,228 $45,068
Children aged 13 + years
1 child 23c for each $1 $8,638 plus 22c for each $1 over $37,557 $16,901 plus 12c for each $1 over $75,114 $21,408 plus 10c for each $1 over $112,671 $25,164 plus 9c for each $1 over $150,228 $28,544
2 children 29c for each $1 $10,892 plus 28c for each $1 over $37,557 $21,408 plus 25c for each $1 over $75,114 $30,797 plus 20c for each $1 over $112,671 $38,308 plus 13c for each $1 over $150,228 $43,190
3 + children 32c for each $1 $12,018 plus 31c for each $1 over $37,557 $23,661 plus 30c for each $1 over $75,114 $34,928 plus 29c for each $1 over $112,671 $45,820 plus 20c for each $1 over $150,228 $53,331
Children of mixed age
2 children 26.5c for each $1 $9,953 plus 25.5c for each $1 over $37,557 $19,530 plus 22.5c for each $1 over $75,114 $27,980 plus 19c for each $1 over $112,671 $35,116 plus 11.5c for each $1 over $150,228 $39,435
3 + children 29.5c for each $1 $11,079 plus 28.5c for each $1 over $37,557 $21,783 plus 27.5c for each $1 over $75,114 $32,111 plus 26.5c for each $1 over $112,671 $42,064 plus 19c for each $1 over $150,228 $49,200

Policy reference: CS Guide 2.4.4 Child Support Income

Costs of the Children Table 2018

Parents' combined child support income (2.4.4)
Fraction of MTAWE 0.5 1 1.5 2 2.5 Costs of children do not increase above this cap
No. of children $0 to $36,803 $36,804 to $73,606 $73,607 to $110,409 $110,410 to $147,212 $147,213 to $184,015 Income over $184,015
Costs of the children (to be apportioned between parents)
Children aged 0-12 years
1 child 17c for each $1 $6,257 plus 15c for each $1 over $36,803 $11,777 plus 12c for each $1 over $73,606 $16,193 plus 10c for each $1 over $110,409 $19,873 plus 7c for each $1 over $147,212 $22,449
2 children 24c for each $1 $8,833 plus 23c for each $1 over $36,803 $17,298 plus 20c for each $1 over $73,606 $24,659 plus 18c for each $1 over $110,409 $31,284 plus 10c for each $1 over $147,212 $34,964
3 + children 27c for each $1 $9,937 plus 26c for each $1 over $36,803 $19,506 plus 25c for each $1 over $73,606 $28,707 plus 24c for each $1 over $110,409 $37,540 plus 18c for each $1 over $147,212 $44,165
Children aged 13 + years
1 child 23c for each $1 $8,465 plus 22c for each $1 over $36,803 $16,562 plus 12c for each $1 over $73,606 $20,978 plus 10c for each $1 over $110,409 $24,658 plus 9c for each $1 over $147,212 $27,970
2 children 29c for each $1 $10,673 plus 28c for each $1 over $36,803 $20,978 plus 25c for each $1 over $73,606 $30,179 plus 20c for each $1 over $110,409 $37,540 plus 13c for each $1 over $147,212 $42,324
3 + children 32c for each $1 $11,777 plus 31c for each $1 over $36,803 $23,186 plus 30c for each $1 over $73,606 $34,227 plus 29c for each $1 over $110,409 $44,900 plus 20c for each $1 over $147,212 $52,261
Children of mixed age
2 children 26.5c for each $1 $9,753 plus 25.5c for each $1 over $36,803 $19,138 plus 22.5c for each $1 over $73,606 $27,419 plus 19c for each $1 over $110,409 $34,412 plus 11.5c for each $1 over $147,212 $38,644
3 + children 29.5c for each $1 $10,857 plus 28.5c for each $1 over $36,803 $21,346 plus 27.5c for each $1 over $73,606 $31,467 plus 26.5c for each $1 over $110,409 $41,220 plus 19c for each $1 over $147,212 $48,213

Policy reference: CS Guide 2.4.4 Child Support Income

Costs of the Children Table 2017

Parents' combined child support income (2.4.4)
Fraction of MTAWE 0.5 1 1.5 2 2.5 Costs of children do not increase above this cap
No. of children $0 to $36,231 $36,232 to $72,462 $72,463 to $108,693 $108,694 to $144,924 $144,925 to $181,155 Income over $181,155
Costs of the children (to be apportioned between parents)
Children aged 0-12 years
1 child 17c for each $1 $6,159 plus 15c for each $1 over $36,231 $11,594 plus 12c for each $1 over $72,462 $15,942 plus 10c for each $1 over $108,693 $19,565 plus 7c for each $1 over $144,924 $22,101
2 children 24c for each $1 $8,695 plus 23c for each $1 over $36,231 $17,028 plus 20c for each $1 over $72,462 $24,274 plus 18c for each $1 over $108,693 $30,796 plus 10c for each $1 over $144,924 $34,419
3 + children 27c for each $1 $9,782 plus 26c for each $1 over $36,231 $19,202 plus 25c for each $1 over $72,462 $28,260 plus 24c for each $1 over $108,693 $36,955 plus 18c for each $1 over $144,924 $43,477
Children aged 13 + years
1 child 23c for each $1 $8,333 plus 22c for each $1 over $36,231 $16,304 plus 12c for each $1 over $72,462 $20,652 plus 10c for each $1 over $108,693 $24,275 plus 9c for each $1 over $144,924 $27,536
2 children 29c for each $1 $10,507 plus 28c for each $1 over $36,231 $20,652 plus 25c for each $1 over $72,462 $29,710 plus 20c for each $1 over $108,693 $36,956 plus 13c for each $1 over $144,924 $41,666
3 + children 32c for each $1 $11,594 plus 31c for each $1 over $36,231 $22,826 plus 30c for each $1 over $72,462 $33,695 plus 29c for each $1 over $108,693 $44,202 plus 20c for each $1 over $144,924 $51,448
Children of mixed age
2 children 26.5c for each $1 $9,601 plus 25.5c for each $1 over $36,231 $18,840 plus 22.5c for each $1 over $72,462 $26,992 plus 19c for each $1 over $108,693 $33,876 plus 11.5c for each $1 over $144,924 $38,043
3 + children 29.5c for each $1 $10,688 plus 28.5c for each $1 over $36,231 $21,014 plus 27.5c for each $1 over $72,462 $30,978 plus 26.5c for each $1 over $108,693 $40,579 plus 19c for each $1 over $144,924 $47,463

Policy reference: CS Guide 2.4.4 Child Support Income

Costs of the Children Table 2016

Parents' combined child support income (2.4.4)
Fraction of MTAWE 0.5 1 1.5 2 2.5 Costs of children do not increase above this cap
No. of children $0 to $35,628 $35,629 to $71,256 $71,257 to $106,884 $106,885 to $142,512 $142,513 to $178,140 Income over $178,140
Costs of the children (to be apportioned between parents)
Children aged 0-12 years
1 child 17c for each $1 $6,057 plus 15c for each $1 over $35,628 $11,401 plus 12c for each $1 over $71,256 $15,676 plus 10c for each $1 over $106,884 $19,239 plus 7c for each $1 over $142,512 $21,733
2 children 24c for each $1 $8,551 plus 23c for each $1 over $35,628 $16,745 plus 20c for each $1 over $71,256 $23,871 plus 18c for each $1 over $106,884 $30,284 plus 10c for each $1 over $142,512 $33,847
3 + children 27c for each $1 $9,620 plus 26c for each $1 over $35,628 $18,883 plus 25c for each $1 over $71,256 $27,790 plus 24c for each $1 over $106,884 $36,341 plus 18c for each $1 over $142,512 $42,754
Children aged 13 + years
1 child 23c for each $1 $8,194 plus 22c for each $1 over $35,628 $16,032 plus 12c for each $1 over $71,256 $20,307 plus 10c for each $1 over $106,884 $23,870 plus 9c for each $1 over $142,512 $27,077
2 children 29c for each $1 $10,332 plus 28c for each $1 over $35,628 $20,308 plus 25c for each $1 over $71,256 $29,215 plus 20c for each $1 over $106,884 $36,341 plus 13c for each $1 over $142,512 $40,973
3 + children 32c for each $1 $11,401 plus 31c for each $1 over $35,628 $22,446 plus 30c for each $1 over $71,256 $33,134 plus 29c for each $1 over $106,884 $43,466 plus 20c for each $1 over $142,512 $50,592
Children of mixed age
2 children 26.5c for each $1 $9,441 plus 25.5c for each $1 over $35,628 $18,526 plus 22.5c for each $1 over $71,256 $26,542 plus 19c for each $1 over $106,884 $33,311 plus 11.5c for each $1 over $142,512 $37,408
3 + children 29.5c for each $1 $10,510 plus 28.5c for each $1 over $35,628 $20,664 plus 27.5c for each $1 over $71,256 $30,462 plus 26.5c for each $1 over $106,884 $39,903 plus 19c for each $1 over $142,512 $46,672

Policy reference: CS Guide 2.4.4 Child Support Income

Costs of the Children Table 2015

Parents' combined child support income (2.4.4)
Fraction of MTAWE 0.5 1 1.5 2 2.5 Costs of children do not increase above this cap
No. of children $0 to $35,415 $35,416 to $70,829 $70,830 to $106,244 $106,245 to $141,658 $141,659 to $177,073 Income over $177,073
Costs of the children (to be apportioned between parents)
Children aged 0-12 years
1 child 17c for each $1 $6,021 plus 15c for each $1 over $35,415 $11,333 plus 12c for each $1 over $70,829 $15,583 plus 10c for each $1 over $106,244 $19,124 plus 7c for each $1 over $141,658 $21,603
2 children 24c for each $1 $8,500 plus 23c for each $1 over $35,415 $16,645 plus 20c for each $1 over $70,829 $23,728 plus 18c for each $1 over $106,244 $30,103 plus 10c for each $1 over $141,658 $33,645
3 + children 27c for each $1 $9,562 plus 26c for each $1 over $35,415 $18,770 plus 25c for each $1 over $70,829 $27,624 plus 24c for each $1 over $106,244 $36,123 plus 18c for each $1 over $141,658 $42,498
Children aged 13 + years
1 child 23c for each $1 $8,145 plus 22c for each $1 over $35,415 $15,936 plus 12c for each $1 over $70,829 $20,186 plus 10c for each $1 over $106,244 $23,727 plus 9c for each $1 over $141,658 $26,914
2 children 29c for each $1 $10,270 plus 28c for each $1 over $35,415 $20,186 plus 25c for each $1 over $70,829 $29,040 plus 20c for each $1 over $106,244 $36,123 plus 13c for each $1 over $141,658 $40,727
3 + children 32c for each $1 $11,333 plus 31c for each $1 over $35,415 $22,311 plus 30c for each $1 over $70,829 $32,936 plus 29c for each $1 over $106,244 $43,206 plus 20c for each $1 over $141,658 $50,289
Children of mixed age
2 children 26.5c for each $1 $9,385 plus 25.5c for each $1 over $35,415 $18,416 plus 22.5c for each $1 over $70,829 $26,384 plus 19c for each $1 over $106,244 $33,113 plus 11.5c for each $1 over $141,658 $37,186
3 + children 29.5c for each $1 $10,447 plus 28.5c for each $1 over $35,415 $20,540 plus 27.5c for each $1 over $70,829 $30,279 plus 26.5c for each $1 over $106,244 $39,664 plus 19c for each $1 over $141,658 $46,393

Policy reference: CS Guide 2.4.4 Child Support Income

Costs of the Children Table 2014

Parents' combined child support income (2.4.4)
Fraction of MTAWE 0.5 1 1.5 2 2.5 Costs of children do not increase above this cap
No. of children $0 to $35,285 $35,286 to $70,569 $70,570 to $105,854 $105,855 to $141,138 $141,139 to $176,423 Income over $176,423
Costs of the children (to be apportioned between parents)
Children aged 0-12 years
1 child 17c for each $1 $5,998 plus 15c for each $1 over $35,285 $11,291 plus 12c for each $1 over $70,569 $15,525 plus 10c for each $1 over $105,854 $19,053 plus 7c for each $1 over $141,138 $21,523
2 children 24c for each $1 $8,468 plus 23c for each $1 over $35,285 $16,583 plus 20c for each $1 over $70,569 $23,640 plus 18c for each $1 over $105,854 $29,991 plus 10c for each $1 over $141,138 $33,520
3 + children 27c for each $1 $9,527 plus 26c for each $1 over $35,285 $18,701 plus 25c for each $1 over $70,569 $27,522 plus 24c for each $1 over $105,854 $35,990 plus 18c for each $1 over $141,138 $42,341
Children aged 13 + years
1 child 23c for each $1 $8,116 plus 22c for each $1 over $35,285 $15,878 plus 12c for each $1 over $70,569 $20,112 plus 10c for each $1 over $105,854 $23,640 plus 9c for each $1 over $141,138 $26,816
2 children 29c for each $1 $10,233 plus 28c for each $1 over $35,285 $20,113 plus 25c for each $1 over $70,569 $28,934 plus 20c for each $1 over $105,854 $35,991 plus 13c for each $1 over $141,138 $40,578
3 + children 32c for each $1 $11,291 plus 31c for each $1 over $35,285 $22,229 plus 30c for each $1 over $70,569 $32,815 plus 29c for each $1 over $105,854 $43,047 plus 20c for each $1 over $141,138 $50,104
Children of mixed age
2 children 26.5c for each $1 $9,351 plus 25.5c for each $1 over $35,285 $18,348 plus 22.5c for each $1 over $70,569 $26,287 plus 19c for each $1 over $105,854 $32,991 plus 11.5c for each $1 over $141,138 $37,049
3 + children 29.5c for each $1 $10,409 plus 28.5c for each $1 over $35,285 $20,465 plus 27.5c for each $1 over $70,569 $30,168 plus 26.5c for each $1 over $105,854 $39,518 plus 19c for each $1 over $141,138 $46,222

Policy reference: CS Guide 2.4.4 Child Support Income

Costs of the Children Table 2013

Parents' combined child support income (2.4.4)
Fraction of MTAWE 0.5 1 1.5 2 2.5 Costs of children do not increase above this cap
No. of children $0 to $33,569 $33,570 to $67,137 $67,138 to $100,706 $100,707 to $134,274 $134,275 to $167,843 Income over $167,843
Costs of the children (to be apportioned between parents)
Children aged 0-12 years
1 child 17c for each $1 $5,707 plus 15c for each $1 over $33,569 $10,742 plus 12c for each $1 over $67,137 $14,770 plus 10c for each $1 over $100,706 $18,127 plus 7c for each $1 over $134,274 $20,477
2 children 24c for each $1 $8,057 plus 23c for each $1 over $33,569 $15,778 plus 20c for each $1 over $67,137 $22,492 plus 18c for each $1 over $100,706 $28,534 plus 10c for each $1 over $134,274 $31,891
3 + children 27c for each $1 $9,064 plus 26c for each $1 over $33,569 $17,792 plus 25c for each $1 over $67,137 $26,184 plus 24c for each $1 over $100,706 $34,240 plus 18c for each $1 over $134,274 $40,282
Children aged 13 + years
1 child 23c for each $1 $7,721 plus 22c for each $1 over $33,569 $15,106 plus 12c for each $1 over $67,137 $19,134 plus 10c for each $1 over $100,706 $22,491 plus 9c for each $1 over $134,274 $25,512
2 children 29c for each $1 $9,735 plus 28c for each $1 over $33,569 $19,134 plus 25c for each $1 over $67,137 $27,526 plus 20c for each $1 over $100,706 $34,240 plus 13c for each $1 over $134,274 $38,604
3 + children 32c for each $1 $10,742 plus 31c for each $1 over $33,569 $21,148 plus 30c for each $1 over $67,137 $31,219 plus 29c for each $1 over $100,706 $40,954 plus 20c for each $1 over $134,274 $47,668
Children of mixed age
2 children 26.5c for each $1 $8,896 plus 25.5c for each $1 over $33,569 $17,456 plus 22.5c for each $1 over $67,137 $25,009 plus 19c for each $1 over $100,706 $31,387 plus 11.5c for each $1 over $134,274 $35,247
3 + children 29.5c for each $1 $9,903 plus 28.5c for each $1 over $33,569 $19,470 plus 27.5c for each $1 over $67,137 $28,701 plus 26.5c for each $1 over $100,706 $37,597 plus 19c for each $1 over $134,274 $43,975

Policy reference: CS Guide 2.4.4 Child Support Income

Costs of the Children Table 2012

Parents' combined child support income (2.4.4)
Fraction of MTAWE 0.5 1 1.5 2 2.5 Costs of children do not increase above this cap
No. of children $0 to $32,433 $32,434 to $64,865 $64,866 to $97,298 $97,299 to $129,730 $129,731 to $162,163 Income over $162,163
Costs of the children (to be apportioned between parents)
Children aged 0-12 years
1 child 17c for each $1 $5,514 plus 15c for each $1 over $32,433 $10,379 plus 12c for each $1 over $64,865 $14,271 plus 10c for each $1 over $97,298 $17,514 plus 7c for each $1 over $129,730 $19,784
2 children 24c for each $1 $7,784 plus 23c for each $1 over $32,433 $15,243 plus 20c for each $1 over $64,865 $21,730 plus 18c for each $1 over $97,298 $27,568 plus 10c for each $1 over $129,730 $30,811
3 + children 27c for each $1 $8,757 plus 26c for each $1 over $32,433 $17,189 plus 25c for each $1 over $64,865 $25,297 plus 24c for each $1 over $97,298 $33,081 plus 18c for each $1 over $129,730 $38,919
Children aged 13 + years
1 child 23c for each $1 $7,460 plus 22c for each $1 over $32,433 $14,595 plus 12c for each $1 over $64,865 $18,487 plus 10c for each $1 over $97,298 $21,730 plus 9c for each $1 over $129,730 $24,649
2 children 29c for each $1 $9,406 plus 28c for each $1 over $32,433 $18,487 plus 25c for each $1 over $64,865 $26,595 plus 20c for each $1 over $97,298 $33,081 plus 13c for each $1 over $129,730 $37,297
3 + children 32c for each $1 $10,379 plus 31c for each $1 over $32,433 $20,433 plus 30c for each $1 over $64,865 $30,163 plus 29c for each $1 over $97,298 $39,568 plus 20c for each $1 over $129,730 $46,055
Children of mixed age
2 children 26.5c for each $1 $8,595 plus 25.5c for each $1 over $32,433 $16,865 plus 22.5c for each $1 over $64,865 $24,162 plus 19c for each $1 over $97,298 $30,324 plus 11.5c for each $1 over $129,730 $34,054
3 + children 29.5c for each $1 $9,568 plus 28.5c for each $1 over $32,433 $18,811 plus 27.5c for each $1 over $64,865 $27,730 plus 26.5c for each $1 over $97,298 $36,324 plus 19c for each $1 over $129,730 $42,486

Policy reference: CS Guide 2.4.4 Child Support Income

Costs of the Children Table 2011

Parents' combined child support income (2.4.4)
Fraction of MTAWE 0.5 1 1.5 2 2.5 Costs of children do not increase above this cap
No. of children $0 to $30,891 $30,892 to $61,781 $61,782 to $92,672 $92,673 to $123,562 $123,563 to $154,453 Income over $154,453
Costs of the children (to be apportioned between parents)
Children aged 0-12 years
1 child 17c for each $1 $5,251 plus 15c for each $1 over $30,891 $9,885 plus 12c for each $1 over $61,781 $13,592 plus 10c for each $1 over $92,672 $16,681 plus 7c for each $1 over $123,562 $18,843
2 children 24c for each $1 $7,414 plus 23c for each $1 over $30,891 $14,519 plus 20c for each $1 over $61,781 $20,697 plus 18c for each $1 over $92,672 $26,257 plus 10c for each $1 over $123,562 $29,346
3 + children 27c for each $1 $8,341 plus 26c for each $1 over $30,891 $16,372 plus 25c for each $1 over $61,781 $24,095 plus 24c for each $1 over $92,672 $31,509 plus 18c for each $1 over $123,562 $37,069
Children aged 13 + years
1 child 23c for each $1 $7,105 plus 22c for each $1 over $30,891 $13,901 plus 12c for each $1 over $61,781 $17,608 plus 10c for each $1 over $92,672 $20,697 plus 9c for each $1 over $123,562 $23,477
2 children 29c for each $1 $8,958 plus 28c for each $1 over $30,891 $17,607 plus 25c for each $1 over $61,781 $25,330 plus 20c for each $1 over $92,672 $31,508 plus 13c for each $1 over $123,562 $35,524
3 + children 32c for each $1 $9,885 plus 31c for each $1 over $30,891 $19,461 plus 30c for each $1 over $61,781 $28,728 plus 29c for each $1 over $92,672 $37,686 plus 20c for each $1 over $123,562 $43,864
Children of mixed age
2 children 26.5c for each $1 $8,186 plus 25.5c for each $1 over $30,891 $16,063 plus 22.5c for each $1 over $61,781 $23,013 plus 19c for each $1 over $92,672 $28,882 plus 11.5c for each $1 over $123,562 $32,434
3 + children 29.5c for each $1 $9,113 plus 28.5c for each $1 over $30,891 $17,917 plus 27.5c for each $1 over $61,781 $26,412 plus 26.5c for each $1 over $92,672 $34,598 plus 19c for each $1 over $123,562 $40,467

Policy reference: CS Guide 2.4.4 Child Support Income

Costs of the Children Table 2010

Parents' combined child support income (2.4.4)
Fraction of MTAWE 0.5 1 1.5 2 2.5 Costs of children do not increase above this cap
No. of children $0 to $29,427 $29,428 to $58,854 $58,855 to $88,281 $88,282 to $117,708 $117,709 to $147,135 Income over $147,135
Costs of the children (to be apportioned between parents)
Children aged 0-12 years
1 child 17c for each $1 $5,003 plus 15c for each $1 over $29,427 $9,417 plus 12c for each $1 over $58,854 $12,948 plus 10c for each $1 over $88,281 $15,891 plus 7c for each $1 over $117,708 $17,951
2 children 24c for each $1 $7,062 plus 23c for each $1 over $29,427 $13,830 plus 20c for each $1 over $58,854 $19,715 plus 18c for each $1 over $88,281 $25,012 plus 10c for each $1 over $117,708 $27,955
3 + children 27c for each $1 $7,945 plus 26c for each $1 over $29,427 $15,596 plus 25c for each $1 over $58,854 $22,953 plus 24c for each $1 over $88,281 $30,015 plus 18c for each $1 over $117,708 $35,312
Children aged 13 + years
1 child 23c for each $1 $6,768 plus 22c for each $1 over $29,427 $13,242 plus 12c for each $1 over $58,854 $16,773 plus 10c for each $1 over $88,281 $19,716 plus 9c for each $1 over $117,708 $22,364
2 children 29c for each $1 $8,534 plus 28c for each $1 over $29,427 $16,774 plus 25c for each $1 over $58,854 $24,131 plus 20c for each $1 over $88,281 $30,016 plus 13c for each $1 over $117,708 $33,842
3 + children 32c for each $1 $9,417 plus 31c for each $1 over $29,427 $18,539 plus 30c for each $1 over $58,854 $27,367 plus 29c for each $1 over $88,281 $35,901 plus 20c for each $1 over $117,708 $41,786
Children of mixed age
2 children 26.5c for each $1 $7,798 plus 25.5c for each $1 over $29,427 $15,302 plus 22.5c for each $1 over $58,854 $21,923 plus 19c for each $1 over $88,281 $27,514 plus 11.5c for each $1 over $117,708 $30,898
3 + children 29.5c for each $1 $8,681 plus 28.5c for each $1 over $29,427 $17,068 plus 27.5c for each $1 over $58,854 $25,160 plus 26.5c for each $1 over $88,281 $32,958 plus 19c for each $1 over $117,708 $38,549

Policy reference: CS Guide 2.4.4 Child Support Income

Costs of the Children Table 2009

Parents' combined child support income (2.4.4)
Fraction of MTAWE 0.5 1 1.5 2 2.5 Costs of children do not increase above this cap
No. of children $0 to $28,213 $28,214 to $56,425 $56,426 to $84,638 $84,639 to $112,850 $112,851 to $141,063 Income over $141,063
Costs of the children (to be apportioned between parents)
Children aged 0-12 years
1 child 17c for each $1 $4,796 plus 15c for each $1 over $28,213 $9,028 plus 12c for each $1 over $56,425 $12,414 plus 10c for each $1 over $84,638 $15,235 plus 7c for each $1 over $112,850 $17,210
2 children 24c for each $1 $6,771 plus 23c for each $1 over $28,213 $13,260 plus 20c for each $1 over $56,425 $18,903 plus 18c for each $1 over $84,638 $23,981 plus 10c for each $1 over $112,850 $26,802
3 + children 27c for each $1 $7,618 plus 26c for each $1 over $28,213 $14,953 plus 25c for each $1 over $56,425 $22,006 plus 24c for each $1 over $84,638 $28,777 plus 18c for each $1 over $112,850 $33,855
Children aged 13 + years
1 child 23c for each $1 $6,489 plus 22c for each $1 over $28,213 $12,696 plus 12c for each $1 over $56,425 $16,082 plus 10c for each $1 over $84,638 $18,903 plus 9c for each $1 over $112,850 $21,442
2 children 29c for each $1 $8,182 plus 28c for each $1 over $28,213 $16,081 plus 25c for each $1 over $56,425 $23,134 plus 20c for each $1 over $84,638 $28,776 plus 13c for each $1 over $112,850 $32,444
3 + children 32c for each $1 $9,028 plus 31c for each $1 over $28,213 $17,774 plus 30c for each $1 over $56,425 $26,238 plus 29c for each $1 over $84,638 $34,419 plus 20c for each $1 over $112,850 $40,062
Children of mixed age
2 children 26.5c for each $1 $7,476 plus 25.5c for each $1 over $28,213 $14,670 plus 22.5c for each $1 over $56,425 $21,018 plus 19c for each $1 over $84,638 $26,378 plus 11.5c for each $1 over $112,850 $29,622
3 + children 29.5c for each $1 $8,323 plus 28.5c for each $1 over $28,213 $16,363 plus 27.5c for each $1 over $56,425 $24,122 plus 26.5c for each $1 over $84,638 $31,598 plus 19c for each $1 over $112,850 $36,958

Policy reference: CS Guide 2.4.4 Child Support Income

Costs of the Children Table 2008

Parents' combined child support income (2.4.4)
Fraction of MTAWE 0.5 1 1.5 2 2.5 Costs of children do not increase above this cap
No. of children $0 to $27,378 $27,379 to $54,756 $54,757 to $82,134 $82,135 to $109,512 $109,513 to $136,890 Income over $136,890
Costs of the children (to be apportioned between parents)
Children aged 0-12 years
1 child 17c for each $1 $4,654 plus 15c for each $1 over $27,378 $8,761 plus 12c for each $1 over $54,756 $12,046 plus 10c for each $1 over $82,134 $14,784 plus 7c for each $1 over $109,512 $16,700
2 children 24c for each $1 $6,571 plus 23c for each $1 over $27,378 $12,868 plus 20c for each $1 over $54,756 $18,344 plus 18c for each $1 over $82,134 $23,272 plus 10c for each $1 over $109,512 $26,010
3 + children 27c for each $1 $7,392 plus 26c for each $1 over $27,378 $14,510 plus 25c for each $1 over $54,756 $21,355 plus 24c for each $1 over $82,134 $27,926 plus 18c for each $1 over $109,512 $32,854
Children aged 13 + years
1 child 23c for each $1 $6,297 plus 22c for each $1 over $27,378 $12,320 plus 12c for each $1 over $54,756 $15,605 plus 10c for each $1 over $82,134 $18,343 plus 9c for each $1 over $109,512 $20,807
2 children 29c for each $1 $7,940 plus 28c for each $1 over $27,378 $15,606 plus 25c for each $1 over $54,756 $22,451 plus 20c for each $1 over $82,134 $27,927 plus 13c for each $1 over $109,512 $31,486
3 + children 32c for each $1 $8,761 plus 31c for each $1 over $27,378 $17,248 plus 30c for each $1 over $54,756 $25,461 plus 29c for each $1 over $82,134 $33,401 plus 20c for each $1 over $109,512 $38,877
Children of mixed age
2 children 26.5c for each $1 $7,255 plus 25.5c for each $1 over $27,378 $14,236 plus 22.5c for each $1 over $54,756 $20,396 plus 19c for each $1 over $82,134 $25,598 plus 11.5c for each $1 over $109,512 $28,746
3 + children 29.5c for each $1 $8,077 plus 28.5c for each $1 over $27,378 $15,880 plus 27.5c for each $1 over $54,756 $23,409 plus 26.5c for each $1 over $82,134 $30,664 plus 19c for each $1 over $109,512 $35,866

Policy reference: CS Guide 2.4.4 Child Support Income

Cost percentage table

A parent's or non-parent carer's cost percentage represents the percentage of a child's costs the person meets directly through care. The cost percentage is determined according to the person's percentage of care, using the cost percentages table.

Percentage of Care Cost percentage
0 to less than 14% Nil
14% to less than 35% 24%
35% to less than 48% 25% plus 2% for each percentage point over 35%
48% to 52% 50%
More than 52% to 65% 51% plus 2% for each percentage point over 53%
More than 65% to 86% 76%
More than 86% to 100% 100%

See 2.4.5 for information on how the cost percentage is calculated, and its use in determining the child support percentage.

See 2.2.1 for information on how the percentage of care is calculated.

Act reference: CSA Act section 55C Working out cost percentages

Policy reference: CS Guide 2.2.1 Basics of Care, 2.4.5 Care, cost & child support percentages

Last reviewed: 1 July 2019