2018 Massachusetts Child Support Calculator

The Massachusetts Child Support Guidelines were updated and the new 2021 Massachusetts Child Support Guidelines took effect on October 4, 2021. For the 2021 Massachusetts Child Support Guidelines calculator click here.

Below is our 2017-2018 Massachusetts Child Support Guidelines Calculator based on the worksheet from May 18, 2018.

To download the results on the court form worksheet go to the end of the form and click “Download the form as PDF”

1. AGE, NUMBER, AND PARENTING OF CHILDREN
a. Number of children who may be eligible to be covered by this order
Please enter a number from 1 to 5.
b. Check the box that applies to the children listed in 1(a)
(check one box only)
(check one box only)

The parents share financial responsibilities and parenting time approximately equally (shared)

The children primarily reside with one parent for approximately 2/3 of the time

There is more than one child covered by the order and each parent provides a primary residence for at least one child (split)
c. Enter each parent's name
If you checked Box 2 above, enter the name of the parent with whom the children primarily reside in the column for Parent A, and the other parent's name as Parent B; otherwise, enter either parent's name in either column
Parent A
Parent B
Enter the number and age of children for whom each parent may be eligible to receive support
If you checked Box 1 above (shared), enter the number of children from 1(a) in the columns for both parents
If you checked Box 2 above, enter the number of children from 1(a) in the column for Parent A, and enter 0 in the column for Parent B
If you checked Box 3 above (split), enter the number of children primarily residing with each parent in each column
d. Number of children under age 18
Parent A
Parent B
e. Number of children 18 years or older
Parent A
Parent B
2. INCOME
a. Gross weekly income
Parent A
Parent B
b. Minus Child care cost paid
Parent A
Parent B
c. Minus Health care cost paid
Parent A
Parent B
d. Minus Dental/vision insurance cost paid
Parent A
Parent B
e. Minus Other support obligations paid
Parent A
Parent B

Save and Continue Later

RESULTS

Payor's presumptive final support obligation
See full worksheet calculation below:
Payor's Net Support Obligation
1. AGE, NUMBER, AND PARENTING OF CHILDREN (cont.)

f. Total number of children
Parent A
Parent B
2. INCOME (cont.)

f. Available income
2(a) - Sum of 2(b) through 2(e), but not less than $0
Parent A
Parent B

g. Combined available income
Parent A 2(f) + Parent B 2(f)

h. Share of combined available income
2(f) ÷2(g) (Min 0%, Max 100%)
Parent A
Please enter a number from 0 to 100.
Parent B
Please enter a number from 0 to 100.
3. GROSS SUPPORT AMOUNTS

a. Applicable available income
2(g) or $4,808, whichever is less

b. Support amount for one child
From Table A or Guidelines Chart for 3(a)

c. Adjustment for the number of children in 1(f)
From Table B
Parent A
Parent B

d. Combined support amount
3(b) x 3(c)
Parent A
Parent B
4. ADJUSTMENTS FOR CHILDREN 18 YEARS OR OLDER

a. Adjustment percentage for the ages of the children listed in 1(d) and 1(e)
From Table C
Parent A
Please enter a number from 0 to 100.
Parent B
Please enter a number from 0 to 100.

b. Adjustment for children 18 years or older
3(d) x 4(a)
Parent A
Parent B

c. Adjusted combined support amount
3(d) - 4(b)
Parent A
Parent B
5. PROPORTIONAL SUPPORT AMOUNTS

a. Minus Each parent's share of support
2(h) x 4(c)
Parent A
Parent B

b. Other parent's share of support
4(c) - 5(a)
Parent A
Parent B

c. Support as % of each parent's available income
If you checked Box 2 in 1(b), enter N/A
if you checked Box 1 or Box 3 in 1(b), enter 5(b) ÷ 2(f) (If 2(f) = $0, enter 100%)
Parent A
Please enter a number from 0 to 100.
Parent B
Please enter a number from 0 to 100.

d. Other parent's adjusted share of support
If 5(c) is N/A, enter 5(b) or $25, whichever is more, for Parent A and $0 for Parent B
If 5(c) is >= 10%, enter 5(b) or $25, whichever is more
If 5(c) is < 10%, enter 5(b) or ((5(c) + 10%) x 2(f)), whichever is less, but not less than $25
Parent A
Parent B

e. Recipient and Payor
Enter "Recipient" in the column where 5(d) is higher and "Payor" in the other column
If 5(d) is the same in both columns, enter "Recipient" in either column and "Payor" in the other
Parent A

Parent B

f. Payor's net share of support
Recipient 5(d) - Payor 5(d)
6. ADJUSTMENT FOR CHILD CARE AND HEALTH CARE COSTS

a. Child care and health care cost paid
2(b) + 2(c) + 2(d)
Parent A
Parent B

b. Payor's share of Recipient's cost
Payor 2(h) x Recipient 6(a)

c. Minus Recipient's share of Payor's cost
Recipient 2(h) x Payor 6(a)

d. Payor's net cost
6(b) - 6(c)

e. Maximum adjustment amount
If 6(a) = $0 for both parents, enter $0; otherwise enter 5(f) x 0.15

f. Adjustment applied to this order
If 6(d) < $0, enter $0; otherwise enter 6(d) or 6(e), whichever is less

g. Adjustment applied to this order
If 6(d) >= $0, enter $0; otherwise enter the positive value of 6(d) or 6(e), whichever is less

h. Payor's adjusted net share of support
5(f) + 6(f) - 6(g)
7. PAYOR'S NET SUPPORT OBLIGATION

a. Support as % of Recipient's available income
If you checked Box 1 or Box 3 in 1(b), enter N/A
If you checked Box 2 in 1(b), enter 6(h) ÷ Recipient 2(f) (If Recipient 2(f) = 0, enter 100%)
Please enter a number from 0 to 100.

b. Payor's final support obligation
If 7(a) is N/A, enter 6(h)
If 7(a) >= 10%, enter 6(h) or $25, whichever is more
If 7(a) < 10%, enter 6(h) or ((7(a) + 10%) x Payor 2(f)), whichever is less, but not less than $25
Payor's Net Support Obligation
8. ADDITIONAL INCOME ABOVE $4808

a. Combined additional income
2(g) - $4,808 or $0, whichever is more

b. Share of combined additional income
8(a) x 2(h)
Parent A
Parent B

Save and Continue Later

Links related to the 2017 Child Support Guidelines:

8 Changes in the 2017 Massachusetts Child Support Guidelines

The 2017 Massachusetts Child Support Guidelines

The 2017 Massachusetts Child Support Court Form Worksheet

All Information related the 2017 and 2013 Guidelines

Information on Mediation

Information on Collaborative Law