California Child Support Arrears Calculator

Welcome to the Arrears Calculator. Using this simple tool, you can estimate the total cost and time it will take to pay off your past due balance based on the arrears payment you are making.

Calculate By Number of Months Calculate By Monthly Payment

*Note - this calculation represents an estimate for paying off past due child support in California, and should not be used for any other purpose.


Arrears Data By Monthly Payment

Please fill in the spaces below, and press the "Calculate" button to continue.
Press here for help.


Arrears Data By Months to Liquidate

Please fill in the spaces below, and press the "Calculate" button to continue.
Enter Principal, Interest, and the number of Months you want to pay to get the monthly arrears payment you will need to make.



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Liquidation Summary

Arrears Data

Outstanding Principal:
Outstanding Interest:
Payment Made Today:
Total Remaining Balance:
Monthly Payment Amount:
Today's Date:
Liquidation Summary

Annual Interest Rate:
Months To Pay Principal:
Months to Liquidate Debt:
Number of Payments Per Year:
Total Applied To Interest:
Total Payments:
View Payment Schedule
Arrears Data Help

To use this simple application you will need to obtain your balance information. You can obtain this information by doing one of the following:

Outstanding Principal: This is the total amount of support that needs to be paid off.

Outstanding Interest: California Code of Civil Procedure § 685.010 states that interest accrues at the rate of 10% per year on the principal amount of a money judgment that is unsatisfied. Interest is charged on all DCSS cases at the rate of 10% per year, with the following exemptions:

  • A court order states a different interest rate to be charged
  • A court order from another state will have interest assessed at that state's legal rate
  • The NP is on active duty and therefore qualifies for 6% interest based on the Soldiers and Sailors Act.

Payment Made Today: This is the amount you paid toward your past due obligation today. If you haven't made a payment today you still can by making a credit card payment online at: If you are not able to make a payment today, enter "0".

Monthly Payment Amount: This is the amount you are paying toward the outstanding principal and interest, which is in addition to any current monthly child support amount you are paying.

Today's Date: This date corresponds with the Outstanding Principal and Outstanding Interest balance information you entered above.

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