Debt management

Post-Judgment Interest Calculator

Enter the judgment amount, the statutory rate and the time it has been accruing to see the interest and total owed.

  • Free
  • No sign-up
  • Updated for 2026

Judgment & rate

$
%
yr

Enter the judgment, rate and time to see the total owed.

Worked example

With these example inputs:

  • Judgment amount$10,000
  • Annual interest rate6%
  • Time accruing3 yr

Total amount owed: $11,800

  • Starting amount$10,000
  • Total interest$1,800
  • Total of payments$11,800

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What this post-judgment interest calculator does

This calculator shows the total amount owed. You enter the judgment amount, rate, and time accruing. The tool then adds the statutory interest. So you see the interest and the full total. It also shows the principal on its own. You see the result in your currency.

What post-judgment interest is

Post-judgment interest is interest on a court award. It builds up from the date of judgment. So a debt grows until it is paid. A statutory rate is set by law. It rewards the winner for the wait. This tool works out the amount.

How it is calculated

The tool takes the judgment amount. It applies the yearly rate over the time. It uses simple interest on the award. So the interest is the same each year. The result is your total amount owed. The calculator handles this for you.

What the result tells you

The result shows the total amount owed. Ten thousand at six percent over three years owes eleven thousand eight hundred. A higher rate raises it. More time raises it too. So it shows the debt with interest. It is a straightforward figure.

The judgment amount

Your judgment amount is the sum the court awarded. It is the principal the interest runs on. A bigger award raises the interest. So this number sets the base. Use the amount in the judgment. It is the base of the whole sum. Enter your judgment amount.

The statutory rate

Your statutory rate is the yearly rate set by law. It is fixed by the court or the state. A higher rate raises the interest. So this number drives the growth. Use the rate that applies to your case. Rates differ by place and year. Enter your statutory rate.

The time accruing

Your time accruing is how long interest builds. It is the span since the judgment. More time raises the interest. So this number stretches the total. Use the years the debt has run. It counts until the debt is paid. Enter your time accruing.

The interest amount

The tool also shows the interest amount alone. It is the total above the judgment. Here it comes to one thousand eight hundred. So you see the interest on its own. It is the price of the delay. It grows with time and rate.

Simple not compound

Most post-judgment interest is simple interest. It is charged only on the original award. So it does not build on past interest. Each year adds the same amount. Some places do compound it instead. Check the rule that applies to you.

How to use it

Enter your judgment amount first. Add the rate and time accruing. Read the total amount owed in the currency you choose. Then see the interest alone. Try a longer time. Compare two rates. Use it to estimate a payoff.

A final tip

Use this to estimate interest on a judgment. Remember the exact rule varies by place. This is a guide, not legal advice. Some awards use compound interest instead. The clock usually stops once it is paid. Do not rely on it for a court filing. Check your local rule for the exact figure.

Frequently asked questions

How is post-judgment interest calculated?

Most jurisdictions apply simple interest to the judgment. A $10,000 judgment at 6% for 3 years accrues $1,800, for a total of $11,800.

What rate should I use?

Post-judgment interest rates are set by statute and vary by jurisdiction and judgment type. Check the rate that applied on the date judgment was entered, as it can stay fixed for the life of the judgment.