Post Judgment Interest Calculator

Calculate accrued interest, average daily interest, total judgment balance, and elapsed time based on the judgment amount, rate, method, and dates. Post Judgment Interest Calculator helps creditors, attorneys, and debtors estimate updated judgment balances for collection, settlement, and repayment planning.

Highlights

  • Estimate accrued interest on unpaid court judgments.
  • Calculate the total judgment balance, including interest.
  • Choose between simple interest and daily compounding methods.
  • View average daily interest and elapsed days.
  • Supports USD, CAD, GBP, EUR, and AUD calculations.

Table of Contents

  1. How Post Judgment Interest Calculator Works?
  2. Practical Use Cases
  3. Accuracy and Limitations
  4. Quick Examples
  5. Frequently Asked Questions (FAQs)
  6. Cite This Calculator

How Post Judgment Interest Calculator Works?

The Post Judgment Interest Calculator estimates the interest accumulated on an unpaid court judgment between a selected judgment date and calculation date. It uses the original judgment amount, annual interest rate, elapsed calendar days, and the selected interest method.

The elapsed period is the number of calendar days between the two dates:

d=calculation date-judgment date

The annual percentage rate is expressed as a decimal in the formulas. For example, a 6% annual rate becomes 0.06. Under simple interest, accrued interest is calculated from the original judgment amount:

I=P⁢r⁢d365

In this formula, P is the judgment amount, r is the annual interest rate as a decimal, d is the elapsed number of days, and I is accrued interest. The calculator then adds accrued interest to the original judgment amount:

B=P+I

When daily compounding is selected, interest is added to the balance each day. The calculation is:

I=P⁢1+r365d-1

The total judgment balance is the original amount plus the calculated interest. Average daily interest is the accrued interest divided by the elapsed days:

A=Id

OutputMeaning
Accrued InterestTotal interest accumulated during the selected period.
Total Judgment BalanceOriginal judgment amount plus accrued interest.
Average Daily InterestAverage amount of interest accumulating per elapsed day.
Elapsed DaysNumber of calendar days between the judgment date and calculation date.

For example, with a judgment amount of 10,000, a 6% annual rate, and 366 elapsed days, simple interest is approximately 601.64, producing an estimated balance of 10,601.64 before rounding.

Practical Use Cases

Creditors and judgment holders: A creditor can estimate the current amount owed before sending a collection demand, negotiating a settlement, or reviewing whether a payment adequately covers the judgment balance and accumulated interest.

Attorneys: Attorneys can use the calculator to prepare approximate balance statements, support settlement discussions, and explain how the judgment amount changes over time under simple interest or daily compounding assumptions.

Debtors: A debtor can estimate the balance needed to satisfy a judgment, compare repayment or settlement scenarios, and plan for the additional interest that may accrue before payment is completed.

Collection professionals: Collection agencies and recovery teams can use the elapsed days, accrued interest, and total judgment balance to organize account reviews and develop payment proposals.

Accountants and financial planners: Professionals responsible for cash-flow planning can estimate the expected obligation associated with an unpaid judgment and include the projected balance in financial schedules.

Legal researchers and students: Users studying judgment enforcement can compare the effect of elapsed time, annual rates, and interest methods on a hypothetical unpaid balance.

Accuracy and Limitations

The calculator provides an estimate based on the entered judgment amount, annual rate, two dates, and selected interest method. It uses the elapsed calendar days and a 365-day annual calculation basis, with results subject to normal rounding. It does not account for partial payments, additional court costs, attorney fees, payment credits, balance reductions, changing statutory rates, rate changes during the judgment period, leap-year-specific legal conventions, or jurisdiction-specific rules about when interest begins and whether compounding is permitted. The applicable court order and local law should control the final amount, so the result should be verified before use in a legal demand, payoff statement, filing, or settlement agreement.

Quick Examples

Example #1: Standard One-Year Judgment

Estimates interest and the updated balance for a $10,000 judgment accruing simple interest over one year.

Example #2: Long-Term Compounding Balance

Projects the balance of a larger court judgment using daily compounding over multiple years.

Example #3: Canadian Settlement Estimate

Calculates the accrued interest and repayment balance for a Canadian-dollar judgment before settlement discussions.

Frequently Asked Questions

Interest generally begins on the date specified in the judgment or under applicable jurisdictional rules. The start date can vary by court and case type.

Interest is typically based on the unpaid judgment principal. Whether costs, fees, payments, or prior interest are included depends on applicable law and the terms of the judgment.

Yes, payments generally reduce the outstanding balance and future interest accrual. The order in which payments are applied—such as to costs, interest, or principal—may be governed by local rules.

No. The applicable rate may depend on the jurisdiction, judgment date, case type, contract terms, or a rate stated by the court.

The parties may sometimes agree to settle, reduce, or waive accrued interest, subject to court rules and any required approval. A written agreement should clearly state the terms.

Cite This Calculator