Interest on a money judgment is the court-ordered charge that compensates the winning party for the time they went without funds that were rightfully theirs. It comes in two parts. Pre-judgment interest covers the stretch between the injury or breach and the court’s ruling. Post-judgment interest runs from the ruling until the losing party pays in full. In federal court the post-judgment rate has been running between roughly 3.5% and 3.8% in early-to-mid 2026, tied to Treasury yields.1United States Courts. Post Judgment Interest Rate State rates often run considerably higher. On a large judgment held for several years, interest can add tens of thousands of dollars to what’s owed, and the IRS treats it as taxable income even when the underlying award isn’t.
Pre-Judgment Interest
Pre-judgment interest reimburses the plaintiff for lost use of money during the period between the harm and the court’s final decision. Whether a court awards it depends largely on whether the amount owed was clear from the start.
When the amount is fixed and calculable, courts are far more willing to add it. An unpaid invoice, a defaulted promissory note, a straightforward contract balance. These are sometimes called “liquidated” damages because the math is simple: a specific sum was due on a specific date, and the defendant didn’t pay. Interest typically starts running from the date payment was originally due, not the date the lawsuit was filed. If you were supposed to be paid $50,000 on March 1 and the case doesn’t resolve for three years, you lost the use of that money the entire time.
When the amount requires estimation or subjective judgment, pre-judgment interest becomes harder to obtain. Damages for pain and suffering, emotional distress, or lost business opportunities often fall into this category because no one knows the dollar figure until a judge or jury announces it. Many jurisdictions deny pre-judgment interest on these claims entirely, reasoning that you can’t charge interest on a debt that didn’t have a definite amount until the verdict.
In federal court, pre-judgment interest is not guaranteed by statute. Federal judges have discretion to award it based on the circumstances, and they often look to the law of the state where the court sits for guidance on rates and eligibility. State rules vary. Some states award pre-judgment interest automatically on liquidated claims; others require the plaintiff to request it. Statutory rates for this phase generally fall between 5% and 10% per year.
Contracts can override the default. If a loan agreement or commercial contract specifies an interest rate, that rate usually controls, provided it doesn’t violate the state’s usury laws. Usury caps vary dramatically across states.
Post-Judgment Interest
Once a court enters a final judgment, interest shifts to a different footing. Post-judgment interest is nearly always mandatory. Its purpose is to prevent the losing party from benefiting by dragging out payment. The clock starts the moment the clerk enters the judgment into the court’s official records.
Federal Rate
Federal courts use the formula set by 28 U.S.C. ยง 1961. The rate equals the weekly average one-year constant maturity Treasury yield published by the Federal Reserve for the calendar week before the judgment date.2Office of the Law Revision Counsel. 28 USC 1961 – Interest For judgments entered in early-to-mid 2026, that rate has been running between roughly 3.5% and 3.8%.1United States Courts. Post Judgment Interest Rate The rate is locked in at the time of the judgment and stays the same even if Treasury yields shift afterward.
This rate is often lower than plaintiffs expect. A $200,000 federal judgment at 3.5% generates only $7,000 per year, which gives defendants less urgency to pay quickly than a comparable state judgment would.
State Rates
State post-judgment interest rates tend to be higher and more varied. Some states use fixed rates set by statute. Others tie their rates to a financial benchmark plus a set number of percentage points. Fixed-rate states commonly set the figure between 7.5% and 10% per year, and a handful go higher. Variable-rate states might peg their rate to the Federal Reserve discount rate or the prime rate and then add several percentage points.
The policy goal behind higher state rates is to discourage defendants from treating a court judgment like a cheap loan. At 10%, a $200,000 judgment grows by $20,000 annually. Whichever method a state uses, the rate is typically fixed when the judgment is entered and stays constant until the debt is satisfied.
What Happens During an Appeal
Filing an appeal does not freeze interest. Post-judgment interest continues to accrue while the case moves through the appellate courts, which can easily take one to three years.1United States Courts. Post Judgment Interest Rate If the appeal fails, the losing party owes the full judgment plus every dollar of interest accumulated along the way.
A defendant who wants to pause enforcement during the appeal typically must post a supersedeas bond covering the judgment plus estimated interest and costs for the expected appeal duration. The bond guarantees payment if the appeal loses. Even with a bond in place, interest still accrues on the judgment itself; the bond simply ensures the money is there to pay it.
This is where appeals get expensive fast. A defendant appealing a $500,000 judgment in a state with a 10% post-judgment rate faces $50,000 per year in additional exposure, on top of appellate attorney fees. That math kills a lot of marginal appeals before they start.
Simple vs. Compound Interest
Whether interest compounds makes an enormous difference over time, and the rules depend on which court system you’re in.
Simple interest is calculated only on the original judgment amount. A $100,000 judgment at 10% simple interest grows by exactly $10,000 per year, every year. After five years, the total interest owed is $50,000.
Compound interest adds each period’s accrued interest to the principal, so future interest is calculated on a growing balance. Under annual compounding, the same $100,000 judgment at 10% would generate $10,000 in year one, $11,000 in year two (10% of $110,000), and so on. After five years, the total interest exceeds $61,000.
Federal post-judgment interest compounds. The statute explicitly states that interest “shall be compounded annually.”2Office of the Law Revision Counsel. 28 USC 1961 – Interest Because the federal rate is relatively low, the compounding effect is modest, but on large judgments held over many years it still adds up.
Most state courts default to simple interest on judgments unless a statute specifically authorizes compounding. Pre-judgment interest is also typically simple unless the underlying contract called for compounding. If a contract allowed monthly compounding, a court will generally honor that when calculating pre-judgment interest. Always check both the statute and the contract.
How Partial Payments Are Applied
When a debtor makes payments on a judgment in installments, the law follows a specific order of priority. Each payment is applied first to accrued interest, then to the principal. Only after all accumulated interest is cleared does any remaining portion of the payment chip away at the underlying judgment amount.
Suppose a debtor owes a $100,000 judgment with $8,000 in accrued interest and makes a $10,000 payment. The first $8,000 clears the interest, and only $2,000 reduces the principal to $98,000. Future interest then accrues on $98,000.
Interest stops accruing only when the judgment is fully satisfied, meaning the debtor has paid the entire principal, all accumulated interest, and any court-authorized costs. At that point, the creditor is typically required to file a satisfaction of judgment with the court to officially close out the obligation. Failing to file it promptly can expose the creditor to penalties in many jurisdictions, including liability for the debtor’s damages and attorney fees. If you’ve paid off a judgment and the creditor hasn’t filed the satisfaction, send a written demand. Most states give the creditor 15 to 30 days to comply before penalties attach.
Taxes on the Interest Portion
This is the part that blindsides people. Even if the underlying judgment is tax-free, like a personal physical injury award, the interest component is always taxable. The IRS treats both pre-judgment and post-judgment interest as ordinary income, regardless of the nature of the claim that generated the judgment.3Internal Revenue Service. Publication 525, Taxable and Nontaxable Income
Win a $300,000 personal injury verdict plus $45,000 in pre-judgment interest, and the $300,000 may be excluded from income under the physical injury exclusion, but the $45,000 is fully taxable at your ordinary income rate. On a large judgment, the interest portion alone can push you into a higher tax bracket for the year.
The paying party may be required to report the interest to the IRS on Form 1099-INT.4Internal Revenue Service. About Form 1099-INT, Interest Income Whether or not you receive one, you’re responsible for reporting the interest on your return. Talk to a tax professional before the judgment is paid; in some cases it’s possible to negotiate the allocation of a settlement between principal and interest.
Judgment Expiration and Renewal
A money judgment doesn’t last forever. Every state sets an expiration period, after which the judgment becomes unenforceable if the creditor hasn’t collected or renewed it. These periods generally range from 10 to 20 years, with many states using 10 years as the initial window.
When a judgment nears expiration, the creditor can typically file an application for renewal with the court that entered the original judgment. Renewal extends the enforceability period, and the renewed judgment usually rolls all accrued interest into the new balance. In many states, a judgment can be renewed more than once, effectively allowing the debt to persist as long as the creditor stays on top of the paperwork.
Interest continues to accrue on a valid judgment for its entire enforceable life, even if the creditor hasn’t actively pursued collection. But if the judgment expires before the creditor renews it, both the principal and all accumulated interest become unenforceable. For creditors holding large judgments against defendants who can’t currently pay, a calendar reminder for the renewal deadline is one of the most important steps in the process. Miss it and you lose everything.