A lienholder can charge interest on a lien only when a written contract or a specific statute grants that right, and the rate, start date, and ceiling all depend on the type of lien. Charging interest on a lien is never automatic, and getting the details wrong can shrink the recovery or, in some states, wipe out the lien entirely.
Where the Right To Charge Interest Comes From
A lienholder needs one of two sources of authority. The first is a written agreement between the parties, such as a construction contract or promissory note, that spells out an interest rate on unpaid balances. When that unpaid balance becomes a lien, the contractual rate usually carries over.
The second is a statute. When no contract exists or the contract is silent, state or federal law fills the gap. Statutes for judgment liens, tax liens, and mechanic’s liens handle the question differently. Some let the lienholder include interest in the recorded lien amount from day one. Others limit the lien to principal and allow interest only after the lienholder sues to enforce the lien. That distinction is not a technicality. Rolling interest into a lien amount when the statute doesn’t permit it opens the door to a legal challenge.
Federal Tax Liens
Federal tax liens carry interest under federal law. When a taxpayer owes tax and fails to pay after the IRS issues a demand, a lien attaches automatically to all of the taxpayer’s property, and it covers not just the original tax but also the interest, penalties, and collection costs that accrue.1Office of the Law Revision Counsel. 26 U.S. Code 6321 – Lien for Taxes
Interest runs from the original payment due date until the balance is paid in full.2Office of the Law Revision Counsel. 26 USC 6601 – Interest on Underpayment, Nonpayment, or Extensions of Time for Payment, of Tax The rate is the federal short-term rate plus three percentage points, adjusted every quarter. For the first quarter of 2026, the rate is 7 percent per year, compounded daily.3Internal Revenue Service. Interest Rates Remain the Same for the First Quarter of 2026 Starting in the second quarter of 2026, it drops to 6 percent.4Internal Revenue Service. Internal Revenue Bulletin 2026-8
Interest isn’t the only charge that piles onto a tax lien. The IRS also imposes a failure-to-pay penalty of 0.5 percent of the unpaid tax for each month the balance remains outstanding, capped at 25 percent. That rate jumps to 1 percent per month if the tax stays unpaid 10 days after the IRS issues a notice of intent to levy. Taxpayers on an installment agreement pay a reduced 0.25 percent per month.5Internal Revenue Service. Topic No. 653, IRS Notices and Bills, Penalties and Interest Charges Interest and penalty run together, so a federal tax lien can grow quickly.
Judgment Liens
When a plaintiff wins a money judgment and records it as a lien, interest generally starts running on the date the court enters the judgment.
Federal Court Judgments
For judgments entered in federal court, one statute controls. The rate equals the weekly average one-year constant maturity Treasury yield published by the Federal Reserve for the week before the judgment date.6Office of the Law Revision Counsel. 28 USC 1961 – Interest The rate locks in at the judgment date and stays fixed. Interest compounds annually and runs until the judgment is paid.
State Court Judgments
State courts follow their own statutory rates, and the variation is wide. Some states set a fixed percentage. Others tie the rate to a benchmark like the federal prime rate or a Treasury yield. Statutory post-judgment interest rates generally fall between 2 and 9 percent, though the exact figure depends on the state and sometimes on the type of debt underlying the judgment. A few states distinguish contract-based judgments, where the contractual rate may keep applying, from tort judgments, where the statutory rate takes over.
Mechanic’s Liens
Mechanic’s liens protect contractors, subcontractors, and material suppliers who go unpaid for work on a property. Whether interest can be charged depends heavily on the state and on whether the underlying contract addresses it.
If the construction contract specifies an interest rate for late payments, that rate typically governs the lien amount. Without a contractual rate, the lienholder must rely on the state’s mechanic’s lien statute. Some states allow interest to be included in the lien claim from the date it’s recorded. Others take a narrower approach: the lien covers only the principal owed for labor and materials, and interest is recoverable only if the lienholder files a foreclosure lawsuit. Statutory rates for mechanic’s liens vary widely, roughly from 7 to 18 percent depending on the state.
The starting point for accrual also varies. Depending on state law, the clock may start on the date payment was originally due under the contract, the date the last work was performed, or the date the lien was recorded with the county. Contractors who pick the most favorable date instead of checking the statute risk overstating the lien.
HOA and Assessment Liens
Homeowners association liens arise when an owner falls behind on dues or special assessments. Authority to charge interest and late fees almost always comes from the association’s governing documents, typically the CC&Rs or bylaws, combined with state statute. Most states that regulate HOAs cap the interest rate and the size of late charges. If the governing documents specify a lower rate, that lower number applies.
Because the numbers come from the association’s own rules, an owner facing an HOA lien should request a detailed accounting that separates the original assessment from accrued interest, late fees, and collection costs. Those add-ons can be substantial and may be negotiable, particularly if the association’s collection procedures didn’t follow the steps required by the governing documents or state law.
Usury Caps and the Cost of Overcharging
Every state has usury laws limiting the interest a creditor can charge, though the specifics vary. There is no single federal usury limit for consumer debts. Some states set a fixed ceiling for most obligations. Others tie the cap to a benchmark rate plus a set number of points. Banks and credit unions are often exempt from state usury limits under federal preemption. For most lienholders, the practical question is whether the state’s general usury cap or a more specific lien statute sets the ceiling.
Overcharging carries real consequences, especially for mechanic’s liens. Courts in many states treat an inflated lien amount as an “excessive lien.” Penalties differ: some states reduce the lien to the correct amount, others invalidate the entire lien, including the portion legitimately owed. In the harshest jurisdictions, filing an exaggerated mechanic’s lien can also make the lienholder liable for the property owner’s attorney’s fees and costs. A safer approach is to limit the recorded lien to the principal owed and pursue interest separately through a foreclosure suit where the statute allows it.
What Interest Means at Payoff
When a property owner needs to clear a lien during a sale or refinance, the payoff is not the original debt. It is the principal plus all interest accrued to a specific date, calculated by the lienholder and provided in a formal payoff statement. For federal tax liens, the taxpayer can request the figure from the IRS Centralized Lien Operation or through an online account.7Internal Revenue Service. Publication 1450 – Instructions for Requesting a Certificate of Release of Federal Tax Lien Because interest keeps running until the balance is paid, the payoff amount quoted today will not match the amount owed a week from now.