Prompt Payment Laws by State: What Late Construction Payment Actually Costs in 2026
✓ Verified against state statutes · Reviewed August 2026 · By Michael Evan — Founder · 50 states · 799 rules
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How We Normalized 50 Different Prompt Payment Statutes
Prompt payment statutes are written in incompatible units. Some state a monthly percentage, some an annual percentage, some a daily percentage with a cap, and some point at a floating benchmark that changes every quarter. Mechanics Lien Management applied four rules consistently across all 50 states to make them comparable. First, public projects only: every figure comes from the state's public-works prompt payment statute, because private-project rules vary far more and are frequently waivable by contract. Second, the sub-tier rate wins: roughly a dozen states set one rate for money owed by the public owner to the prime contractor and a different, usually higher, rate for money owed by the prime down to subcontractors, and because sub-tier claimants carry the most payment risk the analysis reports the rate that applies below the prime. Third, simple annualization: monthly rates are multiplied by 12 and daily rates by 365, without compounding unless the statute expressly requires it, which keeps the comparison conservative. Fourth, floating rates are labeled rather than guessed: where a statute ties the penalty to the prime rate, a federal short-term or midterm rate, or a state treasury rate, the state is marked Floating instead of carrying a point-in-time number that would be stale within a quarter. Two caveats apply throughout. Prompt payment statutes almost always allow the payer to withhold in good faith for disputed, defective, or undocumented work, so the interest clock only runs on amounts properly payable. And many states carve out separate deadlines for state agencies, local governments, and departments of transportation, so each figure is the general rule rather than every variation.
Prompt Payment Interest Rates in All 50 States
Effective annual rates for subcontractor-tier claimants on public projects: Alabama floating (legal rate), Alaska 10.5 percent, Arizona 12 percent, Arkansas 10 percent, California 24 percent, Colorado 15 percent or the contract rate if higher, Connecticut 12 percent, Delaware floating (prime plus 2 percent maximum), Florida 12 percent, Georgia 12 percent, Hawaii 18 percent, Idaho floating, Illinois 24 percent, Indiana 12.7 percent compounded, Iowa floating, Kansas 18 percent, Kentucky 12 percent, Louisiana 0.5 percent per day capped at 15 percent of the payment, Maine floating plus a 1 percent monthly penalty, Maryland 9 percent after 45 days late, Massachusetts floating, Michigan capped at 7 percent, Minnesota 18 percent, Mississippi 0.5 percent per day capped at 15 percent, Missouri 18 percent, Montana 18 percent, Nebraska floating, Nevada 24 percent plus prime, New Hampshire none, New Jersey floating, New Mexico 18 percent, New York floating, North Carolina 12 percent, North Dakota roughly 23 percent, Ohio 18 percent, Oklahoma 18 percent, Oregon up to 30 percent, Pennsylvania floating plus a 1 percent monthly penalty, Rhode Island floating, South Carolina 12 percent, South Dakota 18 percent, Tennessee 18 percent, Texas floating, Utah 15.5 percent, Vermont 12 percent, Virginia 12 percent, Washington 12 percent, West Virginia floating, Wisconsin floating, and Wyoming 18 percent.
The Severe Tier — Where Withholding Gets Expensive
Six states impose penalties that are genuinely punitive rather than merely compensatory, exceeding anything a contractor could plausibly earn on the withheld money. Louisiana and Mississippi charge half a percent per day against a prime contractor who fails to pass a public-project payment down to a subcontractor — roughly 182 percent annualized, by a wide margin the harshest accrual rate in American construction payment law — then cap total interest at 15 percent of the payment due. The practical effect is a fast-hitting, hard-capped penalty: a subcontractor reaches the full 15 percent in about 30 days and accrues nothing after that, making the statute extremely effective at the one-month mark and toothless at the one-year mark. Oregon caps late-payment interest on progress payments at 30 percent a year, more than four times Michigan's ceiling, with final payments dropping to 1.5 percent per month. California, Illinois, and Nevada all charge subcontractor-tier claimants 2 percent per month, or 24 percent a year, and all three deliberately set a lower rate for the public owner's own late payments — 10 percent a year in California, 1 percent per month in Illinois, and a certificate-of-deposit-linked rate in Nevada. Nevada sets the sub-tier rate at 2 percent plus the lowest prime rate among its three largest banks, pushing the real number above 24 percent. The asymmetry is deliberate: these legislatures decided a private prime contractor sitting on money it has already collected from a public body deserves a harsher penalty than a government agency processing paperwork.
The Weak End — Statutes That Barely Register
New Hampshire is the clearest weak case: it has no public-project prompt payment statute at all, setting neither a payment deadline nor an interest rate, so a New Hampshire subcontractor's entire payment timing right comes from whatever the prime contractor drafted into the subcontract. Michigan caps its rate at 7 percent a year, the lowest ceiling among states that have a statute, and starts the owner's clock only after an architect or engineer certifies the pay application — a trigger the contractor does not control. Maryland pays 9 percent, but only once a payment is more than 45 days late, so the first six weeks of delinquency cost the payer nothing. Arkansas and Alaska sit at 10 and 10.5 percent. The larger weak-end story is the floating-rate group: Alabama, Delaware, Idaho, Iowa, Maine, Massachusetts, Nebraska, New Jersey, New York, Pennsylvania, Rhode Island, Texas, West Virginia, and Wisconsin all tie the penalty to a benchmark such as the prime rate, a federal short-term or midterm rate, or a state treasury rate. In a high-rate environment those statutes bite; in a low-rate environment the penalty can fall below the payer's own cost of capital, at which point delaying payment becomes the rational financial choice. Maine and Pennsylvania hedge against this by adding a flat 1 percent per month penalty on top of the floating base. Four states — Nebraska, Washington, West Virginia, and Wyoming — do not set a statutory prime-to-subcontractor deadline at all on public work, leaving the downstream clock entirely to the subcontract.
The Deadlines — 30 Days Up, 7 Days Down
Separate from the penalty, the deadlines themselves show far more national consensus. Roughly twenty states give the public owner 30 days to pay the prime contractor on an approved progress payment, making 30 the clear modal figure. The fast end is 14 days in Arizona and Iowa and 15 days in Arkansas, Georgia, and Massachusetts. The slow end is 60 days in Idaho, Utah, West Virginia, and for Illinois state agencies, meaning an Idaho subcontractor's money can legally sit with the public owner for two full months before a single dollar of interest attaches. Downstream, 7 days is the national norm: Alabama, Arizona, California, Colorado, Iowa, Maine, Montana, New Mexico, New York, North Carolina, South Carolina, Vermont, Virginia, and Wisconsin all require the prime contractor to pass payment down within a week of receiving it, and Kansas uses 7 business days. Ten days is the next most common figure, and Massachusetts is the strictest in the country, requiring progress payments to be passed down immediately. The outliers run long: North Dakota allows the prime contractor 45 days to pay a subcontractor, the same window the public owner gets, which effectively doubles the sub's wait; South Dakota, Tennessee, and Utah allow 30 days; and Rhode Island permits a full 90 days for material suppliers specifically, the longest downstream deadline in the United States.
How Prompt Payment Interest Stacks With Lien and Bond Rights
The most common misunderstanding about prompt payment statutes is that they are an alternative to lien or bond rights. They are not — they are an additional layer, and the layering works differently by project type. On a private project, prompt payment interest and a mechanics lien run in parallel, and most states allow statutory interest to be included in the lien amount, which means every day of delay quietly increases the size of the claim recorded against the property. The lien forces the conversation; the interest makes waiting expensive for the other side. On a public project there is no lien to file, because government property is exempt from private liens. There the prompt payment statute and a payment bond claim under the state's Little Miller Act are the complete set of remedies, and each carries its own notice requirements and deadline entirely separate from the other — missing the bond claim notice does not affect the interest claim, and vice versa. Two related mechanisms interact with all of this. Retainage is money the statute permits to be held back, so it generally does not accrue prompt payment interest until the retainage itself becomes due, which is why retainage release deadlines deserve their own calendar entry. And a lien waiver signed in exchange for a late payment can release accrued interest along with the principal if drafted broadly enough, a routine and expensive giveaway on progress draws. The operational rule The Mechanics Lien Management Method recommends is simple: the day an invoice goes past the statutory deadline, send a short written demand citing the specific prompt payment statute and the interest rate now accruing. It costs nothing, it starts a documented record, and it moves the file to the top of someone's stack. Then calendar the deadlines that expire permanently — the preliminary notice window on private work, the bond claim notice on public work — using The Mechanics Lien Management State System.
Frequently Asked Questions
What is a prompt payment act in construction?
A prompt payment act is a state statute that sets a legal deadline for construction payments and charges interest when that deadline is missed. On public projects the public owner must pay the prime contractor within a set number of days of an approved pay application, and the prime must then pay subcontractors within a shorter window. Interest accrues automatically without proving damages. Forty-nine states have such a statute; New Hampshire does not.
Which state has the highest prompt payment interest rate?
Louisiana and Mississippi impose 0.5 percent per day against a prime contractor withholding a subcontractor's money — roughly 182 percent annualized before a cap of 15 percent of the payment due. Among conventional running rates Oregon is highest at a 30 percent annual ceiling. California, Illinois, Nevada, and Hawaii reach 2 percent per month. Eleven states use 1.5 percent per month, the most common rate in the country.
Which state has the weakest prompt payment law?
New Hampshire is the weakest — the only state with no public-project prompt payment statute, leaving contractors dependent entirely on contract terms. Among states with a statute, Michigan caps interest at 7 percent a year and Maryland pays 9 percent only after a payment is more than 45 days late. Fourteen states tie the penalty to a floating benchmark, so the deterrent shrinks whenever interest rates are low.
How fast does a general contractor have to pay a subcontractor?
On public projects the most common statutory deadline is 7 days after the prime contractor is paid — fourteen states use that figure. Ten days is next most common. Massachusetts requires progress payments to be passed down immediately, while North Dakota allows 45 days and Rhode Island allows 90 days for material suppliers. These are pay-when-paid triggers: the clock starts when the prime is paid, not when the sub invoices.
Can I claim prompt payment interest and file a mechanics lien at the same time?
On a private project yes — they are separate remedies and most states allow the interest to be included in the lien amount. On a public project you cannot file a mechanics lien at all, because government property is not subject to private liens; there the prompt payment statute works alongside a payment bond claim under the state's Little Miller Act or the federal Miller Act, and both run on their own separate deadlines.