Prompt payment

Maine prompt payment act and retainage rules

One Maine statute, 10 M.R.S. chapter 201-A, covers both private owners and the State and its towns and school districts. Absent other terms, owners pay 20 days after the billing period or invoice, subs get paid 7 days after the tier above is paid, and retainage comes due 30 days after final acceptance.

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Review invoices, committed costs, and cash timing together before making project decisions. AI-generated illustration.

Maine's prompt payment act for construction sits in Title 10, chapter 201-A, sections 1111 through 1120. Unlike many states, it does not split public and private work into separate laws. The definition of owner in section 1111 expressly includes the State and its instrumentalities and subdivisions, such as municipalities and school districts. If the contract is silent, the owner pays 20 days after the end of the billing period or 20 days after delivery of the invoice, whichever is later. A contractor or sub then has 7 days to pass the money down. Retainage has no percentage cap in the statute, but it must be paid within 30 days after final acceptance of the work.

Maine construction payment rules at a glance (10 M.R.S. ch. 201-A)
RuleWhat the statute saysSection
Who is coveredPrivate owners and the State, municipalities, school districts and other subdivisions§ 1111
Owner pays primePer the contract; if silent, 20 days after the billing period ends or the invoice is delivered, whichever is later§ 1113(1), (3)
Interest on late owner paymentFrom day 21, at the rate in 14 M.R.S. § 1602-C, unless otherwise agreed§ 1113(4)
Prime or sub pays its subs and suppliers7 days after receiving payment or the sub's invoice, whichever is later, regardless of contrary terms§ 1114(3)
Retainage capNo percentage set§ 1116
Retainage releaseWithin 30 days after final acceptance; passed down within 7 days of receipt§ 1116(1), (3)
Penalty if a court or arbitrator finds wrongful withholding1% per month on sums wrongfully withheld, plus attorney fees to the substantially prevailing party§ 1118(2), (4)

When the owner must pay

Section 1113 starts with the contract. If the contract sets payment terms, the owner follows them. If it does not, the contractor may bill progress payments at the end of each billing period and send a final invoice when the work is done. Section 1111 defines the billing period as whatever the parties agreed to or, failing that, the calendar month the work was performed. Mail counts as delivered three days after it is properly sent.

Unless the parties agree otherwise, interest starts on the 21st day on the unpaid balance of a late progress or final payment. The rate comes from 14 M.R.S. § 1602-C, which uses the one-year U.S. Treasury bill rate plus 6 percent. The Treasury figure is set by the average for the last full week of the prior calendar year, so the actual rate moves from year to year. Check the Maine Judicial Branch or the statute for the current figure rather than assuming last year's number.

Paying subs and suppliers: the 7-day rule

Section 1114 gives subs more protection than most states. Before a sub or supplier signs, the contractor must disclose the date the owner's payment is due. If that disclosed date turns out to be wrong, the contractor must pay as if the 20-day defaults applied. Once a sub has performed, payment is due 7 days after the later of receiving the owner's (or upper tier's) payment or receiving the sub's invoice, for the full or proportional amount received for that work. These rules apply notwithstanding any contrary agreement, so a subcontract cannot stretch them out. Late payment carries interest from the day after it was due, at the same § 1602-C rate.

Example: a GC on a $480,000 municipal garage receives the town's March payment on April 18. The framing sub's invoice arrived April 5. Payment to the framer is due 7 days after April 18, so April 25. If the framer invoices late, on April 22, the clock instead runs to April 29.

Retainage and disputes

  • No cap: section 1116 does not limit the percentage, so the contract rate governs.
  • Release to the prime: retained amounts due on completion must be paid within 30 days after final acceptance.
  • Release to subs: a contractor must pay subs and suppliers within 7 days after receiving retainage, and each sub passes it down the same way.
  • Withholding from subs: if the owner is not holding retainage on a sub's work, the contractor may still withhold it under the subcontract, but it is due within 30 days of final acceptance.
  • Unreasonable delay: an owner, contractor, or sub who unreasonably withholds acceptance or fails to pay retainage is exposed to the chapter's interest, penalty, and fee provisions (§ 1116(4)).

Section 1118 lets any party withhold an amount that reasonably relates to a good faith claim, such as defective work, unsatisfactory progress, disputed work, or third-party claims. Withholding beyond that is risky: an arbitrator or court that finds a party broke the payment terms must award 1 percent per month on sums wrongfully withheld, and the substantially prevailing party gets reasonable attorney fees, no matter what the contract says. The statute does not speak to pay-if-paid clauses by name, but the 7-day rule and the disclosure duty in section 1114 apply despite contrary agreements.

Smart Business Automator tracks owner receipts, sub invoices, and retainage by job, so the 7-day and 30-day dates show up before they pass. See construction accounts receivable automation.

Frequently asked questions

Does Maine's prompt payment law apply to public projects?

Yes. The definition of owner in 10 M.R.S. § 1111 includes the State and its instrumentalities and subdivisions, including municipalities and school districts.

How many days does a Maine contractor have to pay a subcontractor?

Seven days after the later of receiving payment for the sub's work or receiving the sub's invoice, under 10 M.R.S. § 1114(3). The rule applies notwithstanding a contrary agreement.

Is there a retainage cap in Maine?

The statute sets no percentage. It requires retainage to be paid within 30 days after final acceptance and passed down to subs within 7 days of receipt.

What is the penalty for withholding payment wrongfully in Maine?

If arbitration or litigation finds a party failed to follow the payment terms, 10 M.R.S. § 1118 requires an award of 1 percent per month on sums wrongfully withheld, plus reasonable attorney fees to the substantially prevailing party.

Sources

  1. Maine Legislature: 10 M.R.S. § 1111, Definitions
  2. Maine Legislature: 10 M.R.S. § 1113, Owner's payment obligations
  3. Maine Legislature: 10 M.R.S. § 1114, Payment obligations
  4. Maine Legislature: 10 M.R.S. § 1116, Retainage
  5. Maine Legislature: 10 M.R.S. § 1118, Disputes; penalties; attorney's fees
  6. Maine Legislature: 14 M.R.S. § 1602-C, interest rate

Laws and rates change. Confirm current requirements with the state agency before you bid, file, or pay. This page is general information, not legal advice.

Written and edited by

Maurice Francois writes and edits construction operations guides for Smart Business Automator. More from Maurice on the Scaling Legends podcast.

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