Retainage · Idaho

Idaho retainage law: 5% cap, 30-day release on public works (2026)

By Oussama Chicha, EditorUpdated Checked against primary sources · not yet reviewed by a licensed professionalFact-checked
Quick answer

Idaho Code § 54-1926(3) limits retainage on public works where the public body requires a performance or payment bond above 50% of the contract amount: no more than 5% of the total amount payable, from the contractor or a subcontractor. The public body releases retainage on portions accepted as complete within 30 days of acceptance. This page covers public work only; the statute does not address private jobs.

Private work

Idaho · Private workVerified 2026-09-29
Retainage cap
Not in our verified record
Deadline
Not in our verified record
Statute
Not in our verified record

Public work

Idaho · Public workVerified 2026-09-29
Retainage cap
5%
Idaho Code § 54-1926(3): a public body that requires a performance or payment bond above 50% of the contract amount may not withhold more than 5% of the total amount payable as retainage, and the same 5% limit applies to what a contractor withholds from a subcontractor. Public works contracts of $50,000 or more require performance and payment bonds of at least 85% of the contract amount (§ 54-1926(1)-(2)).
Deadline
30 days
Acceptance of the completed portion of the project by the public body and the contractor; a contractor must pay a subcontractor's retainage within 30 days after the subcontract is completed.
What the statute says
Public bodies requiring a performance bond or payment bond in excess of fifty percent (50%) of the total contract amount shall not be authorized to withhold from the contractor or subcontractor any amount exceeding five percent (5%) of the total amount payable as retainage.
Idaho Code § 54-1926(3). · Archived copy of the official text, captured 2026-06-16

Who this applies to

The Idaho rule is part of the public works bonding statute, Idaho Code § 54-1926 [2]. Its retainage limit applies where a public body requires a performance bond or payment bond in excess of 50% [2] of the total contract amount. The same section requires performance and payment bonds of at least 85% [2] of the contract amount on public works contracts of $50,000 [2] or more.

The limit protects two tiers: the contractor, against the public body, and the subcontractor, against the contractor [2].

Private work is not what this statute addresses. This page covers public work only, and on a private job the contract and a lawyer are where the retainage terms get answered.

What the rule says

The ceiling. A public body that requires a bond above the 50% [2] threshold may not withhold from the contractor or subcontractor more than 5% [2] of the total amount payable as retainage. A contractor is held to the same 5% [2] in what it withholds from a subcontractor.

Release in stages. The section does not make the contractor wait for the end of the job. Retainage for any portion of the project that the public body and the contractors accept as complete is released within 30 days [2] after that acceptance. Down the chain, a contractor pays a subcontractor's retainage within 30 days [2] after the subcontract is completed.

Interest. A companion statute, Idaho Code § 67-2302, makes interest run on retained amounts owed by the state or a tax-supported taxing district starting 30 calendar days [1] after the contractor completes the work, unless the contract provides otherwise [1].

How to comply

  1. Confirm whether the contract requires a performance or payment bond above 50% [2] of the contract amount; the 5% [2] ceiling depends on it.
  2. Compare the retainage clause in the prime contract, and in each subcontract, with 5% [2] of the total amount payable.
  3. When a portion of the work is accepted as complete, date the acceptance. The 30-day [2] release period runs from that date, for that portion.
  4. A subcontractor can measure its own 30 days [2] from the completion of its subcontract.
  5. Read the payment terms for any clause on interest; § 67-2302 lets the contract provide otherwise [1].

What this page gives is the rule as the statute states it. Whether it reaches a particular contract is a question for the contract, the sections linked below and a lawyer.

What changed recently

Section 54-1926 was added in 1965, ch. 28, and last amended in 2017, ch. 197, sec. 3 [2].

Related

Retainage laws: other states

Sources

  1. Idaho Code § 67-2302, Idaho State Legislature (archived copy, captured 2026-01-18)
  2. Idaho Code § 54-1926 (performance and payment bonds; retainage on public works), Idaho State Legislature (archived copy, captured 2026-06-16)

Changelog

  1. : Page published.
  2. : 10 more jurisdictions verified and published, 46 of 51 in all.
  3. : Dataset first published with 36 of 51 jurisdictions verified.