Quick AnswerAn Idaho residential lease is governed by Idaho Code Titles 6 and 55. There is no deposit cap, but the deposit must be returned with a written itemized statement within 21 days — or a longer period the lease specifies, but never more than 30 days (§ 6-321). Idaho has no statutory late-fee cap. Ending a month-to-month tenancy takes one month's notice (§ 55-208), and nonpayment takes a 3-day notice to pay or vacate (§ 6-303).
Idaho is a landlord-friendly state with a light statutory framework. This guide walks through every clause, figure, and notice an Idaho landlord should build into a compliant 2026 lease. For the national baseline, see What Every Residential Lease Agreement Must Include.

What clauses are legally required in every Idaho lease agreement?

Every Idaho lease should identify the landlord/agent and all adult tenants, the property, the rent and due date, and the term. Idaho has few mandatory clauses beyond the deposit-return rule (below). A lease for a term longer than one year must be in writing (§ 9-505).

Idaho security deposit rules — the 21-day return

Idaho Code § 6-321 governs deposits:

  • No cap on the deposit amount.
  • Return: within 21 days if the lease fixes no time; if the lease specifies a longer period, the deadline is still capped at 30 days. A written itemized statement of deductions is required with any withholding, and failure to provide it forfeits the right to retain. No deduction for normal wear and tear.

For a multi-state comparison, see security deposit rules every landlord must know.

Late fees and rent rules in Idaho

Idaho does not set a statutory cap on residential late fees and has no mandated grace period. A late fee is enforceable if it is written into the lease and reasonable; courts may void a punitive fee. (Note: the caps in § 55-2304 apply only to self-storage, not residential leases.)

Notice periods to end or not renew an Idaho lease

Idaho notice periods:

SituationNoticeStatute
Terminate month-to-month tenancyOne month (by either party)§ 55-208
Nonpayment of rent3-day notice to pay or vacate§ 6-303

After a judgment, a residential tenant gets 72 hours to remove belongings. Self-help eviction is unlawful.

What disclosures must Idaho landlords provide?

Idaho requires very little at the state level:

  • Lead-based paint (federal): the disclosure and EPA pamphlet for pre-1978 housing.
  • No general state mandate: Idaho has no state-mandated residential-lease disclosure beyond federal lead paint; other disclosures (mold, etc.) are best practice, not statute.

What happens if an Idaho lease is missing required terms?

Specific failures carry specific consequences:

  • Missed 21/30-day return / no itemization: forfeits the right to withhold and exposes the landlord to the deposit and possible damages (§ 6-321).
  • Improper 3-day notice: an eviction can be dismissed if the notice does not comply with § 6-303.

Managing rentals in more than one state? Compare Idaho's rules with our Montana and Washington lease requirement guides.

Full Idaho disclosure checklist

For a dedicated, statute-by-statute rundown of every notice a Idaho landlord must give at signing, see our Idaho required lease disclosures checklist.

A compliant Idaho lease pairs the universal essentials with the state's light rules: no deposit cap but a 21-day (30-day maximum) itemized return, a one-month month-to-month notice, and a 3-day nonpayment notice. LeaseHelper generates an Idaho-specific lease pre-populated with these clauses so nothing required is left out.

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Frequently asked questions

Is there a security deposit limit in Idaho?

No. Idaho sets no cap on the deposit amount, but it must be returned with a written itemized statement within 21 days (or up to a lease-specified period not exceeding 30 days) (Idaho Code § 6-321).

How long does an Idaho landlord have to return a security deposit?

Within 21 days if the lease fixes no time, and never more than 30 days even if the lease specifies a longer period, with a written itemized statement (Idaho Code § 6-321).

Is there a late-fee limit in Idaho?

No. Idaho does not cap residential late fees; the fee must be in the lease and reasonable rather than punitive.

How much notice is required to end a month-to-month tenancy in Idaho?

One month's written notice by either party (Idaho Code § 55-208). Nonpayment of rent requires a separate 3-day notice to pay or vacate (§ 6-303).

What disclosures must an Idaho landlord give?

Only the federal lead-based paint disclosure for pre-1978 housing. Idaho has no additional state-mandated residential-lease disclosure.

Official sources

Primary statutes and official government references for this guide. Statutes change — always confirm against the current official text before you act.

This guide offers general information about Idaho lease agreement requirements and landlord-tenant law and is not legal advice. Statutes change and city or county ordinances can add requirements, so confirm the current rules before you act — and for anything complicated, talk to a licensed Idaho attorney. Last reviewed: July 2, 2026.