Idaho late rent fee: the legal maximum
Idaho has no fixed cap, but a late fee must be a reasonable estimate of the landlord’s actual cost of late payment; courts strike down fees that work as penalties. There is no statutory grace period, so the lease controls when the fee starts.
Reference: 5% of rent at common rents
Idaho has no cap. Five percent of monthly rent is the most common lease figure and the statutory cap in several other states; it is shown for comparison only.
| Monthly rent | 5% reference |
|---|---|
| $1,000.00 | $50.00 |
| $1,500.00 | $75.00 |
| $2,000.00 | $100.00 |
| $3,000.00 | $150.00 |
What the statute says
No dollar or percentage cap and no statutory grace period. Any fee imposed on a residential tenant, including a late fee, must be reasonable, may not exceed the amount agreed in the rental agreement, and may not be charged unless it is in the written agreement (or the landlord gives 30 days' written notice of the change; oral agreements excepted). Applies to agreements entered into or renewed on or after July 1, 2023.
How this applies in practice
- A late fee must be written into the lease. The statute constrains what the lease may say; it does not create a fee on its own.
- With no statutory grace period, the lease decides when the fee starts; many leases allow three to five days.
- Courts treat a late fee as liquidated damages: it must approximate the landlord’s real cost of late payment. Fees far above 5% of rent, or that compound daily without limit, are the ones that get struck down.
- Late fees are separate from interest on unpaid rent and from eviction filing costs, which have their own rules.
Related Idaho rules
- Pay-or-quit notice: 3 days. Notice periods in Idaho.
- Security deposit: No statutory limit; returned 21 days after the tenant surrenders the premises if the rental agreement sets no deadline; the agreement may set a longer period, but in every case the refund (with a signed itemized statement for any deductions) is due within 30 days after surrender. Deposit rules in Idaho.
- All rules on one page: Idaho landlord and tenant law.
Frequently asked questions
What is the maximum late fee for rent in Idaho?
There is no statutory maximum in Idaho. No dollar or percentage cap and no statutory grace period. Any fee imposed on a residential tenant, including a late fee, must be reasonable, may not exceed the amount agreed in the rental agreement, and may not be charged unless it is in the written agreement (or the landlord gives 30 days' written notice of the change; oral agreements excepted). Applies to agreements entered into or renewed on or after July 1, 2023. The most common lease figure nationally is 5% of monthly rent, and courts in no-cap states generally accept fees in that range while rejecting ones that look like penalties.
Is there a grace period for rent in Idaho?
Not by statute. The lease may set one; if it is silent, a fee can be charged the day after the due date.
Can a Idaho landlord charge a daily late fee?
Nothing in state law forbids it, but the total must remain reasonable. A daily fee that quickly exceeds a few percent of rent risks being struck down as a penalty.
Can a landlord charge a late fee that is not in the lease in Idaho?
No. A late fee is a contract term. If the lease does not provide for one, the landlord cannot impose it, and in Idaho the statutory reasonableness standard applies on top of whatever the lease says.