Idaho Month-to-Month Lease: One Month's Notice, 30 for Rent Hikes

By Steve Levine · Updated November 3, 2026

Short answer: An Idaho month to month lease is a “tenancy at will,” and either side can end it with written notice of at least one month under Idaho Code § 55-208. Rent increases on residential property need 30 days’ written notice under § 55-304(2), and the clock runs from the date of notice, not from the end of a rental month.

Idaho’s rule is measured in months, not days. The statute says “not less than one (1) month,” and it counts from the date you serve notice to a move-out date you specify. That differs from states that require notice to land before the next rent period begins. In Idaho, a notice delivered on the 12th can set a move-out date of the 12th of the following month.

Idaho Month to Month Lease Rules: Quick Reference

Rule	Idaho	Statute
Landlord ends a tenancy at will	Written notice, at least one month, served under the civil procedure code	§ 55-208(1)
Tenant ends a tenancy at will	Written notice naming a date at least one month away	§ 55-208(2)
Residential rent increase	30 days’ written notice before it takes effect	§ 55-304(2)(b)
Landlord will not renew a residential lease	30 days’ written notice before nonrenewal	§ 55-304(2)(a)
Other term changes on a month-to-month	Written notice at least 15 days before the month ends	§ 55-304(1)
Staying past the term without permission	Unlawful detainer; damages may be trebled	§ 6-303(1), § 6-317
Local rent control	Barred	§ 55-306

How a Tenancy at Will Arises in Idaho

Section 55-208 applies to a tenancy at will “however created.” That phrase matters. Whether you moved in on a handshake, signed a form that never set an end date, or stayed on with the landlord’s blessing after a lease expired, the same one-month termination rule governs.

Idaho’s code does not spell out exactly what kind of tenancy forms when a landlord lets you stay after a fixed term ends, so check your lease for a holdover or renewal clause. Many leases say the tenancy continues month to month at the same rent.

Lease ending? Your landlord owes you 30 days’ warning

Idaho gives fixed-term renters a protection many states do not. Under § 55-304(2)(a), a residential landlord must give written notice of the intention not to renew a lease at least 30 days before the nonrenewal. A lease does not just lapse with no word from the landlord; you should get a month’s written heads-up.

Notice to End a Month-to-Month

When you are the one leaving

Under § 55-208(2), you give your landlord written notice that you will be vacating on a date specified in the notice, and that date must be at least one month from the date of notice. Name an exact date. A vague “I’ll be out next month” invites a dispute over when the tenancy ended.

When the landlord ends it

Under § 55-208(1), the landlord must give you written notice to remove from the premises within a period of not less than one month, specified in the notice, and serve it in the manner the civil procedure code prescribes. Idaho’s statute does not require the landlord to give a reason or set a longer notice for long-term tenants.

The landlord also must wait it out. Section 55-209 says only after the notice period has expired, “but not before,” may the landlord reenter or go to court to recover possession.

Weekly renters

Idaho has no separate week-to-week termination statute in chapter 2 of Title 55. Because § 55-208 covers any tenancy at will however created, a weekly payer appears to be covered by the same one-month written notice. If your agreement sets something different, get advice before relying on a shorter period.

Rent Increases and Other Changes

Section 55-304 has two layers, and it helps to read them in order.

Rent increases: For any residential lease, § 55-304(2)(b) requires written notice of an increase at least 30 days before the increase is intended to take effect. This subsection applies “notwithstanding” the older 15-day rule, so a residential landlord cannot use the shorter window for rent.

Other terms: Section 55-304(1) still lets a landlord change other terms of a month-to-month lease with written notice served at least 15 days before the month ends, effective when the month ends. If you keep living there after that date, the statute says the notice itself becomes part of your lease. In practice, staying means agreeing.

No Idaho law caps how much rent can rise, and cities cannot add one. Section 55-306 bars local governments from enacting or enforcing any ordinance that would regulate rent, fees, or deposits for private residential property.

Holding Over in Idaho

Once a month-to-month tenancy is properly ended, staying put has consequences. Section 6-303(1) defines unlawful detainer to include continuing in possession after the term ends without the landlord’s permission, and it adds that a tenancy at will must first be ended by notice under the civil code. If a landlord then recovers damages for the unlawful detention, § 6-317 allows judgment for three times the actual damages. That is a heavier risk than a double-rent rule.

Worked Example: A Coeur d’Alene Rental

Tyler rents a house in Coeur d’Alene for $1,350 a month, due on the 1st, with no end date in his agreement. On September 20, 2027, his landlord delivers a written notice raising rent to $1,450. Under § 55-304(2)(b), the increase cannot take effect until at least October 20, 2027, 30 days later. The landlord’s notice sets it for the November 1 payment, which complies.

Tyler decides to move instead. On October 3, 2027, he hands the landlord a dated letter saying he will vacate on November 3, 2027, one month from the date of notice, as § 55-208(2) requires. Whether he owes a full November payment or a prorated amount for November 1 through 3 depends on his agreement, because § 55-208 does not address proration. A safer plan would have been a notice on October 1 naming October 31.

Use the notice deadline calculator to map out dates like these.

Frequently Asked Questions

Does Idaho require 30 days or one month to end a month-to-month?

Section 55-208 says “not less than one (1) month,” for both landlords and tenants. A calendar month can be 28 to 31 days, so count to the same date in the next month rather than assuming 30 days.

My landlord told me about a rent increase 20 days ahead. Is that valid?

Not for residential property. Section 55-304(2)(b) requires at least 30 days’ written notice before a rent increase takes effect. The 15-day rule in § 55-304(1) applies only to other changes.

My lease ends in six weeks and I haven’t heard anything. Must my landlord tell me?

If the landlord does not intend to renew, § 55-304(2)(a) requires written notice at least 30 days before the nonrenewal. If you get no notice, ask the landlord in writing what happens at the end of the term.

Can Boise or another city pass rent control?

No. Section 55-306 bars any local ordinance that would regulate rent, fees, or deposits on private residential property.

What if I stay a week past my move-out date?

Staying without permission after the term ends is unlawful detainer under § 6-303(1). Any damages the landlord proves for that period can be tripled under § 6-317.

Your next step: write a dated notice that names your exact move-out date at least one month out, and keep proof of delivery. Compare other states on our month-to-month lease laws by state page, read the Idaho security deposit law guide before move-out, and use our rent increase checker if a new rent notice arrives. This page offers general information, not legal advice; for help with your situation, use LSC’s legal aid finder.

Sources

Owed money from a settlement? Check what is open at OpenClassActions.com. Caring for someone with dementia? Find practical guides at HelpDementia.com. Working out a skin routine? Evidence-based answers at AcneAdvocate.com. Forgot the name of a movie? Identify it at FindThisMovie.com. Was your data exposed? Track active breaches at DataBreachRadar.com.