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Kenai Peninsula Borough, AK Short-Term Rentals: Taxes & Fees (2026)

Some Restrictions
Compiled from the official code textEditor Martyn O'NeillLast verified September 2026

Key Facts

Taxable trigger
"Temporary lodging": stays under one month
Unit definition
Room/unit rented at a flat rate, any occupancy
Registration
Certificate required before first booking, § 5.18.300
Tax rate
Up to 3 percent general sales tax
Filing frequency
Quarterly returns, § 5.18.500
Failure-to-register penalty
Civil penalty up to $1,000

Summary

A short-term rental in the unincorporated Kenai Peninsula Borough is taxed as "temporary lodging": any stay booked for less than one month. The host is a "seller" under the borough sales tax code, must register with the borough, and collects tax on each rented unit.

These county ordinances apply to unincorporated areas of Kenai Peninsula Borough. Incorporated cities within the county may have their own rules that take precedence over county-level regulations.

"Temporary lodging" is defined as a service to provide any lodging of less than one month. ... "Unit" means a room or single unit that is customarily advertised and rented at a flat rate regardless of the number of occupants. ... All sellers shall file with the borough an application for a certificate of registration, on a form provided by the borough, prior to commencing business, or the opening of an additional place of business.

Full Breakdown

The borough's sales tax chapter defines the terms that pull a short-term rental into its tax net. Kenai Peninsula Borough Code § 5.18.900 defines "temporary lodging" as a service to provide any lodging of less than one month, and defines "unit" as a room or single unit that is customarily advertised and rented at a flat rate regardless of the number of occupants, so a whole cabin, guest room or accessory dwelling booked nightly counts as a unit even if several people stay in it.

Because an STR host is furnishing lodging for compensation, the host is a "seller" under § 5.18.397 [sic, § 5.18.900] and must file for a borough certificate of registration under § 5.18.300 before accepting a booking, opening the platform listing, or adding a second unit, and must post that certificate at the rental. Registered hosts collect the borough's general sales tax (up to 3 percent under § 5.18.100) on each night's rent, with each unit's nightly rental computed as its own transaction rather than capped once per booking.

Hosts must file quarterly sales tax returns under § 5.18.500 unless the borough approves a different schedule, and a stay that runs a full month or longer for the same tenant falls outside "temporary lodging" and is instead treated as a real property rental subject to the ordinary $500-per-month rental cap. Fees for late filings, audit estimates and reinstatement to the active seller roll are set in the borough's Schedule of Rates, Charges and Fees under § 5.18.670.

Violations & Fines

An STR host who fails to register is subject to a civil penalty up to $1,000 under § 5.18.610, on top of any unpaid tax, interest, costs and attorney fees the borough recovers. A host who fails to file a return or remit collected tax owes a civil penalty of 5 percent per month up to 10 percent, plus 10 percent annual interest, under § 5.18.620(B), and two consecutive missed filings result in removal from the active roll, requiring a reinstatement fee to resume renting.

Frequently Asked Questions

Does a short-term rental count as "temporary lodging" under borough tax law?
Yes. Section 5.18.900 defines temporary lodging as any lodging of less than one month, which covers nightly or weekly stays booked through a platform or directly, so those bookings are taxed the same as a hotel room.
Do I need to register my rental with the borough before listing it?
Yes. Section 5.18.300 requires every seller, including an STR host, to obtain a certificate of registration from the borough before commencing business or opening an additional unit, and to display it at the rental.
What if my guest stays a full month or longer?
A stay of one month or more falls outside the "temporary lodging" definition in § 5.18.900 and is instead treated as an ordinary real property rental, subject to the general $500-per-month rental cap in § 5.18.430(B) rather than the nightly-per-unit rule.
How often must an STR host file sales tax returns?
Quarterly, under § 5.18.500, unless the borough places the host on a different schedule, such as monthly for the first six months after registering or after a delinquency under § 5.18.500(B).

Sources & Official References

Other rules in Kenai Peninsula Borough

All Kenai Peninsula Borough rules

How Kenai Peninsula Borough compares: Cities with the Highest Short-Term Rental Taxes·Compare Kenai Peninsula Borough to another location·View the Alaska short-term rentals overview

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