What is the 14-day rule for Airbnb hosts renting part of their home?

Under IRC §280A(g), if you rent your personal residence (or a portion of it) for fewer than 15 days per year, the rental income is completely tax-free and does not need to be reported. However, you also cannot deduct any rental expenses. This 'master bedroom rule' or '14-day exclusion' applies only when total rental days are 14 or fewer in the calendar year.

How do I allocate shared expenses between personal and rental use?

There are two common allocation methods. The room method: divide the number of rooms rented by total rooms in the home. The time method: divide rental days by total days in the year. For shared expenses like mortgage interest, utilities, and homeowner's insurance, only the rental-allocated percentage is deductible on Schedule C or E. Expenses used exclusively for the rental (like supplies for a guest room) are 100% deductible.

Can I deduct mortgage interest on the portion I rent on Airbnb?

Yes, but only the rental-allocated portion. If you rent one room in a 4-room home, you can deduct 25% of your mortgage interest as a rental expense. The other 75% remains a personal itemized deduction on Schedule A (subject to normal limits). You cannot deduct the same dollar of mortgage interest twice.

Do I use Schedule C or Schedule E when renting part of my home?

If you provide hotel-like services (daily cleaning, linen changes, concierge assistance), you report on Schedule C as a business. If you simply rent the space without substantial services, you use Schedule E. Most basic Airbnb hosts renting a room in their home use Schedule E. See our guide on Schedule C vs. Schedule E for Airbnb for a full breakdown.

April 6, 2026 · 9 min read

Tax Implications of Renting Part of Your Home on Airbnb

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Renting part of your primary residence on Airbnb — a spare bedroom, a basement unit, or a backyard cottage — is taxable income that must be reported, and the tax rules under IRC §280A require you to allocate shared household expenses between your personal use and your rental use. The good news: a significant portion of your mortgage interest, utilities, and depreciation become deductible business expenses once you start renting.

First: The 14-Day Exclusion (Free Money for Occasional Hosts)

Under IRC §280A(g), if you rent your home (or a portion of it) for fewer than 15 days per year, you don’t have to report the income at all. It’s completely tax-free. No Schedule C. No Schedule E. Just free money.

The catch: you can’t deduct any rental expenses either. And once you cross the 15-day threshold, the exemption disappears — you report all rental income and can deduct allocated expenses for the entire year.

14-Day Strategy

If you rent a spare room during a major local event (Super Bowl, a big conference, a festival) for 10–14 days at premium rates, that income can be entirely tax-free. A host renting during a 10-day festival at $500/night earns $5,000 completely tax-free under this rule. After day 14, every dollar is taxable.

Expense Allocation: Two Methods

When you rent part of your home for more than 14 days per year, shared expenses must be allocated between personal and rental use. You can use either of two methods:

Method 1: Room-Based Allocation

Divide the number of rooms used for rental by the total rooms in the home. If you rent one bedroom in a 5-room home, your rental allocation is 20%. Apply this percentage to shared expenses (mortgage interest, utilities, homeowner’s insurance, property taxes, depreciation).

Method 2: Time-Based Allocation

Divide the number of days the rental space was occupied by paying guests by the total days in the year (365). If rented 120 days out of 365, rental allocation is 33%. This method often produces a higher allocation for heavily-booked hosts.

Which Method to Choose

Use whichever method produces the largest rental expense deduction for your situation. The IRS accepts both. Room-based allocation is simpler and better for hosts who rent year-round but only a small part of the home. Time-based allocation benefits hosts who rent frequently (high occupancy rate) even if the rented area is relatively small.

What Expenses Are Deductible (and How)

Expense Type	Deductible Portion	Allocation Required?
Supplies for the rental room	100%	No — direct rental cost
Cleaning the rental space	100%	No — direct rental cost
Mortgage interest	Rental % only	Yes
Property taxes	Rental % only	Yes
Homeowner’s insurance	Rental % only	Yes
Utilities (electric, gas, water)	Rental % only	Yes
Internet (if also personal use)	Rental % only	Yes
Depreciation on home	Rental % only	Yes
Platform fees (Airbnb service fees)	100%	No — direct rental cost

Depreciation on Your Primary Home

Yes — you can depreciate the rental portion of your primary home. The depreciable basis is the lesser of (1) your original cost plus improvements or (2) fair market value at the time you began renting, multiplied by your rental allocation percentage.

Depreciate over 27.5 years (residential rental) for the structural portion. Furnishings in the rental space can be depreciated over 5–7 years or expensed via Section 179 or bonus depreciation.

Depreciation Recapture Risk

When you sell your home, depreciation you claimed on the rental portion may be subject to recapture at 25%. More importantly, it can affect your ability to exclude gain under the home sale exclusion (IRC §121). The rental-use percentage of gain may not qualify for exclusion. Consult a CPA before selling a home where you rented a portion.

Schedule C vs. Schedule E for Partial Home Rentals

Most hosts renting a room or unit in their primary home use Schedule E because they aren’t providing substantial hotel-like services. If you provide daily cleaning, fresh linens, meals, or other significant services, Schedule C may apply. For a full breakdown, see Schedule C vs. Schedule E for Airbnb hosts.

Local Regulations and Occupancy Taxes

Many cities require a short-term rental permit for home-sharing, even for occasional rentals. In most markets, Airbnb automatically collects and remits local occupancy taxes on your behalf — but you should confirm this for your specific jurisdiction. Failure to obtain required permits can result in fines that are not tax deductible.

Allocation Calculations Made Easy

DeductFlow tracks your rental income, applies your allocation method to shared expenses, and generates a clean Schedule E or Schedule C summary for your CPA. Stop doing the math on a spreadsheet.

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Disclaimer

This article is for informational purposes and does not constitute tax, legal, or financial advice. Tax rules vary based on your specific situation, filing status, entity structure, and jurisdiction. Always consult a qualified CPA or tax professional for guidance on your specific tax situation. IRS rules and thresholds are subject to change — verify current requirements at irs.gov before filing.