Converting a primary residence to Airbnb — tax implications you need to know

Category: Getting Started

By: Daniel Kowalski

Posted: 2026-01-09T07:43:22.118Z

We're moving to a bigger house and want to convert our current home into a full-time Airbnb instead of selling it. The house has appreciated ~$180K since we bought it. What are the tax implications of converting from primary residence to investment/rental property? I've heard something about losing the capital gains exclusion? And what about the depreciation recapture? Want to understand the financial picture before we commit.

Reply by Chris Nakamura:

CPA here — this is a really common scenario and the tax implications are significant. Pay attention: **Capital gains exclusion (Section 121):** - When you sell a PRIMARY RESIDENCE, you exclude up to $250K ($500K married) of capital gains from taxes - This requires living there 2 of the last 5 years - Once you convert to rental/STR, the clock starts ticking - **You have 3 years from moving out to sell and still claim the exclusion** (as long as you lived there 2 of the 5 years before sale) - After 3 years: you lose the exclusion entirely on the portion of gains attributable to the rental period - Your $180K gain: if you sell within 3 years while you still qualify, it's TAX FREE (under $250K threshold) **Depreciation:** - Once it becomes a rental, you MUST start depreciating it (even if you don't want to) - IRS requires it, and they'll tax you on "depreciation recapture" even if you never claimed it - Residential rental depreciation: cost basis / 27.5 years - Example: $350K home, $70K land value → $280K building basis / 27.5 = **$10,182/year in depreciation deductions** - This is a HUGE tax benefit while you're operating it as STR **Depreciation recapture when you sell:** - When you eventually sell, ALL accumulated depreciation is recaptured at 25% tax rate - Example: 5 years × $10,182 = $50,909 in depreciation → $12,727 in recapture tax at sale - This is SEPARATE from capital gains tax on the appreciation **Strategy to minimize tax impact:** 1. **Option A: Sell within 3 years** — claim the full $250K/$500K exclusion, minimal depreciation recapture 2. **Option B: Hold long-term** — enjoy annual depreciation deductions, accept recapture at sale (often offset by other strategies) 3. **Option C: 1031 Exchange** — sell and defer ALL gains by purchasing a replacement investment property **My recommendation:** If your plan is to eventually sell, sell within the 3-year window to keep the exclusion. If you plan to hold long-term (7+ years), the annual depreciation deductions are extremely valuable and the recapture is manageable. Definitely consult a CPA for your specific numbers. This is too important to get wrong.

Reply by Camille Dubois:

Adding a practical consideration: **your basis changes when you convert to rental.** The tax basis for depreciation purposes is the LESSER of: - Your original cost basis (purchase price + improvements) - Fair market value at conversion date So if you bought for $250K and it's now worth $430K, your depreciation basis is $250K (not $430K). You can't depreciate the appreciation. BUT — if your home somehow DECREASED in value (rare but possible in certain markets), you'd use the lower FMV as your basis. Get an appraisal on the date you convert. You need that documented FMV for depreciation calculations and future sale tax planning. Also, consider a **cost segregation study** (mentioned elsewhere in this forum) when converting to rental. It accelerates depreciation dramatically, generating larger tax deductions in the early years. For a $350K property, a cost seg study might generate $50-80K in first-year deductions.