Real Estate Tax Strategy Calculator 2026 — Depreciation, Cost Seg & 1031

Rentals, Flips & Investors

Real Estate Tax Strategy Tool

Real estate is the most tax-favored investment in America — if you use the rules. See your rental's depreciation "tax shield," what a cost segregation study unlocks, and what you'd owe (or defer) when you sell.

Filing status

Household income before this property ($/yr)

Property purchase price ($)

Land portion (%)

Property type

Annual rent collected ($)

Annual expenses — mortgage interest, taxes, insurance, repairs, mgmt ($)

Add cost segregation study? (25% of building at 100% bonus)

Planning to sell? Expected sale price ($)

Years you'll have owned it

Lived in it 2 of the last 5 years?

When you sell — three exits, three very different tax bills

Strategies your preparer should be talking to you about

Cost segregation + 100% bonus depreciation

A cost seg study splits your building into 5-, 7-, and 15-year components (appliances, flooring, fencing, paving) — typically 20–30% of the price — and the OBBBA made 100% first-year bonus depreciation permanent for property placed in service after Jan 19, 2025. On larger properties this can wipe out years of rental income tax at once.

The short-term rental "loophole"

Average guest stays of 7 days or less (think Airbnb) + material participation = the losses are not passive — they can offset your W-2 or business income without the $25,000 cap or real-estate-professional status. Paired with cost seg, this is the most powerful play for high earners.

Real estate professional status

750+ hours/year and more than half your working time in real estate removes the passive-loss limits entirely — unlimited rental losses against any income. Works best when one spouse qualifies while the other earns the W-2.

1031 exchange discipline

Defer the entire gain — including depreciation recapture — by rolling into a like-kind property. The deadlines are unforgiving: 45 days to identify the replacement, 180 days to close, and a qualified intermediary must hold the money. Heirs can eventually receive a stepped-up basis, erasing the deferred tax entirely.

Build My Real Estate Tax Plan

Educational estimate — 2026 federal law: straight-line depreciation (27.5/39-yr), $25,000 active-participation passive loss allowance phasing out between $100k–$150k AGI, unrecaptured §1250 gain at up to 25%, long-term gains stacked at 0/15/20%, 3.8% NIIT, §121 exclusion $250k/$500k (recapture not excludable). Cost seg modeled as 25% of building at 100% bonus. Not covered: mid-year conventions, state tax, dealer status, non-qualified use periods, partial dispositions. Real estate elections are permanent decisions — get the strategy session before you buy, sell, or elect.