Rental activity is passive by default, and passive losses only offset passive income until a specific test is met.
An investor sees a paper loss on a rental — after depreciation, the property shows negative taxable income — and assumes it reduces their salary or business income. Often it does not.
Rental real estate is treated as a passive activity by default, and losses from passive activities generally offset only passive income. Anything left over is suspended and carries forward, usable in a later year or when the property is sold in a fully taxable disposition.
There are two main doors out. One is a limited allowance for taxpayers who actively participate in the rental — meaning they make management decisions such as approving tenants and authorising repairs — which phases out as income rises and disappears entirely above a threshold. The other is qualifying as a real estate professional, which requires meeting both an hours test and a majority-of-working-time test, and then materially participating in the rental activity.
Short-term rentals sit in their own corner: where average guest stays are short enough, the activity may not be treated as a rental at all for these purposes, which changes the analysis substantially.
Why this matters before buying rather than after: a cost segregation study, a big repair, or a deliberately leveraged purchase all generate deductions whose value depends entirely on whether the taxpayer can currently use them. A deduction you cannot use this year is not worthless — it is deferred — but it should not be counted as this year's return.
Bring the income picture to the CPA before the strategy, not after the closing.
This article is general information, not legal, tax or financial advice. Rules change and every deal is different — check your own case with a licensed professional.
Alberto Zaltzberg — Adonait · adonait.com