Depreciation May Not Be the Return Booster You Think It Is

If you own investment real estate, you've probably heard depreciation described as one of the great perks of the asset class — a "phantom" deduction that shelters income without costing you a dime out of pocket. That's true, as far as it goes. But depreciation isn't free. It's a loan from the IRS, and eventually the bill comes due.

Most investors understand depreciation as a line item that lowers taxable income each year. Far fewer understand how it's calculated, how it needs to be tracked over a holding period that can stretch across decades, or what happens when the property is finally sold. That gap in understanding is where a lot of real estate investors get an unpleasant surprise.

It starts with the basis

Every depreciation schedule begins with an allocation between land and building. Land isn't depreciable; the building is. How that split gets made matters more than most investors realize. An allocation based on a stale rule of thumb, rather than the property tax assessor's ratio or a real appraisal, can either understate or overstate the depreciable basis — and either way, it's a number that gets baked into every return going forward.

Investors who bought into more active strategies, like short-term rentals or value-add multifamily, often miss the opportunity to segregate costs into shorter recovery periods. Instead of depreciating the whole building over 27.5 years, certain components — flooring, appliances, land improvements — may qualify for 5, 7, or 15-year treatment, some of it eligible for bonus depreciation in the year placed in service. Skipping this step doesn't create an error exactly, but it does leave meaningful tax benefit on the table.

The rule that catches people off guard

Here's the part that tends to be the most consequential misunderstanding: the IRS doesn't care whether you actually claimed depreciation. It reduces your basis for depreciation that was allowable, whether you took it or not.

This means an investor who never claimed depreciation — because a preparer missed it, a return was self-filed without full knowledge of the rules, or the property was inherited without a full accounting of its history — still loses that basis when the property sells.

There is a fix (a change in accounting method filed with the IRS), but it only works if someone catches the problem before the sale, not after. This is one of the clearest cases where "I didn't take the deduction" doesn't mean "I didn't pay for it."

Small assumptions, compounding errors

A few other mechanical details tend to trip up investors who build their own models or work from templates that weren't designed for real estate:

• Mid-month convention. Real estate depreciation assumes the property was placed in service mid-month, regardless of the actual closing date. Spreadsheets that assume a full month or a full year of depreciation in year one will be wrong, and that error carries through the entire schedule.

• Repairs versus capital improvements. Expenses that should have been capitalized and depreciated, but were instead expensed in the year incurred (or vice versa), create discrepancies that are hard to unwind — especially for owners who have held a property for many years and whose expense records have become commingled over time.

• 1031 exchange basis carryover. When a property has moved through one or more 1031 exchanges, the replacement property's basis isn't a fresh start. It carries forward the exchanged basis, adjusted for any additional investment. Depreciation schedules that treat the replacement property as a new purchase misstate both the ongoing deduction and the eventual recapture calculation.

  
  

Where it all comes due

Every year of depreciation taken (or allowable) reduces basis, and a lower basis means a larger gain at sale. Some of that gain — up to the amount of depreciation taken — is taxed as unrecaptured Section 1250 gain, at a rate that can run as high as 25%. It doesn't receive the same treatment as the appreciation portion of the gain.

This is where the mismatch tends to show up most starkly: a property that has been fully depreciated and held at a very low basis can show an excellent return on paper right up until the sale, at which point the recapture tax bill changes the picture considerably.

Investors who don't model this in advance — who don't know whether a 1031 exchange, an installment sale, or another deferral strategy might apply — often find out too late that there was a better way to structure the exit.

The bottom line

Depreciation is a real and valuable benefit of owning investment real estate. But treating it as a set-it-and-forget-it deduction, rather than a liability that needs to be tracked and eventually reconciled, is where investors run into trouble. The years of deductions and the day of reckoning at sale are part of the same calculation — not two separate events.

If you own investment real estate and aren't sure how your depreciation has been tracked, or what your basis actually looks like today, that's worth a conversation before you're staring at a closing statement with no time left to plan around it.