Buying a Short-Term Rental Before Year-End: What Must Happen Before December 31?

By Steve R. Madsen, CPA · Madsen and Company · September 2026

Quick Answer

To begin rental depreciation this year, it has to be placed in service by December 31, which means ready and available to rent, not just purchased.

Closing on the property is not the trigger, and you do not need a paying guest before year-end. The reason to buy should be the investment itself. If a property makes sense as a rental, the tax treatment is something you plan around a sound purchase, not the purpose of the purchase.

A late-December purchase can qualify for rental depreciation this year if the property is genuinely ready and available for rent. Whether those deductions reduce current tax is a separate question governed by the applicable loss limits. Check both before rushing a closing.

What “placed in service” actually means

Depreciation, and the first-year deductions built on it, begin when the property is placed in service. IRS Publication 527 defines that as the point when the rental is ready and available for rent, not when you close and not when the first guest checks in. In the example the IRS uses, a property that is repaired and advertised in early July is placed in service in July even though the first tenant does not move in until September.

So for a December purchase, the question is not “did the deed record in time.” It is “was the property genuinely ready and available, and can I show that it was.” Listing it, setting a nightly rate, and being able to accept a booking are what count. A house bought on December 20 that is still mid-renovation and cannot be booked is not in service yet, whatever the closing date says.

Land is not depreciable. Allocate the purchase price between land and depreciable property rather than depreciating the entire amount. Your land basis still matters when calculating gain or loss on a later sale.

You do not need a booking before December 31

A guest does not have to book or stay at the property before December 31 for rental depreciation to begin. Once the property is genuinely ready, available, and held out for rent, it can be placed in service even if the first guest arrives in January. But starting depreciation and using a loss against wages are separate questions. If there are no guest stays during the tax year, the seven-day average-stay test cannot be calculated from that year’s actual stays. Do not assume that offering short bookings alone establishes nonpassive treatment for that year.

The deductions that can come off this year

Depreciation and cost segregation timing

Standard depreciation on residential rental property is spread over many years. A cost segregation study can identify components that depreciate faster, and some of those may qualify for bonus depreciation, which can move a meaningful part of the deduction into the first year. Whether that is worth doing depends on the property, your other income, and how long you plan to hold it. We cover the trade-off in Is a Cost Segregation Study Worth It for Your STR? and the current rules in 100% Bonus Depreciation for Real Estate Investors. For a December buyer, the timing point is unavoidable: the property still has to be placed in service this year for rental depreciation to begin this year.

The seven-day rule and material participation

Under the seven-day strategy, nonpassive treatment depends on two separate tests. Other exceptions and loss rules may apply in different circumstances. Most rental losses are passive and cannot offset wages. A short-term rental can be different: when the average period of customer use is seven days or less, the activity is generally not treated as a rental activity for purposes of the Section 469 passive-activity rules (Treas. Reg. §1.469-1T(e)(3)(ii)(A), IRS Publication 925). That exception is only half of it. You still have to materially participate for the loss to be nonpassive, and clearing the seven-day point does not clear material participation. They are two different requirements. A late-year buyer still has to meet a material-participation test for that tax year; the hours are not prorated because the property was acquired in December. One commonly used test requires more than 100 hours of participation and at least as much participation as any other individual, including a cleaner or property manager. Operating work should be documented by task and date. Time spent merely evaluating the purchase or reviewing the investment does not automatically count as participation in the rental’s operations. See Can Short-Term Rental Losses Offset W-2 Income? and our documentation guidance.

The limits that decide whether a first-year loss actually helps

Even if the seven-day rule and material participation both work, a loss can be limited before it ever reaches your other income. The basis and at-risk rules cap a loss to what you genuinely have on the line. The vacation-home rules limit deductions when your personal use of the property is high. The excess business loss limitation can push part of a large loss into a future year as a net operating loss carryforward, distinct from a suspended passive loss (IRS Publication 925). So a first-year loss is not automatically a first-year tax cut. Accelerating deductions can create or enlarge a loss, but whether that loss is usable this year is a separate question that depends on your full picture.

This is the honest reason to buy for the economics. If the property is a sound investment, the tax treatment is a benefit you plan for. If the only reason to buy is a projected write-off, and the limits above defer it, the decision was built on the wrong footing.

A short year-end checklist

Before December 31, the things that actually move the needle are:

• The property is ready and available to rent: repaired, furnished if it will be furnished, listed, and bookable.
• You have discussed whether a cost segregation study makes financial sense and when to complete it. Evaluating it before filing is helpful, but a later study may still be possible and may require additional tax filings.
• You have started a contemporaneous record of your participation hours.
• You have checked whether a first-year loss would even be usable given your basis, your personal use, and your income.

None of these require a frantic closing on December 30. They require the property to be genuinely in service and the planning to be done with your eyes open.

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