Home / The STR Loophole / STR Tax Savings Calculator

STR Tax Savings Calculator

See how much a short-term rental can cut your taxes this year with cost segregation and 100% bonus depreciation, on the real 2025 and 2026 brackets.

Your property

$
Include closing costs you capitalize.
$
Beds, sofas, TVs, linens, hot tub. 5-year property. Bought separately, it is its own purchase, so it gets 100% bonus depreciation in year one with or without a study (we assume less only if placed in service in January 2025 with the box below unchecked).
%
Your county assessor's land ratio is a common source.
%
Appliances, carpet, furnishings that came with the house. Typical STR: 15-25% of the building.
%
Driveway, landscaping, fencing, pool. Typical: 5-10%.
Acquired usually means the day you closed. An earlier contract counts only if it was binding: losing an earnest-money deposit under 5% of the price does not make it binding.

Your taxes

$
%
$
Rent minus expenses. Negative if it runs at a loss.
Advanced
Estimated first-year tax savings
$37,280
Federal $30,585 + state $6,695. Without a cost segregation study: $4,513.
These savings hold up only if you can prove material participation

Your hour log is the proof. The Tax Court does not accept an after-the-fact "ballpark guesstimate" of hours (Moss v. Commissioner). Log your hours as you work, by voice or timer, with receipts attached.

Log your STR hours with REPSLog, free
Depreciable basis (price minus land, plus furniture)$420,000
Bonus depreciation (100% of 5- and 15-year property and furniture)$140,000
Regular depreciation on any non-bonus remainder$0
Building, 39-year, mid-month$3,895
First-year depreciation$143,895
STR loss after operating income$133,895
Loss that offsets your other income$133,895
Federal tax without the rental$49,468
Federal tax with the rental$18,883
Estimated first-year savings $37,280

How the STR loophole turns depreciation into tax savings

A short-term rental whose average guest stay is 7 days or less is not a "rental activity" under the passive loss rules (Treas. Reg. 1.469-1T(e)(3)(ii)(A)). If you materially participate in it, its loss is non-passive and can offset your W-2 and other income. Depreciation is what creates that loss: a cost segregation study moves part of the purchase price into 5- and 15-year property, and bonus depreciation lets you deduct all of it in the first year. Read the full STR loophole guide.

How this calculator works

  1. Depreciable basis = purchase price minus land. Land is never depreciable.
  2. Cost segregation splits the basis into 5-year personal property, 15-year land improvements and the building.
  3. Bonus depreciation deducts the 5- and 15-year property, and furniture bought separately, in year one: 100% if you acquired it after January 19, 2025, 40% (2025) or 20% (2026) for earlier binding contracts. Furniture bought separately is its own purchase, so it gets 100% for a 2025 or 2026 placement (we assume otherwise only for January 2025). Any remainder uses regular MACRS: 20% in year one for 5-year property and 5% for 15-year with the half-year convention, or 5% and 1.25% if placed in service from October to December (the mid-quarter convention, IRS Publication 946 Table A-5).
  4. The building is depreciated over 39 years with the mid-month convention. A house rented to transient guests (stays normally under 30 days) is usually nonresidential real property, not the 27.5-year residential kind. That is a different test from the 7-day average stay, which decides whether the loss can be non-passive.
  5. Your STR loss is first-year depreciation minus the property's net operating income.
  6. The excess business loss limit (IRC 461(l)) caps how much of that loss offsets other income this year. The rest carries forward.
  7. Federal savings = your federal tax without the loss minus your tax with it, on the actual brackets and standard deduction. State savings apply your state rate to the deductible loss, up to the income you have. Net rental income is taxed either way, and depreciation shelters it either way.

Worked example (the default inputs)

A $500,000 short-term rental, 20% land, plus $20,000 of furniture, placed in service in June 2026 by a married couple earning $300,000, with a cost segregation study that puts 20% of the building in 5-year property and 10% in 15-year land improvements:

StepAmount
Depreciable basis, including furniture$420,000
Bonus depreciation (100% of 5-year, 15-year and furniture)$140,000
Building, 39-year, first year$3,895
First-year depreciation$143,895
STR loss (after $10,000 of operating income)$133,895
Federal tax savings$30,585
State tax savings (5%)$6,695
Total first-year savings$37,280
Same property without cost segregation$4,513

What many STR calculators leave out

RuleWhat it does to your savings
39-year recovery for transient rentals (stays under 30 days)Using 27.5 years overstates the building's yearly depreciation by about 42%.
Bonus depreciation by acquisition date100% only for property acquired after January 19, 2025. Earlier contracts get 40% or 20%.
Real brackets, not one flat rateA large loss can push you down through several brackets, so each extra dollar saves less.
Excess business loss limit, IRC 461(l)Caps the loss that offsets wages at $256,000 single and $512,000 joint for 2026. The excess carries forward.
Material participationWithout it the loss is passive and saves nothing this year.
State conformitySome states, such as California, do not allow bonus depreciation.
Recapture on saleDepreciation is taxed back when you sell unless you exchange or hold.

Own a long-term rental, or bought years ago? The cost segregation calculator covers REPS, the $25,000 allowance and Form 3115 catch-up depreciation.

Prove material participation, or the savings disappear

STR loophole cases turn on your hour log. You need more than 100 hours and at least as much as anyone else, more than 500 hours, or one of the other material participation tests, and the Tax Court does not accept an after-the-fact "ballpark guesstimate" of hours (Moss v. Commissioner, 135 T.C. 365 (2010), where an hours summary written two years later fell short of the 750-hour test). REPSLog is a time tracker built for this: log hours by voice or timer, attach receipts and photos, count your spouse's hours, and export a CPA-ready report. Learn how the STR loophole works or start tracking for free.

Frequently asked questions

How much can the STR loophole save me in taxes?

It depends on your purchase price, how much of it a cost segregation study can move into short-lived property, your tax bracket and whether you materially participate. In the example below, a $500,000 short-term rental with a 30% cost segregation reclass and $20,000 of furniture produces $143,895 of first-year depreciation, which saves a married couple earning $300,000 about $30,585 in federal tax in 2026, plus state tax. The calculator above runs your own numbers on the real 2025 and 2026 tax brackets.

Is a short-term rental depreciated over 27.5 or 39 years?

Usually 39. Residential rental property (27.5 years) must get 80% or more of its rent from dwelling units, and a unit in a building where more than half the units are used on a transient basis is not a dwelling unit (IRC 168(e)(2)(A)(ii)). For a single short-term rental house, that is the whole house. Treasury regulations treat accommodations as transient when the rental period is normally less than 30 days (Treas. Reg. 1.48-1(h)(2)(ii), a rule practitioners apply by analogy), so a short-term rental is usually depreciated over 39 years as nonresidential real property. This is a separate rule from the 7-day average stay, which decides whether the rental is passive. Calculators that use 27.5 years overstate the building's yearly depreciation by about 42%. Ask your CPA which applies to your property.

Is bonus depreciation 100% again?

Yes, for property acquired after January 19, 2025. The One Big Beautiful Bill Act (Public Law 119-21) restored permanent 100% bonus depreciation for it. Property acquired earlier under a written binding contract stays on the old phase-down: 40% if placed in service in 2025 and 20% in 2026. "Acquired" usually means the day you closed; a purchase contract signed earlier counts only if it was binding, and one whose only penalty is losing an earnest-money deposit under 5% of the price is not (Treas. Reg. 1.168(k)-2(b)(5)). For 2025 returns you can also elect 40% instead of 100% for the year (IRC 168(k)(10)); the calculator assumes you do not.

Do I need to materially participate to use the savings?

Yes. The STR loophole works because a rental with an average stay of 7 days or less is not a "rental activity" under the passive loss rules, so the loss is non-passive only if you materially participate. A rental with an average stay of 30 days or less also qualifies if you provide significant personal services, such as daily cleaning or meals (Treas. Reg. 1.469-1T(e)(3)(ii)(B)). The most common tests are more than 100 hours and at least as much as anyone else, more than 500 hours, or doing substantially all the work (Treas. Reg. 1.469-5T(a)). Without material participation the loss is passive and is suspended until you have passive income or sell, and the $25,000 allowance for rental losses does not apply, because such an STR is not a rental activity. Keeping a log of your hours as you go is how you prove it if the IRS asks.

Is there a limit on how much of the loss can offset my W-2 income?

Yes. The excess business loss limit (IRC section 461(l)) caps the net business loss that can offset wages and other non-business income in one year: $313,000 single and $626,000 married filing jointly for 2025, and $256,000 and $512,000 for 2026. Anything above the cap becomes a net operating loss you carry forward. The calculator applies this cap.

Does my state give me the same savings?

Not always. Several states, including California, do not follow federal bonus depreciation, so the state deduction in year one can be much smaller. The calculator applies your state rate to the federal loss, up to the income you have, which is an upper bound. Check your state's conformity with your CPA.

Do I have to pay the depreciation back when I sell?

When you sell, depreciation you took is recaptured. Depreciation on 5-year property and furniture, and bonus depreciation on 15-year land improvements above straight line, is taxed at ordinary rates (IRC 1245 and 1250, Treas. Reg. 1.168(k)-2(g)(3)); the building's depreciation at up to 25%. A 1031 exchange can defer it, and holding until death can erase it through the basis step-up. The savings are real, but they are largely a deferral plus the rate difference, not all a permanent reduction.

Can REPSLog help me qualify for the STR loophole?

REPSLog does not qualify you: you qualify by materially participating in a rental whose average stay is 7 days or less. REPSLog is the record that proves it. It keeps an hour counter for each short-term rental against the 100-hour or 500-hour test, shows your hours and your spouse's next to your cleaner's, co-host's and contractors' so you can see whether anyone participated more than you, keeps receipts and photos with each entry, and exports the year for your CPA. Whether you qualify is your CPA's call.

Is REPSLog ready for the STR loophole?

Yes. Mark a property as a short-term rental and every hour logged against it goes to that property's own counter, 100 hours by default or 500 if your CPA groups your rentals, separate from the 750-hour REPS count. Long-term and short-term rentals live in one account with a toggle between them. STR tracking is on every plan, including Free (1 property and 5 entries), on iPhone, Android and the web.

Does REPSLog track my cleaner's or co-host's hours?

Yes. Log their work as a participant on the entry. Each short-term rental then shows a breakdown by participant, so you can check the 100-hour test's condition that nobody participates more than you do.

Can REPSLog turn my Airbnb and Vrbo bookings into logged hours?

It helps. With Booking Calendar Sync (Premium) you connect a listing's Airbnb, Vrbo or other iCal link, each stay appears on your REPSLog calendar, and REPSLog suggests the work around it, such as cleaning and turnover or restocking, as a prefilled entry. A stay never becomes an entry on its own: you review and save each one.

What does my CPA get from REPSLog?

A year of entries as PDF, Excel and CSV files, with short-term rental entries in their own files. Each row has the property, date, hours, description, who did the work and the category, and you can include your receipts and the date and time each entry was created and last edited, which shows the log was kept as you went.

How much does REPSLog cost?

New accounts are offered a 14-day free trial of Starter or Premium with full access; cancel before day 14 and you pay nothing. There is also a Free plan (5 entries and 1 property, and it never expires), Starter at $14.99 a month or $149.99 a year, and Premium at $19.99 a month or $199.99 a year, which adds voice logging, AI autofill, calendar and booking sync, reminders and team access.

Is this calculator tax advice?

No. It is an estimate for planning a conversation with your CPA. It assumes the standard deduction, one property, no personal use of the rental, and a first-year result, and it applies the excess business loss limit to this rental alone. Your real result depends on your whole return.

This calculator gives a planning estimate, not tax advice. It assumes the standard deduction, a single property with no personal use, and the first tax year only. It does not model the net investment income tax, self-employment tax, the alternative minimum tax, the QBI deduction, or other business income and losses that also count toward the excess business loss limit. Tax brackets and limits: IRS Rev. Proc. 2024-40 (2025), with the 2025 standard deduction from IRC 63(c)(7) as amended by Public Law 119-21 (see Rev. Proc. 2025-32 sec. 3), and Rev. Proc. 2025-32 (2026). Depreciation: IRS Publication 946. Passive activity rules: IRS Publication 925. Last updated 2026-09-24.

Try it for free!

Get started today. Simplify your REPS journey and save big!