If you own — or you're weighing the purchase of — a short-term rental on 30A, the numbers that decide whether the property works aren't only the nightly rate and occupancy. Some of the most important ones live on your tax return. One of the most powerful and most misunderstood tools available to vacation-rental owners is the pairing of cost segregation and bonus depreciation, which can move a large share of your deductions into the very first year you own the home. For a Gulf-front cottage in Seaside or a carriage house in WaterColor, that first-year benefit can meaningfully change your cash-on-cash return. This guide explains how 30A short-term rental bonus depreciation works in plain language, why the 2025 tax law made it more attractive, and — just as important — where the traps are. Let's dive in.
An important note before we start: This article is general educational information, not tax, legal, or accounting advice. Stroop Group and Mark Stroop LLC are a real estate team, not tax advisors. Depreciation strategy depends entirely on your personal facts — your income, how you use the property, how much you participate, and your long-term plans. Before acting on anything here, talk to a licensed CPA or tax advisor about your own situation.
Start With How Rental Depreciation Normally Works
When you buy a rental property, the IRS lets you recover the cost of the building — not the land — through depreciation, an annual deduction that offsets rental income. For residential rental property, the standard schedule is straight-line depreciation over 27.5 years, according to IRS Publication 527. Split evenly, a $1 million building, land excluded, produces roughly $36,000 of depreciation a year for nearly three decades.
That steady write-off is useful, but slow. Cost segregation and bonus depreciation let owners pull a large share of those deductions forward — sometimes into a single year. To see how, it helps to understand what a building is made of in the eyes of the tax code.
What a Cost Segregation Study Actually Does
A cost segregation study is an engineering-based analysis that breaks a building into its components and reclassifies them into shorter depreciation lives. Instead of treating the whole structure as 27.5-year property, the study identifies items that qualify as personal property or land improvements — think cabinetry, flooring, appliances, decorative lighting, window treatments, pool equipment, landscaping, driveways, and fencing — and assigns them to 5-, 7-, or 15-year recovery periods.
This matters because bonus depreciation, described next, applies to property with a recovery period of 20 years or less. The 27.5-year building shell does not qualify; the 5-, 7-, and 15-year components carved out of it do. On a furnished 30A vacation rental, those short-life components can represent a substantial slice of the purchase price — which is exactly why cost segregation and short-term rentals are so often discussed together.
How 100% Bonus Depreciation Front-Loads Year One
Bonus depreciation lets you deduct a large percentage of a qualifying asset's cost in the year it is placed in service, rather than spreading it across decades. The recent change is the headline: under the One Big Beautiful Bill Act, signed in July 2025, bonus depreciation was restored to a permanent 100% for qualified property acquired and placed in service after January 19, 2025, according to the IRS. That reversed the earlier phase-down under the Tax Cuts and Jobs Act, which had been stepping the rate down — to 40% for property placed in service in 2025 under prior law — on its way to zero.
Put the two tools together: a cost segregation study reclassifies a meaningful portion of a 30A rental into 5-, 7-, and 15-year property, and 100% bonus depreciation then lets you deduct essentially all of that portion in year one. National accounting firms including BDO and RSM have described the restored 100% rate as a significant opportunity for real estate investors. A few qualifications the IRS guidance spells out: the property generally must be acquired after January 19, 2025 (property under a written binding contract signed before January 20, 2025 can fall under the old phase-down), and taxpayers may elect a 40% rate instead of 100% for the first year if that better fits their planning.
The Short-Term Rental Rule That Changes Everything
Here is where 30A vacation rentals get interesting. Normally, rental real estate losses are "passive," and passive losses can only offset passive income — not your salary or business profits. A big first-year depreciation deduction would simply be trapped until you had passive income or sold the property. But there is a well-known exception rooted in the passive activity regulations: if the average period of customer use is seven days or less, the activity generally is not treated as a "rental activity" at all. Instead, it is treated as a trade or business.
Most 30A short-term rentals — booked by the night or the week through platforms like Airbnb and VRBO or through a local manager — have an average guest stay well under seven days. When that is the case, and when the owner materially participates (explained below), the resulting losses can be treated as non-passive and used to offset other non-passive income such as W-2 wages or business income. This is what tax professionals informally call the "short-term rental loophole." It is not really a loophole — it is a specific application of existing rules — but the label has stuck.
Material Participation: The Test You Have to Meet
The seven-day rule alone is not enough. To treat the losses as non-passive, you generally must materially participate in the activity. The regulations lay out several tests, and you need to satisfy at least one. The most commonly cited include participating more than 500 hours during the year; doing substantially all of the work in the activity; or participating more than 100 hours and more than any other individual, including a property manager. Time spent on booking, guest communication, maintenance coordination, supply runs, and bookkeeping can count — but the IRS expects contemporaneous records, not after-the-fact estimates.
For an out-of-town owner who hands everything to a full-service 30A property manager, material participation can be difficult to establish, because the manager may be doing more of the work than the owner. For a hands-on owner who self-manages, it is more attainable. This is a fact-specific question, and it is precisely the kind of thing to map out with your CPA before you count on the deduction.
Depreciation Recapture: The Other Side of the Trade
Accelerated depreciation is a timing benefit, not free money. When you eventually sell, the deductions you took are generally "recaptured," meaning a portion of your gain is taxed. Depreciation on personal-property components can be recaptured as ordinary income under Section 1245, and unrecaptured gain attributable to real property can be taxed at a federal rate of up to 25%, according to the IRS. Some owners defer this through a 1031 like-kind exchange; others plan around it based on how long they intend to hold. The point is simple: front-loading deductions can be very valuable, but it changes the math at sale, so the strategy should be evaluated over the full hold period — not just year one.
What to Confirm With Your CPA
Before you build a purchase or a tax plan around any of this, confirm the specifics with a licensed professional. A short checklist to bring to that conversation:
- Placed-in-service timing. When the property was, or will be, acquired and placed in service, and which bonus depreciation rate applies to your situation.
- Average guest stay. Whether your booking pattern actually averages seven days or less, and how you will document it.
- Material participation. Which test you can realistically meet, and how you will keep a contemporaneous time log.
- Cost segregation study. Whether a study makes sense for your property's price and component mix, and which provider to use.
- Recapture and exit. How accelerated depreciation affects your eventual sale, and whether a 1031 exchange fits your plans.
- Your income picture. Whether you have the kind of non-passive income these losses could actually offset in the first place.
Putting It Together on 30A
The 30A corridor — from Dune Allen and Gulf Place on the west end to Rosemary Beach and Alys Beach on the east — is one of the most established vacation-rental markets on the Gulf Coast, which is part of why these tax questions come up so often here. A well-located, well-furnished short-term rental can pair strong seasonal demand with meaningful first-year tax benefits when the strategy is executed correctly. But that last phrase carries real weight: the timing rules, the seven-day test, material participation, and recapture all have to line up, and they line up differently for every owner.
If you want help evaluating a 30A short-term rental — from underwriting the purchase to understanding how it fits alongside a tax strategy your CPA designs — connect with Mark Stroop LLC. The team brings local 30A knowledge, analytical guidance, and practical insight for buyers looking at primary homes, second homes, and investment property.
FAQs
Is bonus depreciation really 100% again?
Yes. The One Big Beautiful Bill Act, signed in July 2025, restored a permanent 100% bonus depreciation for qualified property acquired and placed in service after January 19, 2025, according to IRS guidance. This is educational information, not tax advice — confirm how it applies to you with a CPA.
What is cost segregation in plain terms?
It is an engineering-based study that separates a building into components and assigns shorter depreciation lives of 5, 7, or 15 years to items like flooring, cabinetry, appliances, and landscaping. Those shorter-life components are what can qualify for bonus depreciation.
Why does the seven-day average stay matter?
Under the passive activity regulations, a property whose average guest stay is seven days or less generally is not treated as a "rental activity." Combined with material participation, that can allow losses to offset non-passive income such as wages — the so-called short-term rental loophole.
Does hiring a property manager disqualify me?
Not automatically, but it can make material participation harder to prove, since you generally must participate more than others involved. Whether you qualify is fact-specific; document your hours and review it with your CPA.
Will I owe the deductions back when I sell?
Often, in part. Depreciation is generally recaptured at sale — some as ordinary income, some at a federal rate up to 25% — unless deferred through a strategy like a 1031 exchange. Plan for the full hold period, not just year one.
Is Stroop Group giving tax advice?
No. Stroop Group and Mark Stroop LLC are a real estate team, not tax advisors. Everything here is general education. Your CPA or tax advisor should guide any decision based on your specific circumstances.
