AI-POWERED COST SEGREGATION
Audit-ready cost segregation in minutes.
Turn your rental property’s depreciation into front-loaded tax savings — an engineer-grade study, footing-verified, for a fraction of the usual cost.
No card. Footing-verified. Available the moment you finish.
FIRST-YEAR DEDUCTION
Illustrative± $7,200 (Q3 confidence band)
7 / 12 questions answered · estimate sharpens with each answer
Sample shown — your number depends on your property.
- IRS audit-defensibleGrounded in the IRS Audit Techniques Guide + HCA 1997.
- Footing-verified mathEvery schedule reconciled to the cent by an independent harness.
- Minutes, not monthsInstant engine output — no on-site visit required.
AI-POWERED
AI does the heavy lifting. You stay in control.
CostSegLogic turns the documents of your rental into a cost-seg study using AI — built on engineered-study methodology, not a generic calculator. Every AI step is reviewable, and we’re plain about what the software does and doesn’t do.
AI document capture
Your closing docs become numbers.
Drop in a settlement statement (HUD-1 / closing disclosure) or a schedule of values and our AI reads the figures it needs — purchase price, land allocation, cost detail — instead of you keying them in.
Extracted figures are shown for your confirmation. You stay in control of every number.
AI-derived allocation
Engineered-study methodology, automated.
Our engine allocates basis across 5-, 15-, and 27.5-/39-year classes using the residual estimation approach from Chapter 4 of the IRS Cost Segregation Audit Techniques Guide — the same methodology engineered studies rely on.
Software-assisted, not an on-site engineering inspection. We say so plainly in every study.
WHAT’S IN EVERY STUDY
Federal, state, recapture, and Form 3115. Every time.
Most cost-seg shops stop at federal. That leaves state savings on the table and ignores the number that comes back when you sell. We don’t.
Federal
Y1 deduction with bonus.
plus class-life allocation across 5-, 7-, 15-, and 27.5-/39-year buckets.
State
Your state, your rate.
Your state’s actual conformity factor and your actual marginal rate. Most studies skip state entirely.
Recapture
Year-by-year schedule.
What comes back to ordinary income on sale, conversion, or partner buyout — modeled, not waved away.
Form 3115
Drafted and ready.
look-back drafted with your numbers. Ships with the full paid study so your CPA isn’t starting from a blank page.
Free 5-minute run covers federal, state, and recapture. Form 3115 ships with the full paid study.
AUDIT-DEFENSE BY DESIGN
218,000+ lines of code · ~100,000 lines of tests · 30+ IRC sections · all 50 states · independently footing-verified
RECAPTURE TRANSPARENCY
We publish your recapture schedule.
Nobody else does.
is the depreciation that comes back as ordinary income when you sell, convert, or buy out a partner. It’s the difference between a Y1 deduction that feels great and an after-tax exit that actually pencils.
Most cost-seg studies skip it — or hand-wave it with a footnote. Every CostSegLogic study includes a year-by-year recapture schedule modeled against your actual hold horizon. Same goes for state-tax conformity: most studies don’t bother. We do.
Sample recapture schedule
Illustrative| If you sold in | Cumulative depreciation | Recapture (ordinary) |
|---|---|---|
| Year 1 | $54,200 | $54,200 |
| Year 2 | $87,600 | $87,600 |
| Year 3 | $108,100 | $108,100 |
| Year 4 | $120,700 | $120,700 |
| Year 5 | $128,400 | $128,400 |
Sample property: $1.0M residential STR with 5/15-year reclassification. Your schedule depends on your property and your hold plan.
METHODOLOGY PEDIGREE
Built on cost segregation methodology IRS-blessed since 1997 — the same engineering used by Big 4 firms and REIT controllers for two decades. Used by property owners, including the founder. Trusted by CPAs, tax and real estate professionals.
WHO THIS IS FOR
What brings you here?
CostSegLogic is built for the property owner running their own rental, the long-term investor building wealth deliberately, the advisor or creator working alongside them, and the owner modeling a sale. Pick the path that fits.
STR OWNER OR BUYER
I run short-term rentals.
Airbnb, VRBO, the works. Cost seg is one of the highest-leverage tax moves available to you — and it’s been priced out for most STR owners until now. Start here.
LTR OWNER OR BUYER
I own long-term rentals.
Single-family, duplex, multifamily, small commercial. Whether you’re a real estate professional running a portfolio or a first-time investor with one property, the math works.
PARTNER
I advise rental owners.
CPAs, tax preparers, real estate agents, STR educators. We have a partner program that pays you fairly to recommend a study you can stand behind.
RECAPTURE
I’m selling. What do I owe back?
Selling, converting, buying out a partner — depreciation recapture is the number that determines what your after-tax proceeds actually look like. We’ll give it to you up-front.
A NOTE FROM THE FOUNDER
I built this because I needed it for my own STR portfolio.
We’re not here to sell you on doing a study. The firms with the biggest marketing budgets already do that work — and they bake the cost of doing it back into your invoice. You’re here because you already know you need one. What you’re looking for is the highest-quality option that delivers without the marketing tax.
CostSegLogic is the study I wished existed when I went looking for one on my own portfolio. It’s grounded in IRS-aligned methodology, CPA-reviewed, and rigorously verified at every step. Federal, state, and recapture in every study, because anything less isn’t a complete study.
Trust is earned by showing your work. You should see exactly how every number was generated, what the IRS expects, what your state expects, and what happens down the road when you sell.
GET STARTED
Run a free snapshot on your property.
No card. The interview adapts to your property type and your state. The snapshot is yours to download the moment you finish — we’ll also email you a copy.