Cost Segregation
for your clients' rentals.
Fast, IRS-compliant cost segregation studies for residential rental properties, built to plug cleanly into your tax practice.
2 business days · Audit support included · Nationwide coverage
2 business day turnaround
Fast enough for year-end planning without sacrificing report quality.
Engineering-based methodology
Property-specific analysis with detailed documentation, not ZIP-code averages.
Audit support included
If a study is ever questioned, we respond on methodology and documentation at no extra cost.
Why CPAs Use the RentalWriteOff CPA Program
A reliable cost segregation option for your clients' residential rentals — without adding cost segregation expertise to your practice.
IRS-Compliant Methodology
Every report follows IRS guidelines with a detailed engineering approach. Classifications, cost basis allocations, and supporting detail all ready for your CPA or tax software to apply on Form 4562 or Form 3115.
2 Business Day Turnaround
Fast enough to use in year-end planning, extensions, and time-sensitive filing windows — without sacrificing report quality.
Flat, Predictable Pricing
Flat fee per property. No hourly billing, no complex quoting, no surprises. Easy to communicate to clients as part of their tax strategy.
Full Audit Support
If a study is ever questioned by the IRS or a state taxing authority, we respond on methodology and documentation at no additional cost.
Nationwide, Fully Remote
Clients in all 50 states. Fully remote process using photos, records, and satellite imagery. No site visits required.
Residential Focus
Single-family rentals, 2–4 unit properties, short-term rentals (Airbnb/VRBO), and manufactured housing. Built specifically for residential, not repurposed commercial workflows.
Interested in the CPA Program?
Get in touch and we'll walk you through how we work with firms like yours.
How the CPA Program Works
A simple process designed to plug cleanly into your tax practice.
Submit the Property
Send us the property address, placed-in-service date, cost basis, and photos. Takes about 5 minutes per property.
We Build the Study
Our team performs the engineering analysis, classifies assets into 5-, 7-, 15-, and 27.5-year recovery periods, and runs final quality review.
Report Delivered
You get a complete, IRS-compliant report within 2 business days — everything your CPA or tax software needs to apply on Form 4562 or prepare a Form 3115 catch-up.
Audit Support If Needed
If a study is ever questioned, we respond on methodology and documentation. No extra fee, no finger-pointing.
Own rental property yourself? Save thousands on taxes.
Use our free savings calculator to see how much a cost segregation study could save you. IRS-compliant reports delivered in 2 business days with audit support included, at a flat fee.
Get in Touch About the CPA Program
Tell us a little about your practice and we'll reach out to walk you through how the CPA Program works.
Frequently Asked Questions
Common questions from CPAs evaluating the program.
What is the RentalWriteOff CPA Program?
The CPA Program is how RentalWriteOff works with accountants and tax professionals whose clients own residential rental properties. We deliver fast, IRS-compliant cost segregation studies so your clients can accelerate depreciation without you having to add cost segregation expertise to your practice.
How fast is turnaround?
Two business days from complete submission. Every report is built from a standardized engineering methodology with a final quality review before delivery.
What property types do you support?
Residential rental properties up to 4 units: single-family rentals, condos, townhouses, duplexes, triplexes, fourplexes, short-term rentals (Airbnb/VRBO), and manufactured housing.
What does the report include?
Every report includes reclassified asset schedules broken out by 5-, 7-, 15-, and 27.5-year recovery periods, cost basis allocations, photo documentation, methodology notes, and the supporting detail your CPA or tax software needs for Form 4562 or Form 3115.
Do look-back studies work for prior-year properties?
Yes. For properties placed in service in a prior year, a look-back study provides everything your CPA or tax software needs to file Form 3115 and claim missed depreciation as a Section 481(a) catch-up deduction on the current return. RentalWriteOff does not file Form 3115 — we provide the supporting engineering report.
What is included with audit support?
If a client is audited, we provide the supporting documentation for the study and respond to reasonable inquiries from the taxing authority about our methodology and calculations. Audit support is included with every report.
How do I get started?
Fill out the contact form above, email support@rentalwriteoff.com, or call 307-271-8741. We'll walk you through how the CPA Program works and get you set up to submit your first property.