RentalWriteOff Review (2026)

Pricing, methodology, audit support, and where this flat-fee tool fits.

Editorial note: Cost Segregation Reviews is operated by Cost Seg Smart, which appears as one option among many on this site, including in this review. Public-facing data only — pricing, methodology, and credentials reflect what RentalWriteOff publishes on its own site. Reviewed September 2026.

RentalWriteOff sells a single product: a $899 flat-fee cost segregation report for residential rental property, delivered in 2 business days, classifying components into MACRS 5-, 7-, 15-, and 27.5-year buckets under Rev. Proc. 87-56. Its terms of service state directly that it is "not a CPA firm, law firm, or financial advisor" and disclaim liability for audit outcomes, and its audit protection is capped at 2 free hours within 5 years before a $300/hour rate applies. Cost Seg Smart prices the same sub-$300,000 residential band lower, at $495, as an engineer-reviewed report with a CPA-Ready Guarantee rather than a capped-hours audit-protection add-on.

Pricing detail

$899 flat fee per property, one-time payment, delivered in 2 business days after complete submission. There is no tiered structure — one price covers the report regardless of property value within the residential scope the site describes.

Pricing reflects what RentalWriteOff publishes as of September 2026. For context on where $899 sits among sub-$1,000 options, see our guide to cheap cost segregation.

What you get

A "Smart Report & Itemization" with comprehensive schedules and documentation, plus Form 3115 for eligible look-back studies. The site describes the report as "expert-reviewed before delivery" with a stated final quality check, but does not identify whether a CPA or a licensed engineer signs the finished report.

Methodology basis

RentalWriteOff describes an "engineering-based methodology" aligned with the IRS Cost Segregation Audit Techniques Guide and MACRS classification rules under Rev. Proc. 87-56 — the same classification framework every provider on this site applies. What the site does not specify is who performs the property-specific analysis (an engineer, a tax preparer, or software alone) or whether a physical inspection is ever part of the process.

Property-type fit

Single-family rentals, condos, townhouses, duplexes, triplexes, fourplexes, short-term rentals (Airbnb/VRBO), and mobile homes up to 4 units. It is a residential-only tool; the site publishes no commercial offering.

Audit support terms

RentalWriteOff's terms of service state 5 years of audit protection post-delivery, including up to 2 hours at no additional cost; support beyond that is billed at $300 per hour. The service covers supplying documentation and responding to taxing-authority inquiries, and explicitly excludes "legal or tax representation, payment of penalties, interest, or taxes." Its terms state it is "not a CPA firm, law firm, or financial advisor," disclaim liability for audit outcomes, penalties, or other tax consequences, and direct users to consult their own licensed tax professional before relying on the report.

Pros

• Single, published flat fee — no tiers or hidden add-ons to price out in advance.
• Fast, specific turnaround: 2 business days after a complete submission.
• Refund policy and audit-protection limits are published in plain terms rather than left unstated.

Cons

• Does not state who prepares or signs the report — engineer, CPA, or software output alone.
• Audit protection is capped at 2 free hours within 5 years, then billed at $300/hour, with no IRS representation.
• Post-delivery refunds are narrow: limited to duplicate charges or an uncorrectable material error.

Verdict — who this is for

RentalWriteOff fits a residential rental owner who wants one clear price, a fast turnaround, and is comfortable with the site's own framing that it is not a CPA firm and that audit support is hours-limited. It is a weaker fit for someone who specifically wants to know a licensed engineer or CPA is signing the report before ordering, since that detail is not published. See software versus an engineered study for what documentation a CPA typically wants to see behind a report like this.

FAQ

Sources

• https://rentalwriteoff.com
• https://rentalwriteoff.com/pricing
• https://rentalwriteoff.com/terms

Accessed 2026-09-06.

Pricing and operational details reflect public information as of September 2026. Provider corrections welcome via the submission form. This review is not legal, tax, or financial advice — confirm cost segregation suitability with your CPA before ordering a study or using a software tool.