Turn-Key Cost Segregation Platform
Built for Tax Professionals
Everything your firm needs to deliver cost segregation at scale: detailed engineering approach, IRS-compliant methodology with audit support, and nationwide coverage. All without increasing your operational burden.
Trusted by CPA firms nationwide to scale their tax advisory services while maintaining full client relationships.
Why This Matters for Your Firm
Position your practice as a comprehensive tax advisory firm and unlock new revenue streams from your existing real estate investor clients.
Expand Services
Add cost segregation as a core service offering without hiring specialized staff or investing in new infrastructure.
Scalable Growth
Serve multiple clients simultaneously without proportional increases in staff, overhead, or operational complexity.
Strengthen Relationships
Deliver immediate tax savings to real estate clients and position yourself as their proactive strategic advisor.
Incremental Revenue
Generate new revenue from existing client relationships by expanding your tax advisory service offerings.
Why CPA Firms Trust RentalWriteOff
Built specifically for accounting professionals who serve real estate investors.
Audit Support with Every Report
We stand behind our methodology and reports at no extra cost. If a study is questioned during an IRS examination, we provide complete documentation and defend our approach throughout the process.
IRS-Compliant
Our studies follow the official IRS Cost Segregation Audit Techniques Guide with a detailed engineering approach, ensuring full defensibility and professional standards.
2 Business Day Turnaround
Industry-leading speed delivers complete studies in just 2 business days. Fast enough for year-end planning and time-sensitive filing situations without sacrificing quality.
Nationwide Coverage
Serve clients with properties in all 50 states through our fully remote process. No geographic limitations or additional complexity for out-of-state properties.
Detailed Engineering Approach
Property-specific Smart Analysis with detailed RCNLD calculations and credible cost sources, not generic database estimates. Materially higher allocations than traditional DIY.
Scalable Operations
Handle multiple client studies simultaneously without adding staff or operational burden. Platform efficiency supports firm growth without complexity.
A CPA's Perspective
Why WCG CPAs & Advisors partnered with RentalWriteOff.
"We've integrated RentalWriteOff directly into the WCG ecosystem. It's not just giving clients a link — we've made cost segregation a core service that strengthens our advisory relationships and delivers meaningful savings without operational complexity."Read the full case study
Smart Analysis: Beyond Traditional DIY
Cost segregation has long been a choice between expensive boots-on-the-ground engineering studies and low-cost DIY tools that rely on statistical averages. RentalWriteOff provides the middle ground.
Property-Specific Data vs. ZIP Code Averages
Our Smart Analysis uses actual property photos and data to identify components and quality levels, not neighborhood-level statistical databases.
Higher Allocations Than Traditional DIY
Traditional DIY cost segregation using only databases results in 7-10% lower allocations to accelerated property classes. Our detailed approach recovers those missed opportunities.
Detailed Engineering, Not Just Estimation
We use an enhanced Residual Estimation Method with detailed RCNLD calculations and credible cost sources, following the IRS Cost Segregation Audit Techniques Guide.
Comprehensive Documentation
Every study includes extensive supporting documentation for audit defensibility, not just a summary report and spreadsheet.
Full Audit Support Included
We stand behind our methodology and reports at no extra cost. If a client's study is questioned, we provide complete documentation and defend our approach.
Industry-Leading 2 Business Day Turnaround
Fast enough for year-end tax planning and time-sensitive filing situations without compromising quality or accuracy.
The Cost Segregation Spectrum
Traditional DIY
7-10% LowerStatistical databases, ZIP code averages, minimal documentation
RentalWriteOff
The Sweet SpotProperty-specific Smart Analysis, detailed engineering, comprehensive documentation
You control what you charge clients
Full Engineering
Overkill for MostOn-site inspections, boots-on-the-ground, typically for commercial properties
Ready to offer premium cost segregation services to your clients?
Start Your Partnership TodayChoose Your Partnership Model
Select the approach that best fits your firm's client service model and operational preferences.
White-Label Platform
Deliver cost segregation as a core service under your firm's brand. Maintain complete client relationships while we handle the technical engineering work behind the scenes.
Referral Program
Prefer a hands-off approach? Share your referral code with clients and we handle the entire process from intake to delivery.
How White-Label Partnership Works
A seamless process that keeps your firm at the center of every client interaction.
Submit via Portal
Access our secure CPA portal and submit client property details. Takes just a few minutes with minimal documentation.
We Handle Analysis
Our platform performs detailed property analysis using Smart Analysis technology and a detailed engineering approach.
Branded Delivery
Receive complete, IRS-compliant reports that you can deliver to your client under your firm's brand and letterhead.
You Maintain Control
Your firm maintains full client relationship and receives credit for the service. We provide backend support.
Industry-Leading 2 Business Day Turnaround
Our technology-driven platform delivers reports in just 2 business days — fast enough to meet even the tightest tax planning cycles and filing deadlines.
Start Your White-Label Partnership
Fill out the form below and we'll help you get set up with portal access and partnership details. Most firms are operational within 48 hours.