How the 2026 Bonus Depreciation Calculator Works
Enter Your Property Details
Select your purchase price, land allocation, property type, and the year you placed it in service. The calculator handles the rest, including the correct bonus depreciation percentage based on current law.
Estimate Your Cost Segregation Impact
Select your property type, or enter your exact reclassification percentage. This tells the calculator how much of your building basis shifts from long-life property into bonus-eligible 5, 7, and 15-year asset classes.
See Your First-Year Write-Off
The calculator instantly shows your total Year 1 deduction, estimated federal tax savings, and a side-by-side comparison of depreciation with and without cost segregation. Share with your CPA for tax planning.
Why Real Estate Investors Use This Calculator
Most bonus depreciation calculators online are built for equipment buyers, manufacturers pricing out a new CNC machine or a contractor buying a fleet of trucks. Those tools don't account for cost segregation, land allocation, or the difference between residential and commercial recovery periods.
This calculator was built specifically for real estate investors who want to understand what happens when you combine a property acquisition with a cost segregation study under the current 100% bonus rules. The core question it answers is straightforward: how much of my purchase price can I write off in Year 1, and what does that save me in federal taxes?
That's a question every investor should be able to answer before they close on a deal, not after. The delta between standard straight-line depreciation and accelerated depreciation with cost segregation is often six figures on a single property. On a $2 million multifamily acquisition, the difference between a ~$35,000 first-year deduction (standard MACRS) and a $500,000+ first-year deduction (with cost seg and 100% bonus) can reshape an investor's entire tax position for the year.
If you've never had a cost segregation study done, the calculator's preset estimates (based on industry averages for residential, commercial, and specialty property types) give you a realistic starting point. This bonus depreciation allows you to see your numbers before you commit, not after.
The information on this page is for general informational purposes only and does not constitute tax, legal, or financial advice. Tax laws are complex and subject to change. Consult a qualified tax professional for advice specific to your situation.