The Big Beautiful Bill restored 100% bonus depreciation for property acquired after January 19, 2025. For real estate investors, this means significant first-year tax deductions are back on the table at the federal level.
But here's what many investors overlook: your state may not follow the same rules.
Many states fully conform to federal bonus depreciation, while a similar number completely decouple. The rest fall somewhere in between. This disconnect can create confusion and missed opportunities for investors who assume federal and state treatment align.
Important: If you acquired property before January 20, 2025, the original phase-down rules still apply. You may only qualify for 40% bonus in 2025, 20% in 2026, or 0% in 2027. The acquisition date, not the placed-in-service date, determines your bonus percentage.
Understanding both federal and state rules is essential for maximizing after-tax cash flow.
What Is Federal Bonus Depreciation and Why Does It Matter?
Bonus depreciation allows investors to deduct a large percentage of qualifying property costs in the year the asset is placed in service. Instead of spreading deductions over 5, 7, 15, or 39 years, you capture the tax benefit upfront.
Under current law, 100% bonus depreciation applies to MACRS property with recovery periods of 20 years or less. This includes personal property like appliances and carpeting, land improvements such as parking lots and landscaping, and qualified improvement property (QIP). Notably, land value itself is never depreciable.
This is where cost segregation services become essential. A cost segregation study identifies and reclassifies building components into shorter recovery periods, maximizing the amount eligible for bonus depreciation.
Unlike the Section 179 deduction, there is no annual cap on bonus depreciation. Investors can claim unlimited deductions regardless of taxable income. Note that Section 179 conformity also varies by state, so do not confuse the two provisions.
Example: An investor purchases a $1,500,000 multifamily property in March 2025. A cost segregation study identifies $300,000 in 5-, 7-, and 15-year property. With 100% bonus, that creates a $300,000 first-year deduction, potentially saving $90,000 or more in federal taxes at a 30% effective rate. Results vary by property type and condition.
Why Your State May Not Play Along
Federal bonus depreciation rules do not automatically apply at the state level. Each state decides whether to conform to federal depreciation rules or decouple entirely.
States that fully conform allow the same bonus depreciation deduction on state returns. Examples include Arizona, Colorado, Iowa, Kansas, Louisiana, Michigan, Missouri, Montana, Nebraska, New Mexico, North Dakota, Oklahoma, Oregon, Utah, and West Virginia.
States that fully decouple require investors to "add back" bonus depreciation on state returns. This effectively disallows the accelerated deduction. Examples include California, Connecticut, Georgia, Hawaii, Idaho, Illinois, Indiana, Kentucky, Maine, Maryland, Massachusetts, New Jersey, New York, North Carolina, Ohio, Pennsylvania, Rhode Island, South Carolina, Vermont, Virginia, and Wisconsin.
States with no personal income tax do not impose state-level add-back requirements for individual investors. These include Texas, Florida, Nevada, Wyoming, South Dakota, Tennessee, Washington, and Alaska. However, Florida does impose corporate income tax and decouples for C-corps.
Some states have partial or conditional rules. Delaware decouples for corporate income tax. For personal income tax, conformity applies through 2025 but recent budget legislation may delay or limit the new 100% bonus. Verify current status before filing.
This list is illustrative, not exhaustive. State conformity rules change frequently. Always confirm your state's current treatment before filing.
What does "decoupling" mean for my state taxes?
If your state decouples, you must add back the federal bonus depreciation on your state return. You will not receive the accelerated tax benefit at the state level. You can still depreciate the property, but only over its standard recovery period. For commercial buildings, that means 39 years.
How State Conformity Affects Your Bottom Line
Consider two investors who each purchase identical $2,000,000 apartment buildings. One property is in Colorado. The other is in California.
Note: Tax rates shown are approximate and subject to change. The California rate reflects the highest marginal bracket, not the effective rate for all taxpayers.
The California investor still claims the full federal deduction. However, they receive no accelerated benefit on their state return. They must depreciate those assets over standard recovery periods at the state level, delaying tax savings by years.
For investors with Real Estate Professional Status, this matters even more. They can use depreciation losses to offset ordinary income. In a decoupled state, those large first-year losses simply do not exist on the state return.
Multi-state investors must maintain separate depreciation schedules for federal and each non-conforming state. For partnerships and S-corps with owners in multiple states, separate state-level depreciation tracking may be required for each non-conforming state where owners file returns.
5 Tips for Managing Federal and State Bonus Depreciation
1. Know Your State's Conformity Status Before You Buy
Factor state tax treatment into your acquisition analysis. A property in a high-tax, non-conforming state may deliver weaker after-tax returns than expected.
2. Maintain Dual Depreciation Schedules
For decoupled states, track the add-back in year one and subsequent state-level depreciation deductions in future years. Your CPA or tax software must handle both.
3. Leverage Cost Segregation Studies
A quality study from a firm like R.E. Cost Seg identifies assets eligible for accelerated depreciation. In conforming states, the bonus depreciation claimed on your federal return is also allowed on your state return.
4. Use Form 3115 for Existing Properties
Already own property? You can claim missed depreciation through a change in accounting method. Form 3115 allows you to catch up without amending prior returns.
5. Plan for Recapture
Bonus depreciation accelerates deductions, but those deductions are recaptured as ordinary income upon sale. Consider holding property long-term or using a 1031 exchange to defer recapture taxes.
How does cost segregation affect recapture when I sell?
All depreciation claimed, including bonus, is subject to recapture. Section 1245 recapture applies to personal property such as appliances and fixtures. Section 1250 recapture applies to certain real property improvements like QIP and land improvements. Planning ahead helps you minimize the tax impact at disposition.
What About Property Acquired Before January 20, 2025?
The restored 100% bonus depreciation only applies to property acquired after January 19, 2025. Property acquired before that date remains subject to the original phase-down schedule:
- 2025: 40% bonus depreciation
- 2026: 20% bonus depreciation
- 2027: 0% bonus depreciation
The binding contract rule also applies. If a written binding contract existed before January 20, 2025, that property does not qualify for the restored 100% rate, even if placed in service afterward. A written binding contract generally includes a signed purchase agreement. Consult your attorney or CPA to determine if your contract qualifies.
Investors using the STR loophole with short-term rentals should pay close attention. The acquisition date determines which bonus percentage applies, directly affecting first-year deductions.
Review your purchase agreements carefully before assuming you qualify for full bonus treatment.
Take Control of Your Tax Strategy
Federal bonus depreciation is back to 100%, but your state may have different plans. Understanding where your property is located and how your state conforms is essential for maximizing after-tax cash flow.
A professional cost segregation study identifies every eligible asset and provides documentation that withstands IRS scrutiny. Reputable providers conduct thorough site visits to ensure accuracy and compliance.
R.E. Cost Seg helps real estate investors navigate federal and state depreciation rules to capture every available deduction. Our team delivers detailed studies backed by engineering expertise and tax authority.
Request a free cost segregation estimate today.
