Real estate has a lot of moving parts and one of the reasons I began to write about the process was to cement some of the basics that I learned over the years. One of the basics recently got a big update. Depreciation.
Somewhere along the way I forgot everything about depreciation except how to spell it and use it in a sentence. Read here I needed a refresh; hope you’ll find this helpful.
Depreciation is one real estate’s standard tools and most people (me) lack enough information to use it effectively. It's a non-cash deduction that reduces taxable income year after year, improving cash flow while property appreciates. Those that figure out how to use it a little bit save money on their taxes, those that wield it like a sword build wealth.
Depreciation
Depreciation is the IRS's way of letting you deduct the cost of a long-term income-producing asset over the years it generates revenue, rather than expensing the entire cost the year you buy it. For real estate, this means the building—not the land—can be deducted gradually, creating an annual tax deduction that doesn't move a dollar out of your bank account.
Here's why it matters: you collect rental income, but the IRS lets you deduct a portion of the building's cost each year as "depreciation expense." That deduction reduces your taxable rental income, which means lower taxes. Meanwhile, your property is likely appreciating. The math is simple and powerful—the government is effectively subsidizing the gap between your actual cash return and your taxable income.
The clock starts when the property is "placed in service," meaning it's ready and available to rent or produce income. It's not the purchase date; it's the date you can legally rent it. This distinction matters for timing, especially if you're closing in December and the tenant doesn't move in until February.
Depreciable
Not everything you own can be depreciated. The IRS gets tetchy about rules and knowing them a little bit doesn’t serve one as well as having a tax person. Expert guidance is the difference between aggressive planning and audit risk.
The building itself is depreciable. All structural components—walls, roof, foundation, electrical systems—are depreciable. Land is never depreciable, no matter how much you spend improving it (with limited exceptions for specific improvements like roads or drainage systems).
Personal property inside the building often qualifies for shorter depreciation lives. Appliances, carpeting, HVAC systems, and fixtures can be reclassified and depreciated faster than the building itself. This is where cost segregation studies come in—a specialized review of every component of your property and assigns it the correct recovery period. A good cost-seg study can move 20 to 40 percent of your building basis into shorter lives, materially accelerating your deductions.
Your depreciable basis is your purchase price plus any capitalized improvements (major renovations, not routine maintenance), minus the land value. Land value is typically determined by appraisal, local tax assessments, or a cost-allocation approach. Get this number wrong, and your entire depreciation schedule is off. IRS Publication 527 provides guidance, but many investors hire appraisers to nail it down.
Recovery Periods
Residential rental buildings depreciate over 27.5 years using the straight-line method. Commercial (nonresidential) buildings take 39 years. Personal property is faster: appliances, carpeting, and site improvements typically depreciate over 5, 7, or 15 years depending on classification. These are not negotiable—they're set by the Modified Accelerated Cost Recovery System (MACRS) rules under IRC Section 168.
Straight-line depreciation means you deduct the same amount every year. Take a residential rental with a $270,000 depreciable basis. Divide by 27.5 years and you get $9,818 per year. Simple, and easy to audit.
The math is straightforward, but timing matters. A property placed in service in January gets nearly a full year's deduction; one placed in December gets about 0.5 months. For large acquisitions, timing the closing and tenancy can mean tens of thousands in tax deductions.
“It’s a (tax) Trap!”
When you sell, all depreciation claimed is recaptured and taxed. For residential rentals, depreciation recapture is taxed at a maximum 25 percent rate. The rate is better than ordinary income but worse than long-term capital gains (15-20 percent). Personal property and depreciation recapture at ordinary rates up to 37 percent.
Example: You buy a $500,000 rental ($100,000 land value). Over 10 years, claim $145,000 depreciation and then sell for $650,000. Your $150,000 gain includes $145,000 recaptured at up to 25 percent, plus $5,000 long-term capital gain. The deductions saved taxes during ownership—now you settle the bill… or not.
This is where the “using it like a sword” comment starts to make sense. There are a couple of ways to “or not” recapture.
A 1031 like-kind exchange defers (or completely eliminates) recapture. Sell a rental and reinvest the proceeds into another investment property within 180 days, and the gain—including recapture—defers to the next sale. Many investors build wealth by continually exchanging into larger properties, deferring recapture indefinitely.
Opportunity Zones offer permanent exclusion. Invest sale proceeds into a qualified Opportunity Zone property, hold for 10 years, and your deferred gain is permanently excluded from federal tax. The Bipartisan Build Back America Act made Opportunity Zone investing permanent (effective Jan. 1, 2027), giving investors a stable long-term tool.
State vs Federal Rules
California conformed to the IRC as of January 1, 2025. But when Congress passed the One Big Beautiful Bill Act in July 2025—reinstating 100 percent bonus depreciation and expanding Section 179 expensing—California did not adopt those changes. California taxpayers now claim large federal bonus deductions but must add them back on the state return, eliminating the state tax benefit.
Example: You claim $100,000 in federal bonus depreciation. That saves federal tax. But California doesn't allow it. You add the $100,000 back on your state return, creating a reconciling item. The extra accounting is painful, and many investors miss it entirely, creating audit exposure.
New York, Texas, and other high-tax states have similar decoupling provisions. Before you file large expensing or bonus-depreciation claims, check your state's conformity rules. Build separate federal-and-state tracking into your deal models. It takes an extra hour upfront and saves thousands in taxes and penalties.
NEXT STEPS
If you own rental real estate or are considering a purchase (call me), start with three steps: document your purchase price and land allocation, run a cost-segregation screening, and sit down with your tax person about bonus depreciation and Section 179. Keep placement-in-service evidence—invoices, tenant move-in dates, utility activation records—because auditors will ask.
And if you're in a high-tax state, model your federal and state results separately. Depreciation is too valuable a tool to leave on the table—but it's also complex enough that one mistake can cost you more than you saved.
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