The types of business property recognized under federal tax law fall into four working categories: tangible personal property, real property, intangible assets, and mixed-use assets that serve both business and personal purposes. The category an asset belongs to determines how you deduct its cost, what you owe in tax when you sell it, and how much protection you have if the business is sued or falls into debt. Classifying each asset correctly matters at tax time, at sale, and any time a creditor comes looking.
Tangible Personal Property
Tangible personal property is the physical, movable equipment your business uses day to day: machinery, computers, office furniture, tools, vehicles, and inventory held for sale. These items can be relocated without damaging the structure around them, which is what separates them from buildings and land. Most fall under Section 1245 of the Internal Revenue Code, which governs how you recover their cost and what happens when you sell.1Office of the Law Revision Counsel. 26 USC 1245 – Gain From Dispositions of Certain Depreciable Property
You have two main tools for writing off these purchases faster than a standard depreciation schedule would allow.
Section 179 Expensing
Section 179 lets you deduct the full purchase price of qualifying equipment in the year you place it in service instead of spreading the cost across several years. The statutory cap is $2,500,000 per tax year, and the limit begins to phase out once your total qualifying purchases exceed $4,000,000.2Office of the Law Revision Counsel. 26 USC 179 – Election to Expense Certain Depreciable Business Assets Both figures are adjusted annually for inflation. The deduction also cannot exceed your taxable business income for the year; any unused portion carries forward.
Bonus Depreciation
Bonus depreciation under Section 168(k) is a separate accelerated write-off that applies to new and, in many cases, used property. After the One Big Beautiful Bill Act took effect in July 2025, the rate was permanently restored to 100 percent for qualifying property.3Office of the Law Revision Counsel. 26 USC 168 – Accelerated Cost Recovery System Qualifying property includes assets with a recovery period of 20 years or less, computer software, and certain film and theatrical productions. You can layer bonus depreciation with Section 179 or use it alone, depending on which gives you the better result.
Real Property
Real property is the land your business owns plus anything permanently attached to it: office buildings, warehouses, retail spaces, manufacturing facilities. Fixtures also count. These are items that started out movable but became part of the real estate through permanent installation, such as built-in HVAC systems, plumbing, and custom shelving that would damage the structure if removed.
Section 1250 governs depreciable real property, and the rules are slower than for equipment. Most nonresidential buildings are depreciated over 39 years using the straight-line method, so you deduct the same amount each year rather than front-loading.4Office of the Law Revision Counsel. 26 USC 1250 – Gain From Dispositions of Certain Depreciable Realty Owning real property also carries obligations outside the federal tax code, including local zoning compliance and annual property tax assessed on land and building value.
Qualified Improvement Property
Interior renovations to a nonresidential building, such as upgrading lighting, replacing flooring, or reconfiguring an office layout, may qualify as qualified improvement property (QIP). QIP has a 15-year recovery period rather than 39, and it is eligible for both Section 179 and bonus depreciation. The improvement must be made to the interior after the building was first placed in service, and it cannot enlarge the building, install an elevator or escalator, or alter the structural framework.
Intangible Business Assets
Intangible assets have no physical form but carry real value. This category includes patents on inventions, copyrights on creative works, trademarks that identify your brand, and trade secrets like proprietary formulas or customer lists. They can be bought, sold, or licensed for royalties.
Goodwill is another major intangible: the premium a business carries beyond its hard assets, reflecting factors like customer loyalty, brand reputation, and workforce quality. It usually appears on a balance sheet after an acquisition, when the purchase price exceeds the fair market value of the identifiable assets. Under Section 197, you amortize the cost of acquired intangibles, including goodwill, trademarks, customer lists, and non-compete agreements, evenly over 15 years.5Office of the Law Revision Counsel. 26 USC 197 – Amortization of Goodwill and Certain Other Intangibles
Intangibles also demand upkeep. Patents and trademarks are secured through federal filings with the United States Patent and Trademark Office (USPTO), and those rights weaken or expire without timely renewals. For trademarks, you must file a declaration of continued use between the fifth and sixth year after registration, then combined renewal and use declarations every ten years. As of 2026, the USPTO charges $325 per class for a use declaration and another $325 per class for a renewal filing, totaling $650 per class when filed together.6USPTO – United States Patent and Trademark Office. USPTO Fee Schedule Let a trademark lapse or fail to defend a patent and you can lose the exclusive rights entirely.
Mixed-Use Assets
Some assets do double duty. A car you drive to client meetings and to pick up your kids, or a room in your home that functions as your office, are the standard examples. You can deduct the business portion, but the rules on proving that split are strict.
Home Office Deduction
To deduct business use of your home, the space must be used exclusively and regularly as your principal place of business, as a location where you meet clients, or as a separate structure used in connection with your work.7Office of the Law Revision Counsel. 26 USC 280A – Disallowance of Certain Expenses in Connection With Business Use of Home “Exclusively” means the space cannot double as a guest bedroom or a play area. The simplified method lets you deduct $5 per square foot of dedicated office space, capped at 300 square feet, or $1,500 total.8Internal Revenue Service. Simplified Option for Home Office Deduction The regular method requires you to calculate the actual business-use percentage of your home and apply it to mortgage interest, insurance, utilities, and depreciation. It can yield a larger deduction but demands better records.
Vehicle Expenses
For a personal vehicle used in business, you can deduct either actual expenses (gas, insurance, repairs, depreciation) in proportion to business use, or take the IRS standard mileage rate. For 2026, that rate is 72.5 cents per mile driven for business.9Internal Revenue Service. IRS Sets 2026 Business Standard Mileage Rate at 72.5 Cents Per Mile, Up 2.5 Cents If you go with the standard mileage rate, you must elect it in the first year the vehicle is available for business use. For leased vehicles, whichever method you pick has to stay in place for the entire lease.
Vehicles, computers, and certain other assets that easily slip into personal use are treated as “listed property” under Section 280F. If business use drops to 50 percent or below, you lose accelerated depreciation and must switch to the straight-line method. You may also have to recapture excess depreciation from earlier years when business use was higher.10Office of the Law Revision Counsel. 26 USC 280F – Limitation on Depreciation for Luxury Automobiles and Limitation Where Certain Property Used for Personal Purposes
Penalties for Misclassifying Personal Expenses
Claiming personal expenses as business deductions is a common audit trigger. If the IRS finds you underpaid taxes through negligence or disregard of the rules, the standard accuracy-related penalty is 20 percent of the underpayment.11Office of the Law Revision Counsel. 26 USC 6662 – Imposition of Accuracy-Related Penalty on Underpayments That jumps to 40 percent for a gross valuation misstatement, like dramatically overstating a vehicle’s business-use percentage or inflating the value of donated property. Mileage logs, receipts, and calendars showing how and when each asset was used for business are the strongest defense in an audit.
Selling Business Property and Depreciation Recapture
When you sell business property for more than its depreciated value, the IRS makes you “recapture” some or all of the depreciation you previously deducted. That recaptured amount is taxed as ordinary income rather than at the lower capital gains rate, which can raise the tax bill significantly.
For Section 1245 assets, the rule is straightforward: any gain up to the total depreciation you claimed is taxed as ordinary income, and only gain beyond that is capital gain.1Office of the Law Revision Counsel. 26 USC 1245 – Gain From Dispositions of Certain Depreciable Property
Section 1250 real property works differently. Because nonresidential buildings depreciate on a straight-line schedule, there is usually no “excess” depreciation to recapture at ordinary rates. Instead, the depreciation-related gain is treated as unrecaptured Section 1250 gain and taxed at a maximum rate of 25 percent, higher than the standard long-term capital gains rates of 0, 15, or 20 percent but lower than ordinary income rates for most taxpayers.12Office of the Law Revision Counsel. 26 USC 1 – Tax Imposed
Sales, exchanges, and involuntary conversions of business property are reported on IRS Form 4797, which separates gains into ordinary income and capital gain components so each is taxed at the right rate.13Internal Revenue Service. About Form 4797, Sales of Business Property
How Ownership Structure Affects Liability
How you hold business property (personally, through an LLC, or inside a corporation) determines what creditors can reach if the business is sued or defaults on debt. Operating through an LLC legally separates business assets from your personal belongings. Creditors can pursue the LLC’s assets but generally cannot touch your home, personal savings, or other non-business property. That protection depends on treating the LLC as a genuinely separate entity. Mixing business and personal funds, skipping records, or operating without adequate capital can give a court grounds to disregard the structure and hold you personally liable.
Insurance is a second layer that matters for home-based operations. A standard homeowners policy typically excludes business liabilities and caps coverage on business equipment at low amounts, often $2,500 or less for equipment kept at home and as little as $250 for equipment off the premises. Running a business from your residence or storing inventory there is usually reason enough to look at a commercial property or business owner’s policy that closes those gaps.