The IRS (https://www.irs.gov/taxtopics/tc704) does not allow depreciation for assets held for personal purposes, land, inventory, or property placed in service and disposed of in the same tax year. To be depreciable, an asset must be used in a business or income-producing activity, have a useful life exceeding one year, and wear out or become obsolete.
You can't claim depreciation on property held for personal purposes. If you use property, such as a car, for both business or investment and personal purposes, you can depreciate only the business or investment use portion. Land is never depreciable, although buildings and certain land improvements may be.
You can't depreciate assets that don't lose their value over time – or that you're not currently making use of to produce income. These include: Land. Collectibles like art, coins, or memorabilia.
Depreciation is not allowable for tax purposes because there are so many different ways that it can be worked out. For example on a reducing balance basis or a straight line basis and the percentage rate used can vary enormously.
Non-depreciable assets do not qualify for depreciation because they retain their value over time or are not used for income-generating activities. Land is considered a non-depreciable asset because it doesn't wear out or become obsolete.
Types of assets that do not depreciate
Examples of assets that do not depreciate include: land. trading stock items. most intangible assets (for example, trademarks as they are not intellectual property).
For example, depreciation cannot be claimed on land and goodwill. Land is excluded because it typically does not depreciate in value over time, unlike machinery or buildings. Similarly, goodwill, though an intangible asset, does not experience wear and tear and is therefore not eligible for this tax benefit.
Entertainment business expenses generally are not deductible. Commuting costs to your primary place of employment are not deductible. Charitable donations to certain organizations may not be tax deductible. Pledges and undocumented cash donations are not deductible.
Depreciation is considered a non-allowable expense for corporation tax purposes because it's subjective and could be manipulated. Instead of allowing depreciation tax deductions, HMRC provides capital allowances as a standardised alternative.
three-year property (including tractors, certain manufacturing tools, and some livestock) five-year property (including computers, office equipment, cars, light trucks, and assets used in construction) seven-year property (including office furniture, appliances, and property that hasn't been placed in another category)
Examples of Non-Depreciated Assets
Land. Investments and other intangible assets. This could refer to stocks, bonds, franchises, goodwill, or agreements not to compete. Collectibles, such as coins, cards, and similar memorabilia.
The lists of things that do not depreciate but increase in value are antique artifacts, gold, diamond, land and rubies. These things do not depreciate as they are scarce and are available in limited quantities.
The four common types of depreciation methods used in accounting are Straight-Line, Double Declining Balance, Units of Production, and Sum-of-the-Years'-Digits, each spreading an asset's cost differently over its useful life to reflect usage or decline in value, with Straight-Line being the simplest and most common.
Expensing an item may bring in more money in the short term, but once you have expensed it, it does not qualify for write-offs on future tax returns. Depreciating an asset may result in less money upfront, but could result in fewer taxes owed in the future.
In other words, you may offset rental income and lower your taxable income by deducting several rental expenses, not the least of which is depreciation. If, for example, you make $10,000 in rent and claim $5,000 in depreciation for the year, you may offset half of the rental income.
Many business expenses are 100% deductible, including advertising, employee wages, rent, supplies, and certain business meals like company parties or meals for the public, while personal deductions like student loan interest or charitable donations (depending on the type) can also be fully deductible for individuals. The key is that the expense must be "ordinary and necessary" for your trade or business or meet specific IRS criteria, often differentiating from the 50% rule for client meals.
Disallowed Expenses
The IRS allows taxpayers to deduct up to $3,000 of realized investment losses ($1,500 if married filing separately) against ordinary income each year. This deduction applies only to losses in taxable investment accounts and must be realized by December 31st to count for that tax year.
The section 179 deduction allows taxpayers, other than trusts and estates, to elect to expense a specified amount of the cost of qualifying property purchased for use in a business. For tax years beginning in 2026 the maximum deduction is $2,560,000, (2025, the maximum deduction is $2,500,000).
To qualify as a capital improvement, the IRS states that the property must meet the following conditions: The improvement “substantially adds” value to your home. The improvement prolongs the useful life of the property. The improvement is permanent.
Summary Table of Key Section 179 Mistakes to Avoid: Expensing ineligible property (e.g., land, inherited/gifted assets, property from related parties). Exceeding annual dollar and investment limits. Ignoring the business income limitation.
OBBB Changes to Bonus Depreciation
The bonus depreciation rate for 2025 pre-OBBB was just 40%. The OBBB, however, permanently reinstated 100% bonus depreciation for qualified property acquired and placed in service after January 19, 2025. It also provided transition provisions.