Depreciation Calculator – Straight-Line, Declining Balance & SYD

Depreciation is an accounting method that spreads an asset's cost across its useful life, reflecting its decline in value. It's a non-cash expense used in financial reporting and tax calculations to match asset costs with the revenue they generate.

Depreciation reduces taxable income, lowers tax liability, and provides accurate financial reporting. It's essential for maintaining balance sheets, calculating profit/loss correctly, and claiming tax deductions for business assets.

Straight-line depreciates assets equally each year, making it simple and consistent. Declining balance uses an accelerated rate applied to decreasing book value, resulting in higher depreciation early and lower later—useful for assets losing value quickly.

Use accelerated depreciation (declining balance, MACRS, sum-of-years-digits) for vehicles, technology, and equipment that lose value rapidly. It maximizes early-year tax deductions. Straight-line is better for real estate and long-term assets with stable value decline.

Salvage value is the estimated resale or scrap value at the end of an asset's useful life. It matters because depreciation = (Asset Cost − Salvage Value) ÷ Years. A higher salvage value reduces total depreciation, affecting annual deductions and tax liability.

Useful life depends on asset type and IRS standards: vehicles (5-7 years), equipment (7-10 years), buildings (27.5-39 years). Consult IRS Publication 946 or your tax advisor for your specific situation and industry.

Depreciation is a non-cash deduction that reduces taxable income. For example, $5,000 depreciation reduces taxable income by $5,000. At 25% tax rate, this saves $1,250 in taxes—even though no cash left your account.

No. You can only depreciate business or investment assets. Personal-use property (primary home, personal vehicle, personal equipment) is not tax-deductible. Mixed-use assets must be allocated—only the business portion is deductible.

Accumulated depreciation is the total depreciation claimed over all years. Book Value = Asset Cost − Accumulated Depreciation. For a $50,000 asset with $15,000 accumulated depreciation after 3 years, book value = $35,000.

Book Value is calculated using depreciation: Asset Cost − Accumulated Depreciation. Market Value is what you could sell it for now. They often differ significantly—a $50,000 car may have $20,000 book value but only $15,000 market value.

Generally no. Once chosen, depreciation method must be consistent. Changing methods requires IRS Form 3115 (Application for Change in Accounting Method) and may incur penalties. Consult your tax advisor before considering a change.

MACRS (Modified Accelerated Cost Recovery System) is the IRS standard for US tax depreciation. It uses accelerated methods with specific recovery periods by asset class. Most businesses must use MACRS for tax purposes, not straight-line.

Section 179 allows business owners to immediately deduct qualified asset purchases (up to annual limits) instead of depreciation over years. For 2024, up to $1.22M can be expensed immediately. Consult your tax advisor on eligibility.

Once book value reaches salvage value, depreciation stops. The asset remains on your balance sheet at salvage value. If sold, the gain/loss = Sale Price − Book Value. If scrapped, you may record a loss if salvage value wasn't realized.

For tax purposes, use IRS conventions: Half-year (assume 6-month ownership) or mid-quarter (based on quarter of purchase). For example, an asset purchased July 1 typically qualifies for only half a year's depreciation in Year 1.

No. Land is not depreciable because it doesn't wear out or lose usable value. However, buildings and improvements on land are depreciable. When purchasing property, allocate cost between land (non-depreciable) and building (depreciable).

Keep detailed records: asset description, purchase date, cost, salvage value, useful life, depreciation method, annual depreciation, accumulated depreciation, and disposal date/proceeds. Maintain for at least 7 years for tax audit protection.

Depreciation Expense appears on the Income Statement, reducing net income. Accumulated Depreciation (contra-asset account) appears on the Balance Sheet, reducing asset value. Both affect net income, retained earnings, and asset valuations.