The depreciation page estimates book value after time passes
The Depreciation Calculator uses initial value, salvage value, useful life, elapsed years, and a selected method. It returns accumulated depreciation and remaining book value.
Initial value is the depreciable starting point
Enter the cost or value being depreciated. In accounting and tax work, the correct basis can include or exclude different items depending on the rules being followed.
Salvage value creates the floor
The calculator does not depreciate below salvage value. Salvage represents the expected value left at the end of useful life.
Useful life controls the annual pace
Useful life is the number of years over which the asset is expected to provide service. A shorter useful life creates faster depreciation.
Elapsed years asks how far into the schedule you are
The calculator compares elapsed years with useful life and rejects a value that runs beyond the useful life. This keeps the estimate inside the intended schedule.
Straight-line spreads depreciation evenly
Straight-line depreciation subtracts salvage value from initial value and divides the result by useful life. The same annual depreciation amount is used until the salvage floor is reached.
Double declining spends more depreciation early
The double-declining mode applies an accelerated rate to book value. Early years carry larger depreciation charges than later years.
The local declining method can switch to straight-line
The solver compares declining-balance depreciation with straight-line on the remaining value and switches when straight-line gives a higher charge.
IRS Publication 946 covers tax depreciation details
IRS Publication 946 explains recovering the cost of business or income-producing property through depreciation deductions. This calculator is only a simplified math tool.
Tax depreciation may use rules not shown here
MACRS classes, conventions, Section 179, bonus depreciation, listed property, and business-use percentages can change tax results. Those rules are not modeled by the simple fields.
Book value is not market value
An asset can sell for more or less than its book value. The calculator estimates accounting value under a method, not a buyer actual offer.
Vehicle value comparisons can connect to leasing
For a lease payment built around residual value and money factor, the Auto Lease Calculator is the related vehicle page.
Investment return pages answer a different question
Depreciation tracks value reduction. The Average Return Calculator looks at growth from beginning value to ending value.
Business profit should include more than depreciation
The Margin Calculator can examine cost, selling price, profit, margin, and markup when the question is pricing rather than asset value.
Partial years are simplified
The straight-line mode can accept elapsed years as a number, but real tax and accounting schedules may use conventions for placed-in-service dates.
Salvage value must be lower than initial value
The calculator rejects a salvage value that is equal to or above the initial value. Depreciation needs a positive amount to allocate.
Accumulated depreciation is the total used so far
Accumulated depreciation equals initial value minus remaining book value. It shows how much value has already been recognized as depreciation.
Last-year depreciation can be smaller
The declining mode limits depreciation so book value does not fall below salvage value. That can make the final charge smaller than a normal year.
Financial statements and tax returns may differ
A business may use one depreciation method for books and another method for tax reporting. Do not assume this page matches both.
Repairs are not capital improvements automatically
Some spending is expensed, and some is capitalized. Whether a cost enters the depreciable basis depends on accounting and tax rules outside this calculator.
Land is usually not depreciated
For real estate, land and building values are commonly separated because land is not depreciated in ordinary tax depreciation. This page does not split property components.
Disposals can create gain or loss
Selling or scrapping an asset can require comparing sale proceeds with adjusted basis. The calculator stops at book value and accumulated depreciation.
Leasehold improvements can have special lives
Improvements to rented property may not use the same useful life as equipment. Use the life required by the accounting rule or tax guidance being followed.
The method should be chosen before the result is read
Straight-line and double-declining can give very different book values in early years. Select the method that matches the intended report.
Depreciation does not measure cash leaving today
The cash purchase may have happened earlier, while depreciation spreads cost across time. That difference matters when reading profit and cash flow.
Asset records should support the inputs
Save purchase date, placed-in-service date, cost basis, salvage value, useful life, method, elapsed years, and calculation date with the result.
Small business tax choices need professional review
Depreciation elections can affect taxable income now and later. Use current IRS publications, accounting records, and tax advice before filing.
The cleanest use is a simple asset schedule check
When a user needs quick straight-line or double-declining book value, this page is a useful estimate. It is not a complete depreciation system.
Recalculate after basis or life changes
A revised cost basis, impairment, improvement, salvage estimate, or useful life changes the schedule. Update the inputs when the asset record changes.
The final number should match the accounting purpose
A management estimate, tax worksheet, audit schedule, and resale discussion may all need different treatment. Use the calculator result only for the purpose it fits.