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Depreciation Calculator

Straight line, declining balance and sum-of-years schedules.

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YearDepreciationAccumulatedBook value

All four methods compared

Every method depreciates the same total over the same life. Only the timing differs.

YearStraight lineDeclining balanceSum of years

First year depreciation

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Total depreciable amount—
Annual rate—
Book value after year 1—
Book value at half life—
Front-loaded share—
Final book value—

Quick Tool Overview

The Depreciation Calculator produces a year-by-year schedule under four methods — straight line, double declining balance, sum-of-years-digits and units of production — tracking expense, accumulated depreciation and book value throughout.

What it does
Builds depreciation schedules under four different methods
You give it
Asset cost, salvage value, useful life and a method
You get back
Annual expense, accumulated depreciation and book value
Best for
Accounting, tax planning and asset budgeting
Calculators Free, unlimited use No sign-up Runs in your browser

About the Depreciation Calculator

Enter the asset cost, its salvage value and its useful life to produce a full depreciation schedule. Four methods are supported: straight line, double declining balance, sum-of-years-digits and units of production, with the book value tracked each year.

The method changes the timing rather than the total. Every approach depreciates the same amount over the same life; what differs is how much falls in each year. Straight line spreads it evenly. Declining balance and sum-of-years front-load it, which better matches assets that lose most of their value early and defers tax in the process. Units of production ties it to actual usage, which suits machinery. The calculator shows all four side by side so the choice is informed.

Key features of the Depreciation Calculator

Four methods side by side

Straight line, DDB, sum-of-years-digits and units of production, so the choice can be compared rather than assumed.

Timing, not total

Every method depreciates the same amount over the same life; what changes is which year the expense falls in.

Book value tracked

The carrying amount each year, which is what the balance sheet reports.

Salvage floor respected

Accelerated methods stop at salvage value rather than depreciating past it.

Units of production

Ties depreciation to actual usage, which suits machinery where output varies year to year.

How to use the Depreciation Calculator

  1. 1

    Enter the asset cost

    The purchase price including anything needed to put the asset into service.

  2. 2

    Set salvage value and life

    What it will be worth at the end, and how many years it will be used for.

  3. 3

    Choose a method

    Straight line, double declining balance, sum-of-years-digits or units of production.

  4. 4

    Read the schedule

    Depreciation expense, accumulated depreciation and book value for every year.

Frequently asked questions

Cost minus salvage value, divided by useful life, charged equally each year. It is the simplest method and the most common where an asset delivers value evenly across its life.

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