Depreciation Schedule Calculator (Straight-Line & Double-Declining Balance)

Straight-line depreciation charges the same amount every year: (cost − salvage value) ÷ useful life. Double-declining balance instead charges a constant rate — 2 ÷ useful life, twice the straight-line rate — of whatever book value remains each year, so it front-loads more depreciation into the early years and less into later ones, the standard 'accelerated depreciation' approach. Neither method depreciates the asset below its salvage value; double-declining balance's final year is capped at exactly enough to reach salvage value, since applying the uncapped rate alone never quite gets there.

Both methods depreciate the exact same total amount over the asset's full useful life (cost − salvage value) — they only differ in how that total is spread across the years. The chart below shows that shifting split: each year's bar is the same total height (the original cost), divided between book value still remaining and depreciation accumulated so far.