Declining balance and units-of-production front-load or vary depreciation; this tool uses straight-line.

It matches an asset's expense to the periods it helps generate revenue.

What is salvage value?

The estimated resale or scrap value at the end of the asset's useful life.

Why depreciate at all?

It spreads a big purchase across the years it helps generate revenue.

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Free straight-line depreciation calculator. Find annual and monthly depreciation of an asset.

Straight-line depreciation spreads an asset's cost evenly over its useful life: (cost − salvage) ÷ life.

Straight-line depreciation = (cost − salvage value) ÷ useful life, spreading the expense evenly each year.

A $30,000 asset with $5,000 salvage over 5 years depreciates $5,000 a year, about $417 a month.

Other methods?: Declining balance and units-of-production front-load or vary depreciation; this tool uses straight-line.
Why depreciate?: It matches an asset's expense to the periods it helps generate revenue.
What is salvage value?: The estimated resale or scrap value at the end of the asset's useful life.
Why depreciate at all?: It spreads a big purchase across the years it helps generate revenue.