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Asset Depreciation Calculator

Calculate straight-line, declining balance, or units-of-production depreciation — with a full year-by-year schedule you can export as CSV.

Asset details

Total acquisition cost.
£
Estimated value at end of life.
£
How many years to depreciate.
yrs
All calculations run locally. CSV export downloads directly to your device.

Production line conveyor

Live
Year 1 depreciation
£5,000
Total depreciation
£40,000
Residual value
£5,000
Useful life
8 yrs
Annual depreciation
Track assets in AssetOS

Full depreciation schedule

Year
Depreciation
Accumulated
Book value
1
£5,000
£5,000
£40,000
2
£5,000
£10,000
£35,000
3
£5,000
£15,000
£30,000
4
£5,000
£20,000
£25,000
5
£5,000
£25,000
£20,000
6
£5,000
£30,000
£15,000
7
£5,000
£35,000
£10,000
8
£5,000
£40,000
£5,000
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Asset Depreciation · FAQ

What is the difference between straight-line and declining balance depreciation?+

Straight-line depreciation deducts the same fixed amount each year. Declining balance (reducing balance) applies a fixed percentage to the remaining book value — front-loading depreciation in early years. Declining balance better reflects how most assets actually lose value.

What depreciation method does HMRC use for UK businesses?+

HMRC uses capital allowances rather than accounting depreciation for tax purposes. The main rate is 18% reducing balance for most plant and machinery, or 6% for special rate assets. Your accounts can use any method; the tax calculation is done separately using capital allowance rules.

When should I use units-of-production depreciation?+

Units-of-production ties depreciation to actual usage rather than time — useful when wear correlates to output more than years: mining equipment, printing presses, vehicles measured by mileage, or production machinery measured by cycles. It is more accurate but requires tracking actual usage units.

Can I export the depreciation schedule?+

Yes — the calculator exports a full year-by-year depreciation schedule as CSV. Most accountants and finance teams can import this directly into accounting software such as Xero, QuickBooks, or Sage.