Which method for taxes?

Depends on jurisdiction and asset class. US business assets often use MACRS.

Depends on jurisdiction and asset class. US business assets often use MACRS.

Other Finance

Depreciation Calculator

Calculate straight-line and declining-balance depreciation.

Asset Cost

Salvage Value

Useful Life

$$\text{SL} \;=\; \frac{\text{Cost}-\text{Salvage}}{\text{Life}},\qquad \text{DDB}_1 \;=\; \text{Cost}\cdot\frac{2}{\text{Life}}$$

Where

SLstraight-line depreciation

DDBdouble-declining balance

Costasset cost

Salvageresidual value

Lifeuseful life in years