Depreciation Calculator | Free Tax Tool by Inkle

Depreciation Calculator for Startups | Inkle

Business Asset
Depreciation Calculator

Enter what you bought and get an instant
estimate of your tax deduction.

Asset type

IRS Pub 946 useful life: 5 years (GDS) · ADS: 5 years

Purchase price ($)

Purchase month & year (month optional unless convention applies)

▸ Advanced options

Half-year convention (default)

All assets treated as placed in service after the midpoint of the tax year (§168(d)(1)). Overridden by mid-quarter or mid-month below.

Depreciation method (GDS default)

Per IRS Pub 946. DB methods automatically switch to straight-line in the year SL produces a larger deduction.

Elect out of bonus depreciation

Skip the Special Depreciation Allowance for this asset class (§168(k)(7))

Apply mid-quarter convention

Use if more than 40% of all year's depreciable assets were placed in service in Q4

Apply mid-month convention

Applies to residential rental, nonresidential real property, and railroad grading/tunnel bore (§168(d)(2))

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Bought multiple asset types? You can add more after calculating the first one.

Which year do you want to optimize for?

Estimates based on IRS Publication 946 (2025). For informational use only — not tax advice.