First-year bonus depreciation on an asset, 2021

This works out one number from the Bonus Depreciation Percentage figures published for 2021. Every amount it uses is below, with the document it was read from. What you enter is your own: this site has no way to check it, and the answer it produces is not a published figure.

Special depreciation allowance100%

Effective 2021-01-01Source: 2021 Instructions for Form 4562 (IRS)Verified 2026-08-29

How it is worked out

The published percentage of the amount you enter, rounded to the nearest cent.

It uses Special depreciation allowance, 100%, published above.

Figures in this colour are computed from the amounts above. They are not published figures and no document states them.

Work it out

The live calculator needs JavaScript. The table below covers common amounts and is computed the same way.

Worked out for common amounts

The depreciable basis of the propertyResult
10,000$10,000
50,000$50,000
250,000$250,000
1,000,000$1,000,000
How each figure was verified

Each number below was read from a stored copy of the document named beside it, and checked to occur word for word in the quoted sentence. The digest is of that stored text.

2021 Instructions for Form 4562 (IRS)

Special depreciation allowance
is eligible for a special depreciation allowance of 100% of the depreciable basis of the property.
  • Fetched 2026-08-29T03:09:53.144Z
  • Verified 2026-08-29
  • Stored text sha256 f7aea158980a4bf25ce54dfd6dee661536f3cb375daf2f3a6e1ca2e5355c841c

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