Home Renovation Budget Calculator

Enter your own estimates in one currency. Enter 0 explicitly for any category, contingency, or tax that does not apply.

This arithmetic tool uses only your estimates. It supplies no regional prices, contractor quotes, or construction advice.

The tax percentage is entirely user supplied, with no regional default. This tool does not determine tax liability or provide tax advice.

Core budget = category sum. Contingency = core budget × contingency percentage. Pre-tax subtotal = core budget + contingency. Tax = pre-tax subtotal × user tax percentage. Total after tax = pre-tax subtotal + tax.

Enter an amount for every category and both percentages, using 0 where applicable.

Core budget

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Contingency amount

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Contingency-inclusive subtotal before tax

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Tax amount

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Total after tax

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The calculation runs in this browser; entries are not uploaded or saved.