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Budget variance calculator

Actual minus budget, the percentage of absolute budget and whether the difference is favourable or unfavourable.

Published 20 September 2026. Last reviewed 27 September 2026.

Budget variance inputs
Enter the inputs and calculate.

Sources applied

  • Formulas: difference = actual − budget; percentage = difference / absolute budget × 100. Favourable means a positive income difference or a negative cost difference.
  • Figures: supplied by you. No statutory rate or threshold is applied. No external source is applied; the favourability convention is the usual management-accounting one.

How it works

Difference = actual − budget. Percentage = difference / absolute budget × 100. A zero budget has no percentage comparison. Positive income differences are favourable; positive cost differences are unfavourable. Explain causes from the records.

Budget explanation checklist

Monthly Close Controls compares trial balance CSVs and lists material movements for review.

One of the nine business calculators. Calculations run in this browser. The calculator code does not send your inputs to a server or save them automatically. To check, disconnect from the internet once the page has loaded, then calculate.

Planning estimates in AUD. Confirm tax treatment, liability amounts and dates separately. Amounts round to the nearest cent, with exact half cents rounded up; percentages round to two decimal places, with exact halves rounded away from zero.

Written by Ryan Duguid in his own time and on his own equipment. He is a Provisional CA ANZ Member. CA ANZ has not endorsed this site or its tools.

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Ryan Duguid is not a registered tax agent or BAS agent. Nothing here is tax, legal or financial advice. Computational outputs are review aids for a qualified professional, not compliance determinations, and lodgement decisions stay with a human.

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Ryan Duguid, ABN 59 834 031 764

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