A clearer view of your numbers
Retainage Calculator
Calculate withheld retainage, currently payable amount and full release from one payment or cumulative amount.
Browser-local calculations · No login · No financial values sent
Your inputs
01 / EnterThese are editable examples, not recommended rates. Enter your own numbers.
Your result
02 / UnderstandLoading the example calculation…
Show the math
Money inputs accept at most two decimal places. Percentage inputs accept at most six. Percentage amounts round to the nearest cent, ties upward; allocations use exact integer cents.
What this means
Retainage reduces the amount currently payable. Full release later pays the withheld amount, bringing the combined total back to the base.
Worked example
$10,000 at 10% withholds $1,000 and leaves $9,000 currently payable. A full $1,000 release brings the combined total to $10,000.
How the math works
Withheld = base × retainage/100, rounded to nearest cent, ties upward. Currently payable = base − withheld. Full release = withheld.
About this estimate
One payment or cumulative base, without prior releases or adjustments. No release date, legal entitlement or prescribed retainage rate. Requirements depend on your contract and applicable law.
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Formula v1.0.0 · Reviewed · Tool ID: retainage