Retention Calculator
Enter the contract terms exactly as agreed. The calculator does not assume a universal retention or release percentage.
A QUICK WALKTHROUGH
How to use this tool
- Enter the contract amount, retention percentage, practical-completion release percentage, and defect period.
- Calculate the retained amount and the two release amounts.
- Use the time split as a schedule reference; the contract terms control.
Terms drive the result
Retention is contract-specific. This tool accepts any retention percentage from 0% to 100% and any practical-completion release percentage from 0% to 100%; it does not assume 5% retention or a 50/50 split.
Time split
The first release is shown at practical completion and the final remainder at the end of the stated defect period. This is a timing calculation only and does not interpret a contract or legal entitlement.
GOOD TO KNOW
Common questions
Can retention be zero?
Yes. Enter 0 for a valid zero retention percentage.
Does the tool apply interest, tax, or deductions?
No. It calculates only the stated contract amount and percentages.
Who decides the release terms?
The signed contract and the parties responsible for administering it control.