Payment date calculator

How to Use This Calculator

Identify the valuation or relevant date first. Select the signed-contract basis when the agreed payment timetable applies and enter its periods. Use fallback values only after checking whether they apply. Keep the application date, notice periods and counting basis visible with the result.

Worked Example

With an illustrative valuation date and application date of 1 October 2026, the example periods give a due date of 8 October, a payment-notice deadline of 13 October, a pay-less deadline of 18 October and a final payment date of 25 October. The signed contract determines the actual periods and counting rules.

Before You Use the Result

A calculated date does not test service, authority, notice content or amendments. Compare the result with the project timetable and record the source of each period.

For a project that needs a wider review, explore QSEC valuation and payment support alongside The Subbie QS support.

Return to the full QS tools library for related calculators. You can also read about our payment application support or use the free QS templates to organise the underlying records.

Use The Working Sheet For This Task

Record the notice dates, owner, service route and proof required by your signed subcontract.

Download the Notice & Deadline Register (Excel)

Each Excel link takes you to the matching sheet preview. Enter your work email to download, replace the example entries and start using the file on your job. Marketing is optional.