Construction Payment Deadline Calculator (UK)
Free Construction Act payment deadline calculator. Calculate due dates, payment notice deadlines, and pay less notice deadlines for JCT, NEC, and bespoke contracts.
Payment Deadline Calculator
Enter your contract type and application date to calculate all Construction Act payment deadlines.
Payment Timeline
Application Date
Tue, 16 Dec 2025
1
Due Date
Tue, 30 Dec 2025
Payment is due from this date
2
Payment Notice Deadline
Sun, 4 Jan 2026
Last day to issue Payment Notice
3
Pay Less Notice Deadline
Tue, 6 Jan 2026
Last day to issue Pay Less Notice
Final Date for Payment
Tue, 13 Jan 2026
Payment must be made by this date
Due Date
Tue, 30 Dec 2025
Final Payment Date
Tue, 13 Jan 2026
These dates are calculated based on standard contract terms. Your specific contract may vary - always check your contract conditions. Weekends and bank holidays may affect deadlines depending on contract terms.
Frequently Asked Questions
Which contract types does this calculator support?
The calculator supports JCT contracts (Design and Build, Standard Building Contract), NEC3 and NEC4 contracts, and allows custom deadline entry for bespoke contracts. Select your contract type to see the relevant default timings.
What if my contract has different timings?
While the Construction Act sets minimum standards, contracts can (and often do) vary the specific timings. Use the "Custom" option to enter your contract's specific due date, notice, and final payment timings.
Can I export these deadlines to my calendar?
Yes. After calculating, use the "Add to Calendar" button to download an ICS file. This works with Outlook, Google Calendar, Apple Calendar, and most other calendar applications.
Are weekends and bank holidays accounted for?
The calculator shows calendar days as per Construction Act requirements. Your contract may specify that deadlines falling on non-working days move to the next working day - check your specific contract terms.