Payments & Deadlines

Payments & Deadlines guides for cis subcontractors.

When CIS Deductions Are Due: Monthly Deadlines Explained

Find out when CIS deductions are due to HMRC each month. Understand the 19th and 22nd deadlines, late payment penalties, and the quarterly payment option.

2 May 2026

6 min read

How to Claim Back CIS Deductions Through Self Assessment

Step-by-step guide to reclaiming overpaid CIS tax through Self Assessment. How to get your CIS refund from HMRC, avoid common mistakes, and key deadlines.

4 March 2026