CIS Answer Page

CIS Registered But Still Deducted 30%: Fix Guide

Being CIS registered does not always guarantee 20% deductions. If contractor verification fails, 30% can still be applied.

Quick Answer

The fix is usually administrative: check registration details, contractor verification response, and consistency of name/UTR data used in payroll.

Coggeshall subcontractor corrected verification mismatch and stopped ongoing 30% deductions.
Colchester client recovered extra deductions after assembling a clean monthly evidence trail.

I am CIS registered, why did contractor still deduct 30%?

Usually because verification data did not match HMRC records at payroll stage.

Can this be corrected mid-year?

Yes. Contractors can re-verify and apply correct rates going forward once resolved.

Do I need to contact HMRC directly first?

Sometimes yes, but first confirm the exact details used during verification.

Will I recover extra deductions already taken?

In most cases yes, through proper year-end filing or refund claim process.

How do I prove over-deduction?

Use statement totals, payment records and a month-by-month deduction reconciliation.

Should I stop work until it is fixed?

Usually no. Keep records clean and correct the status while work continues.

Can you deal with this remotely?

Yes. We support CIS verification and claim workflows UK-wide.

What is the fastest route now?

Book a consultation and we map the correction sequence for your contractor setup.

Follow the high-priority CIS route from cleanup to filing stability.