Call HMRC if you’re finding it hard to repay - you may get more time. You’ll need your tax credit reference number.
0345 302 1429
Monday to Friday: 8am to 8pm
Saturday: 8am to 4pm
Sunday: 9am to 5pm
Closed bank holidays, Easter Sunday, Christmas Day, Boxing Day and New Year’s Day.
If you have already been contacted by HMRC or a debt collection agency acting on their behalf, contact them using the details they’ve given you.
If you can’t make a payment using any other method you can send a cheque with your payslip to HMRC.
You don’t need to include a street name, city name or PO box when writing to this address.