Agent Dedicated Line: tax credits
Phone
Call HMRC for help with Tax Credits if you’re formally authorised to act on behalf of a client.
Telephone:
0345 300 3943
Opening times:
Our phone line opening hours are:
Monday to Friday: 8am to 6pm
Closed on Saturdays, Sundays and bank holidays.
You can also find out information in:
- the official HMRC app
- your personal tax account or business tax account using HMRC online services