Capital Gains Tax: enquiries
Call or write to HMRC for help with Capital Gains Tax, including general enquiries and how to make payments.
Phone
Call HMRC for general enquiries about Capital Gains Tax. You will need your Self Assessment Unique Taxpayer Reference.
HMRC does not take payments on this line.
We recommend that you pay Capital Gains Tax online. There are different ways to do this. If you reported:
- UK property disposals or Real Time Transactions (RTT), find out how to pay your Capital Gains Tax
- capital gains in your Self Assessment tax return, find out how to pay your Self Assessment tax bill
These guides explain how to make payments by post if you cannot pay online.
You can also find out information in your personal tax account.
Before you call
This helpline may ask you some security questions. Make sure your personal details and address are up to date in your personal tax account or you could fail telephone security. If you do not have a personal tax account, you can create one before you check your details.
Telephone: 0300 200 3300
Textphone: 0300 200 3319
Outside UK: +44 135 535 9022
Opening times: Monday to Friday, 8am to 6pm. Closed bank holidays.
Post
General enquiries
Write to HMRC for help with general Capital Gains Tax queries.
You do not need to include a street name, city name or PO box when writing to this address.
Couriers should use a different address.
Capital Gains Tax Queries
HM Revenue and Customs
BX9 1AS
United Kingdom
Payments
We recommend that you pay Capital Gains Tax online. There are different ways to do this.
If you reported:
- UK property disposals or Real Time Transactions (RTT), find out how to pay your Capital Gains Tax
- capital gains in your Self Assessment tax return, find out how to pay your Self Assessment tax bill
These guides explain how to make payments by post, if you cannot pay online.
Related content
Capital Gains Tax: what you pay it on, rates and allowances
Pay your Self Assessment tax bill
If you cannot pay your tax bill on time