self-assessment

Self Assessment Helpline Phone Number

0843 178 4198

HMRC uses the Self Assessment system to collect Income Tax. While HMRC automatically deducts tax from wages, pensions, and savings, people with other income must report it to HMRC. To do this and pay any additional tax you owe, you need to fill out a tax return form.

If you don’t complete a Self Assessment return for each tax year before the deadline, you’ll get a penalty fine. This penalty starts at £100 for delays of up to 3 months but increases the later you leave it. HMRC could also charge you interest on late payments.

To avoid extra charges, call HMRC on 0843 178 4198 for help with Self Assessment tax returns.

Self Assessment Contact Numbers

You can contact HMRC regarding Self Assessment on any of the helpline numbers below during opening hours. Otherwise, these phone lines close on Christmas Day, Boxing Day, New Year’s Day and Easter Sunday. Call the general enquiries helpline if you aren’t sure what you need to do.

Department
Phone Number
Opening Times
General Enquiries
0843 178 4198
(Mon-Fri) 8am – 8pm
(Sat) 8am – 4pm
(Sun) 9am – 5pm
Online Services
0843 178 4199
(Mon-Fri) 8am – 8pm
(Sat) 8am – 4pm
(Sun) 9am – 5pm
Payments
0843 178 4200
(Mon-Fri) 8am – 8pm
(Sat) 8am – 4pm
(Sun) 9am – 5pm
Update Information
0843 178 4201
(Mon-Fri) 8am – 8pm
(Sat) 8am – 4pm
(Sun) 9am – 5pm
Order Forms
0843 178 4202
(Mon-Fri) 8am – 8pm
(Sat) 8am – 4pm
(Sun) Closed
Complaints
0843 178 4203
(Mon-Fri) 8am – 8pm
(Sat) 8am – 4pm
(Sun) 9am – 5pm

General Enquiries

If you have any questions about how to fill out a Self Assessment tax return form, call 0843 178 4198. HMRC will provide information and advice on the best way to file your tax return according to your circumstances. If you miss the deadline for that tax year by more than 3 months, you can ask for an estimate on the penalty charge. You can also enquire about appointing an agent, trusted helper, or intermediary to handle your tax returns on your behalf.

Online Services

Most people will use the online Self Assessment services for their tax return as they are much faster. However, sometimes you may experience issues with the website. Call 0843 178 4199 for assistance with filing your tax return online, or accessing your account. When you register online, you should allow a few days for HMRC to send you a letter with access instructions.

Payments

Call 0843 178 4200 for help with how to make payments on your tax return. You’ll need your Self Assessment reference number to hand when you call. HMRC does not take payments over the phone, but they can advise you on how to pay. You can ask about payments on account or how to make a payment via post if you can’t pay any another way.

Update Information

HMRC will only contact you about confidential matters like tax by phone or post. If you have legally changed your name or moved to a new address, you need to report it to HMRC. Call 0843 178 4201 to update your personal information. You also need to call if you stop self-employment, as it will affect whether you need to complete a tax return.

Order Forms

You can download and print out tax return forms online from the HMRC website. If you don’t have a printer, call 0843 178 4202 to ask HMRC to send the forms to you. You can only order up to 10 blank forms of each type, but you should only need one for each tax year. Please be aware that HMRC no longer sends blank tax forms in bulk to tax agents.

Complaints

To make a complaint about the Self Assessment service HMRC provides, call 0843 178 4203. If you feel that the service is too slow or too difficult, you can call to let HMRC know. Ask how to appeal against a tax decision if you think that HMRC was unfair. When you receive a penalty charge, you can also appeal against it if you have a reasonable excuse.

Other Ways to Contact HMRC

If you need to get in touch with HMRC about Self Assessment other than on the phone, here’s how you can do it. If you only need general advice, contact @HMRCCustomers on Twitter. They are available until 10pm every day. Bear in mind that they can’t discuss your specific case with you, so don’t provide personal details.

If you’d prefer to write a letter to HMRC, you can send it to one of the following addresses. When you send your tax return by post, you should use the address on your tax documentation. Call the helpline for assistance with where to send your paper forms.

Department
Address
Self Assessment Queries
Self Assessment
HM Revenue and Customs
BX9 1AS
United Kingdom
Complaints
PAYE and Self Assessment Complaints
HM Revenue and Customs
BX9 1AB
United Kingdom