In this section:
- Understanding and using Self Assessment Online
- Software you can use for your tax return
- List of commercial tax return software
- Self Assessment Online login page
- Help with using Self Assessment Online
Software you can use for your tax return
When you file online your figures are calculated automatically and you'll know right away what you owe or what is owed to you. You can use free HM Revenue & Customs (HMRC) Self Assessment Online software or commercial software (some are also free) and can send most tax returns online.
On this page:
- What's covered by the HMRC free online service
- What's covered by commercial software
- Tax returns you can't file online
- Before you can send us your tax return online
- Completing your online tax return in parts
- HMRC online support
What's covered by the HMRC free online service
You can send the main Self Assessment Tax Return (SA100) online free of charge using the HMRC online service. You can also use this service to send the following pages online - these support the main tax return:
- Employment
- Self-employment
- Partnership - to report your share of a partnership's profit or loss
- UK property
- Capital gains
- Foreign
As well as sending your tax return online you can view and/or amend your contact details online and use a secure email channel to ask HMRC a question. You can also see your latest Statement of Account and account history online to find out:
- what you owe, what you've paid and any repayments due
- when your tax return was received
- when your next tax return is due
Bear in mind that the HMRC software only covers the tax return and pages listed above.
If you want to send other tax returns online - for example the Trust and Estates Tax Return or the Partnership Return - or other supplementary pages, you'll need to use commercial software.
Find out how to start using the HMRC Self Assessment Online filing service
Read more about filing Trust and Estates tax returns
What's covered by commercial software
You can send the following tax returns online using software from commercial suppliers (some of this software is free and some you have to pay for):
- SA100 - Tax Return (for individuals - including those who are self-employed)
- SA800 - Partnership Tax Return
- SA900 - Trust and Estate Tax Return
The commercial software products also allow you to send some or all of the following pages online - these support the main tax return:
- Employment
- Self-employment
- Partnership - to report your share of a partnership's profit or loss
- UK property
- Additional information
- Foreign income
- Trust income
- Capital gains
- Non-residence
- Minister of religion
- Lloyd's underwriters
Follow the link below for a list of commercial software. HMRC has tested each of these products to make sure that they can be successfully sent to HMRC over the Internet.
HMRC doesn't recommend any one particular product or service over another, so you'll have to choose for yourself. When you compare suppliers, you could look at things such as their extra features, ease of use and quality of support.
List of commercial software for the latest Self Assessment tax return
Tax returns you can't file online
There is currently no software available for filing the following returns:- SA700 - Non-resident Company Tax Return
- SA970 - Trustees of Registered Pension Schemes
You have to send these as paper returns. Because there's no online service available, the deadline for these paper returns is the same as for online returns - 31 January.
Self Assessment deadlines - find out more
Read more about tax returns for trustees of registered pensions schemes
Before you can send HMRC your tax return online
Whichever software you choose, before you can send your tax return online, you'll need to register to use the online service - allow at least seven days to do this. You'll need to have your Unique Taxpayer Reference (UTR) to hand (find this on your tax return or Statement of Account) plus either your National Insurance number or your postcode.
Self Assessment online - register as a new user
Read more about using Self Assessment Online before registering
Completing your online tax return in parts
You don't have to fill in your online tax return all in one go. You can fill in part of it then save it and come back later. You can also print it out if you want to.
If you use HMRC software, your work is saved securely as you work. Only you will be able to get at it, no one else (inside or outside HMRC) can look at your return until you've submitted it.
If you use commercial software, you may be able to save your work on your own computer. If this feature's important to you, check that it's available before you choose your software.
Support for HMRC online service
The Online Services Helpdesk supports the HMRC online software (but not software from other suppliers).
