If you are requested to provide "proof of income" or your HMRC tax calculation for a previous year(s) for a mortgage or loan application or maybe an insurance loss of earnings claim, you'll need to provide them with an SA302 form.

To download the SA302 form -

1. Go to the "Tax Return" tab

2. Next "Select the year"

3. You will see the green "Download SA302" button

NOTE: There are still a few lenders who only accept an SA302 from HMRC.
You cannot download it from your HMRC Gateway Account.

SOLUTION: Call HMRC on 0300 200 3310 and tell them... "you need an SA302 for (year), that you can't download it from your Gateway Account because you filed using "Recognised" commercial software and your lender won't accept it unless it comes from HMRC".

HMRC will post the SA302 to you within 5 working days.