Submit your tax return

How to submit your tax return while using Making Tax Digital for Income Tax.

Once you have made all the adjustments to your self-employment and property income and expenses, you will need to finalise your Income Tax position for the year and submit your tax return. 

Before you submit your tax return, you need to make sure you’ve included all your taxable income for the year in your compatible software. 

When you submit your tax return you will declare that the information you have provided is correct and complete.

Add your other income sources 

You may have other income sources, such as savings or dividends, that need to be declared to HMRC.

You will need to add details about these other income sources using your compatible software before you submit your tax return.

Using compatible software to submit your tax return 

You will need to submit your tax return through your Making Tax Digital for Income Tax compatible software.

If your current software does not support the submission of your other income sources, ask your software provider if and when they will be adding this to your compatible software.

If they are not adding this function or if it will not be in place before you need to submit your tax return, you can either:

  • choose alternative or additional compatible software that will support the submission of your other income sources
  • contact the Making Tax Digital for Income Tax dedicated support team for guidance

When to submit your tax return 

You must submit your tax return by 31 January following the end of the relevant tax year.  

If you miss the submission deadline, then you will be liable for a late submission penalty. Once the penalty point threshold is reached, then this becomes a financial penalty. 

After you have submitted your tax return 

The information you give to HMRC will then be used to generate your Self Assessment tax bill for that tax year.

If you do not pay your Self Assessment tax bill by the relevant deadlines, you may need to pay a late payment penalty. Making Tax Digital for Income Tax will not change the way you pay tax or the dates payments are due.