Submitting in-year updates for MTD in "untied"
Once you are mandated to be in MTD, you need to submit in-year updates once a quarter
This is optional if you are in MTD voluntarily. The in-year updates are also known as "quarterly updates". You are always filing year-to-date totals for your MTD income sources (self employment, property, foreign property), rather than information broken down by quarter. As you'll see from the video above, "untied" makes this straightforward.
The deadlines are (remember they're voluntary in 2025/26 for everyone):
- Up to 5 July by 7 August
- Up to 5 October by 7 November
- Up to 5 January by 7 February
- Up to 5 April by 7 May
End-of-year processes still need to be completed by 31 January (consistent with the traditional self assessment deadline). This is likely to involve filing an update of the year's totals as well as adding other income sources beyond self employment, property and foreign property.
During 2025/26 (and beyond if you are still in voluntarily) there are no penalties associated with the in-year update deadlines. These may also show as the 5th not the 7th of the month - don't worry about that (HMRC's original plan was for the deadline to be on the 5th).
The updates are not the same as a tax return
When you file a tax return, you make a formal declaration.
In-year updates don't require this - they're an indication that you're keeping digital records. They reflect what you have recorded up to that point.
It's likely that your figures will be subject to adjustments at the end of the year - you may need to reflect private use (eg of phone bills), there may be some things you're not sure if you're entitled to claim, there may be adjustments for fees deducted before you receive a payment, things may be missed off or miscategorised.
That's okay.
If a tax return is an "I am here" declaration, an in-year update is an "I'm roughly here" approximation.
To file updates in "untied" in the browser
- Log in via the browser at https://app.untied.io
- Click on Making Tax Digital in the left hand menu
- If it says to connect to HMRC, try refreshing a couple of times. If that doesn't work, it may be there's a glitch that means you need to reconnect.
Once you have made a submission following the end of a quarter, all previous obligations will show as met. If you realise you've missed something off you could choose to amend the figures, but don't worry if you don't do so ... as the totals will be included in your next year-to-date update anyway.
In the "untied" mobile app
(These pages have been updated for new flows and may not look exactly the same as the images, but the instructions below will give you general information for what you need to do)
- Navigate to the Taxes tab - you'll want to be in "this tax year" for quarterly updates
- Tap on "Prepare your tax submissions"
- Tap on Making Tax Digital
- Make sure you're in the right tax year - and use the selector to submit each MTD income source
- You may need to scroll down to see the obligations and to submit your update
(Note it may show due dates of 5 August etc for 2025/26 - once mandation comes in the due dates will be 7 August, 7 November, 7 February and 7 May).
Any update after the end of a quarter will meet the obligation
Repeat for each MTD income source
- You can use the menu at the top right to see other income and year end processes
