Articles16 Jun 2026
When do you have to pay Capital Gains Tax in the UK?
It's important to understand the rules around capital gains tax, how it is calculated, and when it is due.
Articles
Self-employed people and landlords with an income between £20,000 and £30,000 will be required to use Making Tax Digital (MTD) from 6 April 2028. This will bring a further 900,000 low-income taxpayers under the MTD regime.
HMRC previously stated that those with an income between £20,000 and £30,000 would be mandated before the end of this parliament. The specific start date of April 2028 is therefore earlier than expected.
Timing
Taxpayers with an income of more than £50,000 will be mandated from 6 April 2026 for the 2026/27 tax year. The deadline for finalising MTD obligations for this year is not until 31 January 2028, which doesn’t give HMRC much time to sort out any problems before the new cohort of taxpayers join the system in April 2028. At present:
The relevant income for meeting the £20,000 threshold will be that for the 2026/27 tax year.
In the future, the MTD threshold might be lowered again as the government has stated there are plans to expand the regime to include those with an income below £20,000.
Self assessment
HMRC has also announced that the year-end self assessment tax return must be submitted using MTD or other suitable software. It was previously thought that taxpayers would be able to use HMRC’s online service, but this is not going to be the case.
When selecting suitable MTD software, it is important to make sure it can also deal with the tax return submission. If the MTD software cannot do this, a different software package will be required to complete the year-end requirement.
HMRC’s list of software that’s compatible with MTD for income tax can be found here.
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