Making Tax Digital has entered a major new phase in 2026, bringing more sole traders and landlords into HMRC’s digital reporting system. However, the phrase “HMRC MTD auto enrolment” can cause confusion because the enrolment process is different for Making Tax Digital for VAT and Making Tax Digital for Income Tax.
For Making Tax Digital for Income Tax, eligible taxpayers are not simply automatically enrolled by HMRC. HMRC checks Self Assessment information to determine who is likely to be required to use the system and may send a letter, but the taxpayer or their authorised agent must still complete the MTD sign-up process.
This distinction is particularly important in 2026 because the first mandatory phase of Making Tax Digital for Income Tax started on 6 April 2026.
What Is HMRC Making Tax Digital?
Making Tax Digital, usually shortened to MTD, is HMRC’s programme for moving tax record-keeping and reporting towards compatible digital software.
For Income Tax, the system applies to qualifying sole traders and landlords. Those within MTD must generally use compatible software to maintain digital records, provide quarterly updates and complete their tax return through the MTD system.
It does not mean taxpayers have to pay Income Tax four times a year. Quarterly submissions primarily provide HMRC with information based on digital income and expense records.
Does HMRC Automatically Enrol People Into MTD?
Not for Making Tax Digital for Income Tax.
HMRC reviews Self Assessment returns to identify taxpayers whose qualifying income places them within the mandatory MTD rules. Where HMRC identifies someone as being above the relevant threshold, it will normally write to that person explaining when they need to start using MTD.
Receiving that letter does not replace the sign-up process.
Someone who needs to use MTD for Income Tax must follow HMRC’s registration process themselves, or their tax agent can complete it on their behalf. HMRC currently advises taxpayers who were required to use MTD from the 2026/27 tax year but have not yet signed up to do so.
Importantly, taxpayers should not assume they are outside MTD simply because they have not received an HMRC letter. HMRC states that individuals remain responsible for checking whether the rules apply to them.
Who Has To Use MTD for Income Tax in 2026?
The first mandatory stage began on 6 April 2026.
A sole trader or landlord generally needed to start using MTD from that date where their qualifying income for the 2024/25 tax year exceeded £50,000.
The thresholds are being introduced progressively:
| Qualifying Income | Tax Year Used to Assess Income | MTD Start Date |
| Over £50,000 | 2024/25 | 6 April 2026 |
| Over £30,000 | 2025/26 | 6 April 2027 |
| Over £20,000 | 2026/27 | 6 April 2028 |
HMRC’s current guidance confirms these staged thresholds.
These limits refer to qualifying income, rather than taxable profit.
What Counts as Qualifying Income?
Qualifying income is broadly the individual’s gross income from self-employment and property before expenses.
Where someone has several qualifying sources, their income is combined when deciding whether the relevant MTD threshold has been exceeded. Other types of income are not generally included when calculating qualifying income for this purpose.
For example, a person receiving:
- £35,000 of gross self-employment income; and
- £20,000 of gross property income
would have £55,000 of qualifying income for MTD purposes, before considering whether any exemption or special rule applies.
What Happens When HMRC Identifies Someone for MTD?
HMRC reviews information reported through Self Assessment each year.
If the qualifying income shown on the relevant return exceeds the threshold, HMRC may send a letter explaining that the taxpayer needs to start using Making Tax Digital from the following tax year.
The individual then needs to prepare for MTD rather than waiting for HMRC to activate everything automatically.
Typical preparation includes choosing compatible software, making sure Self Assessment registration is correct, arranging agent authorisation where necessary and completing the MTD sign-up process. HMRC does not provide its own accounting software for MTD for Income Tax.
Is MTD for VAT Automatically Enrolled?
This is where much of the confusion surrounding HMRC MTD auto enrolment originates.
The position for Making Tax Digital for VAT is different. HMRC guidance states that VAT-registered businesses no longer need to sign themselves up for MTD for VAT because HMRC automatically signs them up unless they are exempt or have applied for an exemption.
Therefore:
MTD for VAT: HMRC generally handles automatic sign-up.
MTD for Income Tax: the taxpayer or their agent still needs to complete the appropriate sign-up process.
Businesses should therefore check which part of Making Tax Digital they are dealing with before assuming automatic enrolment applies.
What Does Someone Need Before Signing Up for MTD Income Tax?
HMRC requires a person signing up for MTD for Income Tax to already be registered for Self Assessment and to have submitted a tax return within the relevant period required by the service.
They should also have compatible MTD software available.
The software is important because MTD is not simply an additional form on the normal HMRC website. Compatible software is used to maintain digital records and communicate the required information to HMRC.
An accountant or tax agent can manage parts of the process for a client, although appropriate HMRC authorisation may be required.
What Must Taxpayers Do After Joining MTD?
Once inside Making Tax Digital for Income Tax, taxpayers must maintain appropriate digital records of qualifying business and property transactions.
Those records are then used by compatible software to prepare quarterly updates.
For the standard quarterly reporting cycle, HMRC’s deadlines are:
| Reporting Period | Quarterly Update Deadline |
| 6 April to 5 July | 7 August |
| 6 April to 5 October | 7 November |
| 6 April to 5 January | 7 February |
| 6 April to 5 April | 7 May |
HMRC also permits calendar-based update periods in appropriate circumstances.
The first MTD Income Tax quarterly deadline for taxpayers entering the mandatory system in April 2026 was 7 August 2026.
Does a Quarterly Update Replace the Tax Return?
No.
A quarterly MTD update is not the same as the taxpayer’s final tax return. HMRC describes the quarterly submission as an update generated from the digital records held during the year. Tax or accounting adjustments do not necessarily need to be completed before each quarterly update is submitted.
The taxpayer will still need to complete the required year-end Income Tax reporting through compatible software.
Are There Penalties for Missing an MTD Quarterly Deadline?
HMRC has introduced a transitional approach for taxpayers entering mandatory MTD for Income Tax in 2026/27.
HMRC states that there are no penalties for missing quarterly update deadlines during the 2026/27 tax year. However, taxpayers still need to maintain digital records and provide the required quarterly updates before completing their tax return.
This does not mean all Income Tax deadlines are penalty-free. Penalties can still apply to matters such as submitting a tax return late or paying tax after the required deadline.
What If Someone Has Not Received an HMRC MTD Letter?
Not receiving an HMRC letter does not automatically mean MTD does not apply.
HMRC explicitly states that taxpayers remain responsible for checking whether they need to use MTD and ensuring they are signed up and prepared where required.
Someone with self-employment or property income should therefore check their qualifying income rather than relying exclusively on correspondence from HMRC.
For those required to use MTD from 6 April 2026 who have not yet registered, HMRC’s current guidance says they can still complete the sign-up process.
Can Someone Join MTD Before It Becomes Mandatory?
Yes.
Some taxpayers whose mandatory start date is later can volunteer to use Making Tax Digital earlier. For example, someone expected to become mandatory from April 2027 may be able to sign up voluntarily beforehand.
However, voluntary registration creates additional digital record-keeping and reporting responsibilities, so taxpayers should understand the requirements before joining early.
Can Someone Be Exempt From Making Tax Digital?
Some people may qualify for an exemption from MTD for Income Tax.
HMRC recognises circumstances in which a taxpayer may be unable to use digital systems appropriately, including certain cases of digital exclusion. A person who qualifies for an exemption can continue reporting through the alternative Self Assessment arrangements that apply to them.
An exemption should not be assumed simply because digital accounting would be inconvenient. HMRC applies specific eligibility rules and may require an application.
HMRC MTD Auto Enrolment: What Taxpayers Should Remember?
The most important point is that Making Tax Digital for Income Tax is mandatory for increasing numbers of sole traders and landlords, but mandatory participation does not mean HMRC automatically completes the Income Tax MTD sign-up process.
HMRC may identify an eligible taxpayer from their Self Assessment return and send them a notification, but the taxpayer or their authorised agent must still take the necessary steps to register and use compatible software.
The position is different for MTD for VAT, where HMRC guidance confirms that eligible VAT-registered businesses are generally automatically signed up.
With the Income Tax threshold falling from over £50,000 in 2026 to over £30,000 in 2027 and over £20,000 in 2028, many more sole traders and landlords will need to check their position over the next two tax years.
Taxpayers who are uncertain about how the rules apply to their circumstances should check the latest GOV.UK guidance or seek advice from a suitably qualified tax professional.
FAQs
Does HMRC Automatically Enrol You Into MTD?
For MTD for Income Tax, no. Eligible taxpayers or their agents still need to complete the sign-up process. HMRC may write to people it identifies as being required to use MTD.
What Is the MTD Income Threshold for 2026?
Sole traders and landlords with qualifying income over £50,000 for 2024/25 were generally required to start using MTD for Income Tax from 6 April 2026.
Is the £50,000 MTD Threshold Based on Profit?
No. Qualifying income generally means gross self-employment and property income before expenses, rather than taxable profit.
What Is the MTD Threshold From April 2027?
Those with qualifying income above £30,000 in 2025/26 will generally be required to use MTD for Income Tax from 6 April 2027.
What Will the MTD Threshold Be From April 2028?
The threshold is scheduled to extend to those with qualifying income above £20,000 in 2026/27, requiring them to use MTD from 6 April 2028.
What Happens If an HMRC MTD Letter Does Not Arrive?
Taxpayers must still check whether MTD applies to them. HMRC says responsibility for determining whether registration is required remains with the taxpayer even if no letter is received.
Is MTD for VAT Automatically Enrolled?
Generally, yes. HMRC says VAT-registered businesses are automatically signed up for MTD for VAT unless they are exempt or have applied for an exemption.