.jpg&w=64&q=75){kind=small}
Making Tax Digital for Income Tax is the most significant change to UK tax reporting in a generation. From 6 April 2026, landlords with qualifying income above £50,000 must be signed up to MTD and using MTD-compatible software. If that deadline applies to you, the time to act is now.
This guide walks you through everything you need to know: whether you are in scope, what to prepare, and how to register with HMRC for Making Tax Digital from start to finish.
KEY TAKEAWAYS
Landlords with qualifying income over £50,000 must sign up for Making Tax Digital for Income Tax before 6 April 2026
Qualifying income is your combined gross rental and self-employment income before any expenses are deducted
HMRC determines your qualifying income using your most recently submitted Self Assessment return. Check it yourself and do not wait for a letter
Choosing software and authorising it are two separate steps. Both must be completed before any MTD submissions can be made to HMRC
An HMRC letter confirming you are within scope does not automatically enrol you. You must sign up actively through HMRC's online service
Do You Need to Register for Making Tax Digital?
Before you begin the registration process, it is important to confirm whether Making Tax Digital for Income Tax applies to you at all, and if so, when your deadline falls.
Who It Applies To
You will need to register for Making Tax Digital for Income Tax if all three of the following apply.
|
|
|
The Income Thresholds
MTD for Income Tax is being introduced in phases. When you must register depends on how much qualifying income you earn. Landlords with qualifying income over £50,000 must use it from 6 April 2026. Those with income over £30,000 must follow from 6 April 2027. The £20,000 threshold has been confirmed for 6 April 2028.
What Counts as Qualifying Income
Your qualifying income is your gross self-employment and property income combined, before any expenses are deducted. Gross rental income counts in full. Gross self-employment or sole trader income counts in full.
For jointly owned property, only your individual share counts. PAYE employment income does not count, and neither do dividends, pensions, or partnership profit shares.
WORKED EXAMPLE
A landlord receiving £28,000 in rental income and earning £25,000 as a sole trader has a total qualifying income of £53,000. This puts landlord above the £50,000 threshold and makes him mandatory from 6 April 2026.
To assess your qualifying income for a given tax year, HMRC looks at the Self Assessment return you submitted in the previous tax year. For the April 2026 mandate, HMRC is looking at your 2024 to 2025 return, which was due by 31 January 2026.
Even if HMRC writes to you confirming you are within scope, you should still check your own qualifying income independently rather than relying solely on their assessment.
Can You Register Voluntarily?
Yes. If your mandatory date is April 2027 but you want to get ahead of the change, you can choose to register for Making Tax Digital before you are required to. You can volunteer either for the current 2025 to 2026 tax year or from 6 April 2026 for the 2026 to 2027 tax year.
This can be a useful way to test your systems and processes before the obligation becomes mandatory.
However, Even if you register voluntarily for MTD, you will still be charged penalty points, but not for late quarterly updates. Penalty points will apply for late Final Declarations (annual tax returns).
Before You Begin: Four Things to Have in Place
The sign-up process itself is straightforward, but only if you have the right foundations in place first. Missing any of these steps can cause delays, errors, or rejected submissions down the line.
Confirm Your Qualifying Income
Check your most recently submitted Self Assessment return to determine whether your gross income from property and self-employment puts you above the relevant threshold. HMRC will use that same return to assess whether you are within scope. Do not wait for a letter from HMRC.
Even if you do not receive one, it remains your responsibility to determine whether you need to sign up and to do so on time.
Submit Your Final Non-MTD Self Assessment Return
You must submit a Self Assessment return for the tax year immediately before your MTD start date before you begin using Making Tax Digital. You must also have submitted a return within the last two years to be eligible to register at all. Signing up and then starting to use MTD before this return has been filed can cause data misallocation and submission errors in HMRC systems, so timing this correctly matters.
Choose Compatible MTD Software
HMRC requires you to use recognised digital software to meet your MTD obligations. This software must be selected and ready before you begin the registration process. There are two main types available.
Record-creation software handles everything in one place, including recording income and expenses, sending quarterly updates, and submitting your tax return to HMRC.
Bridging software connects your existing spreadsheets or accounting tools to HMRC, allowing you to continue using your current records while still meeting MTD requirements.
Use RentalBux MTD software finder tool to check whether your existing software is already recognised, or to identify a product that suits your needs.
One important distinction to note at this stage: selecting software is not the same as authorising it. Authorisation is a separate step that takes place after registration is complete and is covered in Step 5 of the sign-up process below.
Have Your Government Gateway Credentials Ready
You will need your Government Gateway user ID and password to access HMRC's online sign-up service. These must be the credentials linked to your Self Assessment record. If you have previously filed your Self Assessment return online, you will already have these.
In addition to your login details, you should have the following to hand: your business or property income start date if it falls within the last two tax years, and for sole traders, your business name, business address, and the nature of your trade.
The Registration Process: Step by Step
Once your pre-conditions are in place, you are ready to sign up for Making Tax Digital through HMRC's online service. Follow each step in order.
Step 1: Access the HMRC Sign-Up Service
Log in to HMRC online services using your Government Gateway credentials and select the option to sign up for Making Tax Digital for Income Tax.
If you are registering close to the April 2026 deadline, plan around this window to avoid last-minute issues.
Step 2: Verify Your Identity
HMRC requires identity verification before you can proceed with registration. There are two ways to complete this.
The first is biometric verification, where you use an app on your mobile phone to match a photo of your face to your passport or driving licence.
The second is knowledge-based verification, where you answer questions using information HMRC already holds about you (the same user ID and password you got when you registered for Self-Assessment), such as details from your passport, driving licence, P60, credit reference, or a recent payslip.
Step 3: Declare Your Income Sources
You will be asked to confirm whether you have self-employment income, property income, or both. HMRC may pre-populate some of this information from your existing records, but you should review it carefully and add any income sources that are missing.
If you are a sole trader, you will need to confirm your business name, business address, and the nature of your trade. If you have multiple income sources, each one must be declared individually within the service.
Step 4: Confirm Your Start Date
You will be asked to confirm the tax year from which you intend to start using Making Tax Digital for Income Tax. This step locks in your obligations and determines when your quarterly update schedule begins. Choose this carefully, as it affects the timing of your first submission and your ongoing compliance calendar from that point forward.
Step 5: Authorise Your Software
After completing registration, you must authorise your chosen software to connect to HMRC. This is done within your software's own settings, not through the HMRC sign-up service.
Without completing this step, your software cannot send quarterly updates or submit your tax return to HMRC, regardless of whether your registration is complete.
Authorisation is a one-time step per software product. Once connected, your software will communicate with HMRC on your behalf for all future submissions.
Step 6: Receive HMRC Confirmation
HMRC will send a confirmation email once your registration is successfully complete. This is your signal to begin using the service. Do not attempt to submit any quarterly updates before you receive this confirmation.
Submissions made prior to confirmation can result in errors and may not be correctly recorded against your account.
Can My Accountant Register Me for MTD?
Yes. An authorised tax agent or accountant can register for MTD on your behalf through HMRC's agent registration service. This is a separate route from the individual sign-up process and works as follows.
Your accountant must have an Agent Services Account(ASA) set up with HMRC. This is different from the standard HMRC Online Services for Agents account they may already use. If they do not have one, they must create it before registration can begin.
If your accountant is already authorised to act on your behalf for Self Assessment, that authorisation is recognised for MTD purposes. However, it may not automatically appear in their Agent Services Account, in which case they will need to add it manually before proceeding.
Adding the authorisation does not complete your registration. Your accountant must then actively sign you up through the agent version of the online service as a separate step.
If your accountant is not yet authorised for your Self Assessment, they will need to request your authorisation through their Agent Services Account first. You will need to approve this before registration can proceed.
Whether your accountant registers you or you register yourself, the same pre-conditions apply. Your most recent Self Assessment return must be submitted before registration begins, and software must be selected and authorised before any quarterly updates can be sent to HMRC.
Confirm These Three Steps with Your Accountant
|
After Registration: Your Ongoing Obligations
Registering for Making Tax Digital is just the beginning. Once you are registered, you take on a set of ongoing obligations that replace the traditional annual Self Assessment return.
Maintain Digital Records From Day One
From the start of your MTD period, all property and self-employment income and expenses must be recorded digitally within your authorised software. Records must be created, stored, and kept in a format that can be corrected if needed.
Submit Quarterly Updates
Instead of one annual return, you now submit four quarterly updates per tax year through your authorised software. It is important to understand that each quarterly update reports cumulative year-to-date figures, not just the income and expenses from that isolated quarter alone.
Submit Your Final Declaration
At the end of each tax year, you submit a final declaration through your MTD software. This replaces the traditional Self Assessment return and must be submitted by 31 January following the end of the tax year.
Penalties: What Landlords Need to Know
Understanding the penalty position is particularly important if you are deciding whether to sign up voluntarily or wait until your mandatory date.
Landlords who are mandated from April 2026 will not receive penalty points for late quarterly updates during the first tax year, which covers 2026 to 2027. This grace period exists to allow time to adjust to the new system.
However, penalties for late final declarations and late tax payments apply from day one with no grace period, regardless of whether you are a new or mandated user.
Common Mistakes Landlords Make When Registering
These are the most frequent errors made during the MTD registration process, each of which can cause delays or trigger unnecessary penalties.
Registering before submitting your final non-MTD Self Assessment return
You must file your return for the tax year before your MTD start date before you begin using the service. Starting too early causes submission errors and data misallocation in HMRC systems.
Selecting software without authorising it
Choosing an MTD-compatible product is not enough. Without completing the separate authorisation step within your software's settings, HMRC cannot receive any submissions from you regardless of your registration status.
Assuming an HMRC letter means automatic enrolment
If HMRC writes to confirm you are within scope, that letter is a notification, not a registration. You must still actively sign up for Making Tax Digital yourself through HMRC's online service.
Using software that is not recognised by HMRC
Not all accounting tools are approved for MTD purposes. Using unrecognised software makes it impossible to meet your quarterly update and final declaration requirements. Always check HMRC's software finder before committing to a product.
Conclusion
Registering for Making Tax Digital is a process that rewards preparation. Landlords who confirm their qualifying income early, select the right software, time their registration correctly, and understand their ongoing obligations will make the transition without disruption.
The biggest risks come from leaving things too late, using unrecognised software, or assuming the process is more automatic than it actually is. Every step, from checking your threshold to authorising your software, requires a deliberate action on your part.
Frequently Asked Questions
RENTALBUX GUIDE
Connecting to HMRC — Step-by-Step Guide
Follow RentalBux's full walkthrough on authorising your software with HMRC — screenshots included, ready in minutes.
