How to Sign Up for MTD 2026: Step-by-Step Guide (Under 30 Minutes)

Do You Actually Need to Sign Up?

MTD for Income Tax (officially MTD ITSA) applies in phases based on gross self-employment income:

This is based on your 2024/25 tax year income (April 2024 to April 2025). If you earned over £50,000 from self-employment or property in that year, you must comply by 6 April 2026.

You can also sign up voluntarily even if you earn under £50,000 — many people do this to get the system sorted before it becomes mandatory for them.

What You Need Before You Start

Gather these before opening HMRC's website:

• Your UTR (Unique Taxpayer Reference) — 10-digit number on any HMRC correspondence
• Government Gateway user ID and password — what you use for self assessment online
• National Insurance number
• Your chosen MTD software account — you need to have already signed up to the software (Step 1 below) before you can complete the HMRC sign-up
• Approximate income figure — HMRC will ask for your expected income for the current tax year

If you do not have a Government Gateway account, you will need to create one at www.gov.uk/log-in-register-hmrc-online-services. This typically requires ID verification and takes 5–10 minutes.

Step 1: Choose Your MTD-Compatible Software

You cannot sign up for MTD without first choosing software — HMRC requires you to authorise a specific application to submit on your behalf.

HMRC maintains an approved software list. The main options for sole traders and freelancers:

For most freelancers: FreeAgent (especially if you bank with NatWest, RBS, or Metro — it is often free) or QuickBooks Self-Employed at £8/month. Both have MTD submission built in.

Want to keep using spreadsheets? That is allowed — you just need bridging software to convert your spreadsheet data into the required submission format.

Step 2: Log In to Government Gateway

1. Go to www.gov.uk/sign-up-for-making-tax-digital-for-income-tax
2. Click Start now
3. Sign in with your Government Gateway credentials
4. If prompted, complete two-step verification (text message or authenticator app)

If you have forgotten your Government Gateway password, use the "Forgot your password?" link on the login page. HMRC will send a reset code to your registered email or phone.

Do not create a new account if you already have one for self assessment. Using a second account will cause problems with your tax record.

Step 3: Sign Up for MTD ITSA

Once logged in to Government Gateway:

1. Select "Sign up for MTD for Income Tax" from the available services
2. Confirm your personal details (name, address, UTR, NI number)
3. Enter your expected gross income for the current tax year (2025/26)
4. Confirm that you have chosen compatible software
5. Read and accept the terms
6. Submit the sign-up form

HMRC will send a confirmation to your Government Gateway inbox. This is not instant — it can take up to 72 hours for your sign-up to be fully processed, after which you can authorise your software.

Step 4: Connect Your Software to HMRC

Once HMRC confirms your sign-up (check your Government Gateway inbox), you need to authorise your software:

1. Open your MTD-compatible software (e.g. FreeAgent, QuickBooks)
2. Look for a setting labelled "Connect to HMRC", "MTD setup", or "Government Gateway link"
3. Click the authorisation link — you will be redirected to HMRC's website
4. Log in to Government Gateway again and grant permission for the software to submit returns on your behalf
5. Return to the software — it should now show a green "connected" status

This authorisation needs to be renewed periodically (usually every 18 months) — your software will remind you.

Step 5: Set Up Your Digital Records System

MTD requires you to maintain digital records from 6 April 2026. This means recording every business transaction digitally — no more paper receipts stuffed in a drawer and entered once a year.

Your digital records must include:

• Date, amount, and category of every income payment received
• Date, amount, and category of every business expense
• VAT details if you are VAT-registered
• Any property income (if applicable)

Most MTD software handles this automatically if you connect your business bank account — transactions feed in and just need categorising. This takes 10–15 minutes per week once set up.

If you prefer spreadsheets: you can maintain a spreadsheet and use bridging software to submit — but every transaction must still be recorded with the required digital fields.

Understanding Quarterly Updates

Instead of one annual return, MTD requires four quarterly updates plus an end-of-year declaration:

Quarterly updates are estimates — you are not paying tax each quarter. You are just telling HMRC roughly what your income and expenses were. The final tax calculation and payment still happens through the end-of-year declaration.

If you miss a quarterly update, HMRC's new points-based penalty system applies — 1 point per late submission, with penalties triggered at 4 points.

What If You Use an Accountant?

If you have an accountant or tax agent, they can sign up on your behalf. Ask them:

• Are they already registered as an MTD agent with HMRC?
• Which software will they use to manage your account?
• What is their process for quarterly updates — do they need anything from you, or will they pull it directly from your records?
• Will there be any additional charge for MTD compliance work?

Most accountants have been preparing for MTD for years. If yours has not discussed it with you by now, that is worth raising urgently.

Common Sign-Up Errors and Fixes

More errors covered: HMRC MTD Sign-Up Problems: Full Fix Guide

FAQ

Do I need to sign up for MTD if I earn under £50,000?

Not yet. The £50,000 threshold applies from April 2026. The £30,000 threshold follows in April 2027, and £20,000 in April 2028. You can sign up voluntarily at any threshold.

Can I sign up if I use a spreadsheet?

Yes. You need bridging software to convert your spreadsheet data into the submission format HMRC requires. Options include Absolute MTD (£60/year), BTC Software, and several others on HMRC's approved list.

What happens if I sign up late?

HMRC has confirmed a grace period for the first year — you will not receive financial penalties for late compliance in 2026/27, only warning notices. However, you should still aim to comply from April 6th.

Is the sign-up process different for landlords?

Slightly. Landlords with rental income over £50,000 sign up through the same service but need to specify their property income source. See our MTD for Landlords guide.

Can I undo the sign-up if I change my mind?

No — once signed up, you cannot voluntarily withdraw from MTD. If you believe you signed up in error (e.g. your income is actually below the threshold), contact HMRC on 0300 200 3310.