February 2026

MTD Last-Minute Setup Guide: What to Do If You Haven't Started Yet

Making Tax Digital for Income Tax starts on 6 April 2026. If your self-employment income exceeds £50,000 and you haven't set up MTD-compatible software yet, you're not alone — HMRC estimates only 40% of affected taxpayers are ready. But you have 5 weeks. That's enough. Here's exactly what to do, week by week.

First: Do You Actually Need to Worry?

MTD for Income Tax applies to you from 6 April 2026 if all three of these are true:

You're self-employed or a landlord (or both)
Your gross income from self-employment and/or property exceeded £50,000 in the 2024/25 tax year
You're not already exempt (see exemptions section below)

Not sure if you're above £50k? Check your 2024/25 Self-Assessment return. Look at the total turnover figure on your self-employment pages, not your profit. If your turnover (before expenses) was over £50,000, you're in the first wave.

If you earn between £30,000 and £50,000, you have until April 2027. You've got time, but you'd be smart to start now while there's no pressure. We've got a complete guide for the 2027 cohort if that's you.

If you earn under £30,000, you're not affected until April 2028 at the earliest.

What Actually Changes on 6 April

MTD doesn't change how much tax you pay. It changes how you report it. Here's the practical difference:

Before MTD (what you do now)

Keep records however you like (spreadsheets, shoeboxes, napkins)
Submit one Self-Assessment tax return per year (by 31 January)
Pay tax once or twice a year

After MTD (from 6 April 2026)

Keep digital records using MTD-compatible software
Submit quarterly updates to HMRC (every 3 months)
Submit an End of Period Statement (annual summary)
Submit a Final Declaration (replaces Self-Assessment)
Tax payments remain roughly the same schedule

The biggest practical change is the quarterly updates. Every three months, your software sends a summary of your income and expenses to HMRC. It's not a tax return — think of it as a progress report.

Important: Your first quarterly update deadline is 5 August 2026 (covering April–June 2026). So you don't just need to be set up by 6 April — you need to be recording transactions from 6 April, because those records feed your first quarterly update.

The Penalties for Getting This Wrong

HMRC has introduced a new points-based penalty system for MTD. It works like driving licence points:

What You Miss	What Happens
Late quarterly update	1 penalty point
4 points accumulated (quarterly filers)	£200 fixed penalty
Each additional late submission after threshold	£200 per submission
Late payment (1-15 days)	No penalty (grace period)
Late payment (16-30 days)	2% of tax owed
Late payment (31+ days)	2% + additional 2% + daily interest

Miss all four quarterly updates in year one? That's a £200 penalty once you hit the threshold, then £200 for every late submission after that. Over a full year of non-compliance, you're looking at £400–£800 in penalties alone — plus interest on any late tax payments.

Use our free MTD Penalty Calculator to see exactly what non-compliance could cost you.

Week 1: Choose Your Software (Do This Today)

This is the single most important decision, and it's where most people get stuck. Here's how to make it in under 30 minutes.

Step 1: Check HMRC's recognised software list

HMRC maintains a list of software that's been tested and approved for MTD for Income Tax. Only use software on this list. Visit gov.uk/guidance/find-software-thats-compatible-with-making-tax-digital-for-income-tax.

Step 2: Match software to your situation

Your Situation	Best Fit	Approx. Cost
Simple freelancer, few expenses	FreeAgent, GoSimpleTax, or Hammock	£0–£15/month
Freelancer + property income	Xero, QuickBooks, or FreeAgent	£12–£36/month
Already use spreadsheets	Bridging software (keeps your spreadsheet, adds HMRC connection)	£50–£150/year
CIS subcontractor	Xero or QuickBooks (handles CIS deductions)	£12–£36/month
Use an accountant	Ask them — they'll have a preferred platform	Varies (often bundled in fees)

We've got a detailed MTD software comparison if you want the full breakdown.

Step 3: Sign up and start a free trial

Most MTD software offers a free trial. Sign up today. You don't need to enter payment details yet — just get the account created and the app installed.

Week 1 checklist:

☐ Confirm you're in the £50k+ group (check 2024/25 return)
☐ Choose MTD software from HMRC's approved list
☐ Create an account / start free trial
☐ Install the mobile app (if available)

Week 2: Connect to HMRC and Import Your Data

Step 1: Sign up for MTD on your Government Gateway

You need to opt in to MTD for Income Tax through your Government Gateway account. This is separate from your existing Self-Assessment registration.

Log into your Government Gateway account
Go to your Business Tax Account
Look for "Making Tax Digital for Income Tax" and follow the sign-up process
You'll need your UTR (Unique Taxpayer Reference) and National Insurance number

Warning: HMRC sign-up can take up to 72 hours to process. Don't leave this to the last week. Do it now.

Step 2: Authorise your software

Once HMRC has processed your sign-up, connect your chosen software to your Government Gateway account. Every MTD software has a "Connect to HMRC" button — it'll redirect you to Government Gateway to grant permission.

Step 3: Import your existing records

You don't need to backfill years of data. MTD starts fresh from 6 April 2026. But you should:

Import your opening balances (bank account balances as of 5 April 2026)
Set up your income categories (match what you use on your Self-Assessment return)
Set up your expense categories (same — match your existing categories)
Connect your bank feeds (most software can auto-import transactions from your bank)

Week 2 checklist:

☐ Sign up for MTD on Government Gateway
☐ Wait for HMRC confirmation (up to 72 hours)
☐ Authorise your software to talk to HMRC
☐ Connect bank feeds
☐ Set up income and expense categories

Week 3: Set Up Your Digital Records System

MTD requires you to keep digital records of all business income and expenses. "Digital" means in MTD-compatible software — not paper, not photos of receipts (unless your software extracts the data from them).

What records you must keep digitally

Business income: Every invoice or payment you receive, with the date, amount, and who paid you
Business expenses: Every deductible expense, with the date, amount, category, and what it was for
If you use the simplified expenses method: Mileage logs, home office hours, etc.

Set up a weekly habit

The biggest mistake people make with MTD is treating it like Self-Assessment — ignoring it for 11 months then panicking in January. MTD works best when you spend 15 minutes a week keeping records current.

Here's a system that works:

Friday afternoon: Open your MTD software
Review bank feed: Categorise any uncategorised transactions
Log cash payments: Add any cash income or expenses not in the bank feed
Snap receipts: Photograph and upload any paper receipts from the week
Close it: 15 minutes, done, back to actual work

If you do this weekly, your quarterly updates essentially submit themselves — the data's already there.

Week 3 checklist:

☐ Understand what records you need to keep digitally
☐ Set a weekly 15-minute calendar reminder (e.g. Friday 4pm)
☐ Practice logging a few test transactions in your software
☐ Learn how to photograph and upload receipts
☐ Check your software's bank feed is importing correctly

Week 4: Do a Dry Run

This is the week most guides skip, and it's the most valuable. Before MTD goes live, practice the full quarterly update process.

Simulate a quarterly update

Enter a month's worth of sample transactions (use January 2026 as a test)
Categorise everything as you would for real
Review the quarterly summary your software generates
Don't submit it — just review it and make sure the numbers look right
Delete the test data (or your software may have a sandbox/test mode)

This exercise will reveal any gaps in your setup. Maybe you don't have the right expense categories. Maybe your bank feed is categorising things incorrectly. Better to discover this now than in August when your first real update is due.

Test the mobile experience

If your software has a mobile app, test logging an expense on your phone. This is how you'll capture most ad-hoc purchases — the easier it is, the more likely you'll actually do it.

Week 4 checklist:

☐ Enter sample transactions (1 month's worth)
☐ Categorise and review
☐ Check the quarterly summary report looks sensible
☐ Test the mobile app for logging expenses
☐ Delete test data

Week 5: Final Checks

It's the last week of March. MTD starts on Monday 6 April. Here's your final checklist.

Verify everything is connected

☐ Software is authorised with HMRC (check for a green tick or "connected" status)
☐ Bank feeds are pulling in transactions
☐ You know how to log income and expenses
☐ You know where to find the "Submit quarterly update" function
☐ Your weekly bookkeeping reminder is in your calendar

Set up quarterly reminders

Your quarterly update deadlines for 2026/27 are:

Quarter	Period	Deadline
Q1	6 April – 5 July 2026	5 August 2026
Q2	6 July – 5 October 2026	5 November 2026
Q3	6 October 2026 – 5 January 2027	5 February 2027
Q4	6 January – 5 April 2027	5 May 2027

For all the deadlines and what each submission involves, see our complete MTD quarterly deadlines guide.

Week 5 checklist:

☐ Verify HMRC connection is active
☐ Confirm bank feeds are working
☐ Set calendar reminders for all 4 quarterly deadlines
☐ Know where to find the submit button in your software
☐ Start recording transactions from 6 April

Quick Software Comparison: The Top 5 for Late Starters

If you're choosing software at the last minute, here are the five options that are fastest to set up:

Software	Setup Time	Cost	Best For
FreeAgent	~20 mins	£14.50/month (free with NatWest/RBS)	Freelancers who want simplicity
QuickBooks Self-Employed	~15 mins	£8/month	Budget-conscious sole traders
Xero	~30 mins	£15–£36/month	Those with accountants (most popular with accountants)
GoSimpleTax	~15 mins	£58/year	People who do their own tax returns
Hammock	~10 mins	Free (basic) / £5/month	Absolute beginners, landlords

For a full comparison with features, pros, cons, and our recommendations, read our MTD Software: Free vs Paid — What You Actually Need guide.

7 Mistakes People Make When Rushing MTD Setup

1. Using software that isn't on HMRC's approved list

Not every accounting app supports MTD. If it can't submit quarterly updates directly to HMRC, it doesn't count. Check the official list before paying for anything.

2. Forgetting to sign up on Government Gateway

Having MTD software isn't enough. You must also register for MTD for Income Tax through your Government Gateway account. This is a separate step and takes up to 72 hours.

3. Not connecting bank feeds

Bank feeds are the single biggest time-saver. If you're manually typing every transaction, you'll hate MTD within a month. Connect your bank on day one.

4. Overcomplicating expense categories

Your expense categories should match what you use on your Self-Assessment return. Don't create 47 sub-categories for office supplies. Keep it simple: the fewer categories, the faster your weekly bookkeeping.

5. Treating quarterly updates like tax returns

A quarterly update is a summary, not a tax calculation. Don't agonise over getting every penny right — you can adjust in later quarters and in your End of Period Statement. The purpose is to give HMRC a running picture, not a final answer.

6. Not testing before go-live

If your first experience of submitting a quarterly update is with real data and a real deadline, you'll stress unnecessarily. Do a dry run in March (see Week 4 above).

7. Choosing the cheapest option regardless of fit

Free software exists, and it's fine for simple situations. But if you have property income, CIS deductions, or foreign income, the free options probably won't handle it. Paying £15/month for software that actually fits your situation saves you hours of workarounds.

What If You Use an Accountant?

If you have an accountant, talk to them now. Many accountants are managing MTD migration for their clients and will handle most of the setup for you. But they need time, and they're getting busier as April approaches.

Questions to ask your accountant

Are you handling my MTD sign-up, or do I need to do it?
Which software are you recommending? Will you set it up?
Will you submit the quarterly updates, or am I expected to?
Is your fee changing because of MTD? (Many accountants are increasing fees to cover the additional quarterly work.)
Do I need to change how I send you receipts/records?

If your accountant hasn't mentioned MTD yet, that's a red flag. Either they're not prepared, or they don't think you're affected. Either way, check with them urgently.

Who's Actually Exempt?

A small number of people are exempt from MTD even if they earn over £50k:

Digitally excluded: If you genuinely cannot use digital tools due to age, disability, remoteness of location, or religious beliefs, you can apply for an exemption
Insolvency: If you're in an insolvency procedure
Trusts and estates: Personal representatives and trustees are currently excluded
Foster carers using the simplified reporting method
Non-UK residents with only UK property income may have different rules

If you think you qualify for a digital exclusion exemption, you need to apply to HMRC before 6 April. Don't assume you're exempt — get it confirmed in writing.

FAQ

Do I need to keep paper receipts as well?

No — if your digital records are complete and accurate, you don't need paper backups. However, many accountants recommend keeping paper receipts for at least 12 months as a safety net, and HMRC can ask for evidence if they query an expense.

Can I use a spreadsheet?

Not on its own. You can keep your records in a spreadsheet, but you'll need bridging software to submit the data to HMRC. The spreadsheet itself can't talk to HMRC. Some bridging tools are quite cheap (£50–£150/year), but you'll still need to manually enter data into the spreadsheet.

What if I'm both self-employed and a landlord?

If your combined income from self-employment and property exceeds £50,000, you need MTD for both. Your software should handle both income types. Check that whatever you choose supports property income reporting.

Will MTD change how much tax I pay?

No. MTD changes how you report income, not how it's taxed. Your tax bill will be calculated the same way. The only financial impact is the cost of software (if you didn't use any before) and penalties if you miss deadlines.

What happens if I'm not ready by 6 April?

You won't face an immediate penalty on 6 April itself. Your first quarterly update isn't due until 5 August 2026. But if you're not recording transactions digitally from 6 April, you'll have a gap in your records that you'll need to backfill — and that's more work than just starting on time.

I'm currently in the middle of a tax year. Do I need to backfill?

No. MTD applies from the start of the 2026/27 tax year (6 April 2026). You don't need to digitise records from before that date. Your 2025/26 tax year is still reported the old way (Self-Assessment by 31 January 2027).

Your Next Steps

You have five weeks. That's more than enough if you follow this guide. The key is to start today — even if you only complete Step 1 (choosing software). Momentum matters more than perfection.

Free tools to help you

MTD Readiness Checker — find out exactly where you stand in 2 minutes
MTD Penalty Calculator — see what non-compliance actually costs
MTD Quarterly Deadlines Guide — every deadline for 2026/27

Want the complete setup toolkit?

MTD Readiness Toolkit — £14

Complete step-by-step MTD setup guide, software comparison matrix, deadline calendar, record-keeping templates, and HMRC checklist. Everything in this article, plus the templates and tools to actually implement it.

Download the MTD Toolkit →