If you're a UK sole trader, you've probably heard the words "Making Tax Digital" mentioned more than once lately. And if your gut reaction is to put it in the "deal with it later" pile, you're not alone.
But here's the thing: MTD for sole traders is not the complicated overhaul it sounds like. At its core, it's three requirements. And if you understand those three things, the rest falls into place.
This guide covers everything you need to know about Making Tax Digital for Income Tax Self Assessment (ITSA), who's affected, what the deadlines actually are, and how to get ready without turning into an accountant.
What is MTD for sole traders?
Making Tax Digital for Income Tax, usually called MTD ITSA or just MTD, is HMRC's (His Majesty's Revenue and Customs) plan to move income tax reporting into the digital age.
Under the current system, you submit one Self Assessment tax return per year. Under MTD, that changes to four quarterly updates throughout the year, plus one final declaration at year end.
Same information. Just spread across the year instead of crammed into January.
Think of it like switching from one big annual shop to doing a smaller top-up each month. The total spend is the same, you're just not carrying it all at once.
Who needs to use MTD? The income thresholds explained
MTD for Income Tax is being rolled out in phases, based on your qualifying income:
| Phase | Qualifying income | Mandatory from |
|---|---|---|
| Phase 1 | Over £50,000 | 6 April 2026 |
| Phase 2 | Over £30,000 | 6 April 2027 |
| Phase 3 | Over £20,000 | 6 April 2028 |
HMRC uses your most recent Self Assessment return to determine which phase you fall into. For Phase 1, that's your 2024/25 return (submitted by 31 January 2026).
Around 860,000 sole traders and landlords are in scope from April 2026.
What counts as "qualifying income"?
Qualifying income is your gross self-employment income plus any gross UK property income, before you deduct expenses. So this is your turnover, not your profit.
If your freelance income was £44,000 and you also earn £8,000 from renting a property, your qualifying income is £52,000, putting you firmly in Phase 1.
What if I'm below the threshold right now?
You don't need to do anything yet. But if your income is anywhere near the £30,000–£50,000 range, it's worth getting familiar with how MTD works now. The April 2028 threshold of £20,000 will bring the large majority of UK sole traders into scope.
Not sure where you stand? Use the MTD eligibility checker to find out in about 30 seconds.
The three things MTD actually requires you to do
All the noise around MTD comes down to three requirements. That's the whole list.
1. Keep digital records
Every business transaction needs to be recorded digitally, using MTD-compatible software, not a spreadsheet you fill in by hand. For each entry, you need:
- The amount
- The date
- The category (which type of income or expense it is)
You don't need to scan every receipt. A photo, a bank transaction, or a PDF invoice is fine as supporting evidence. You just need the digital record of each transaction in your software.
2. Submit quarterly updates
Four times a year, you send HMRC a summary of your income and expenses for that quarter. Your software generates this from your digital records, you're not manually typing anything into a form. You review the totals, confirm they look right, and submit.
Each update includes:
- Total income for the quarter
- Total expenses by category
- Net profit figure
You're not sending individual receipts or invoices. Just the summary figures.
3. Submit a final declaration
At the end of the tax year, you submit a final declaration, this is the MTD equivalent of your Self Assessment return. It's where you add any other income sources, claim reliefs, and confirm your tax position for the year.
The deadline is the same as current Self Assessment: 31 January following the end of the tax year.
So instead of one submission per year, you're doing five. But four of them (the quarterly updates) are quick, generated automatically from your records.
Does MTD mean I pay tax four times a year?
No, and this is the most common misconception about MTD, so it's worth stating clearly.
Quarterly updates are reporting, not payment. You're telling HMRC how your business is going each quarter. You are not paying tax four times a year.
Your tax payment schedule doesn't change:
- 31 January, balancing payment for the previous tax year, plus first payment on account
- 31 July, second payment on account
MTD changes how often you report your income and expenses. It does not change when you pay tax.
Your MTD quarterly update deadlines for 2026/27
If you're in Phase 1, your first quarterly update is due 7 August 2026. Here are all the deadlines for the first full year:
| Quarter | Period covered | Deadline |
|---|---|---|
| Q1 | 6 April – 5 July 2026 | 7 August 2026 |
| Q2 | 6 July – 5 October 2026 | 7 November 2026 |
| Q3 | 6 October 2026 – 5 January 2027 | 7 February 2027 |
| Q4 | 6 January – 5 April 2027 | 7 May 2027 |
| Final declaration | Full tax year 2026/27 | 31 January 2028 |
Think of it like doing the washing up after each meal instead of letting it pile up all week. A bit of effort four times a year beats one overwhelming session in January.
What about penalties for missing a deadline?
HMRC has confirmed a soft landing period for 2026/27: no penalty points will be issued for late quarterly updates during this first year. This is a deliberate grace period while people get used to the new system.
However, a late final declaration will trigger an initial £200 penalty, and further penalties if the delay continues. So while the quarterly deadlines have some flexibility in year one, the January 31 final declaration doesn't.
The soft landing is a grace period, not a free pass. Building good habits now means 2027/28 is just routine.
For the complete picture, see our MTD ITSA deadlines calendar for sole traders.
How to sign up for Making Tax Digital for Income Tax
If you're in Phase 1, you need to sign up before 6 April 2026. Here's the process:
Step 1: Confirm your eligibility
Check your 2024/25 Self Assessment return for your gross income figures. If you're not sure, use Cuppa's MTD eligibility checker or speak to your accountant.
Step 2: Choose MTD-compatible software
You must use HMRC-recognised software to submit quarterly updates. You cannot log in to Government Gateway and type your totals in manually, submissions have to go through approved software via HMRC's API (Application Programming Interface, the secure digital connection between software and HMRC's systems).
More on how to choose the right software below.
Step 3: Sign up via GOV.UK
Go to the GOV.UK MTD sign-up page and log in with your Self Assessment credentials. You'll need:
- Your business name (as shown on invoices)
- Your business address
- Your business start date
- The tax year you're signing up from
If you have multiple self-employment income sources, you'll need to add each one separately.
Step 4: Start keeping digital records
Once you're signed up, start recording every income and expense entry digitally. The earlier you start, the more settled everything will feel when your first quarterly update is due.
Step 5: Submit your first quarterly update by 7 August 2026
This is the first real deadline for Phase 1 sole traders. Your software generates the submission from your records, you review it and hit submit. That's it.
For a full step-by-step of what happens on the day, see your first MTD quarterly update: a 20-minute walkthrough.
What digital records do you need to keep?
For every business transaction, you need to record three things:
- The amount, income received or expense paid
- The date, when it happened
- The category, which HMRC expense or income type it falls under
You don't need to keep physical receipts, but you should have digital evidence where possible, a bank transaction, a scanned invoice, or a photo of a receipt is all fine. HMRC requires you to keep records for five years after the final declaration deadline for that tax year.
What categories do you use?
HMRC has a defined list of categories for sole trader expenses. Common ones include:
- Office costs (stationery, phone, software subscriptions)
- Travel (mileage, train tickets, parking)
- Clothing (uniforms or protective equipment only)
- Premises costs (rent, utilities if working from a business premises)
- Professional fees (accountant, solicitor)
- Advertising and marketing
You don't need to memorise these, good MTD software will present them as a simple list when you're logging an expense. For the full breakdown of what you can and can't claim, see our guide to sole trader expenses you can actually claim.
What about home office expenses?
If you work from home, you can claim a portion of your household costs. HMRC offers a flat-rate simplified expenses option (based on hours worked at home per month), or you can calculate the actual proportion of costs attributable to business use.
The important thing: this needs to be recorded digitally and submitted as part of your quarterly update.
Choosing the right MTD software for sole traders
This is where a lot of sole traders get confused. There's no shortage of accounting software that claims to be MTD-compatible, but most of it is built for businesses with employees, stock systems, VAT returns, and payroll. If you're a sole trader, you're paying for a lot of features you'll never use.
What you actually need from MTD software:
- Direct HMRC connection, submits quarterly updates automatically via HMRC's API
- Simple income and expense recording, quick to log, no accounting knowledge needed
- HMRC-aligned expense categories, so your records map exactly to what HMRC expects
- Live tax estimate, so you can see your likely tax bill before January
- Receipt storage, to meet the five-year record retention requirement
That's the list. You don't need invoicing, payroll, multi-currency, or a chart of accounts.
Cuppa is built specifically for MTD-compliant income and expense tracking for UK sole traders. It's not a general accounting tool with MTD bolted on, every feature exists to keep you compliant and make quarterly submissions straightforward.
See everything Cuppa offers, or compare your options in our guide to the best MTD software for sole traders.
The calm way to think about all of this
MTD is a real change. But it's not a scary one.
You're not paying more tax. You're not doing more complex calculations. You're just reporting what you're already tracking, four times a year instead of once, using software instead of a form.
The sole traders who'll find MTD hardest are the ones who leave it to the last minute and end up rushing. The ones who'll barely notice it are the ones who start now, pick simple software, and get into the habit of logging as they go.
Here's what you need to do:
- Check your qualifying income, does MTD apply to you, and from when?
- Sign up before 6 April 2026 (if you're Phase 1)
- Choose MTD-compatible software that's built for sole traders, not accountants
- Start recording income and expenses digitally, now, not in March
- Submit your first quarterly update by 7 August 2026
Cuppa makes every step in that list simple. Try it free, setup takes under two minutes, and there's no credit card required.
Because running your business should take more of your time than reporting it.