MTD for Self-Assessment is HMRC’s digital system. Basically, it is here to replace traditional annual tax returns with quarterly, digital reporting.
Instead of filing one big return at the end of the year, eligible sole traders and landlords must keep digital records. Then they must send updates directly to HMRC every three months. They also need to make sure to do it using compatible software.
This guide explains exactly what MTD for self assessment means in the 2026/27 tax year, including:
- How does making tax digital work for self employed
- When does MTD for self assessment start
- Can I do my own taxes if self employed
- And much more…
Let’s get into it!
What Is MTD for Self-Assessment?
MTD for self assessment is a new government plan to digitise the UK tax system. Instead of filling out one big tax return online every January, you will use compatible software to keep digital records of your business income and expenses. You will then send shorter updates to HMRC every quarter.
The goal from HMRC’s side is to reduce errors. And also to get a clearer picture of business earnings in real time. For you, it means your paperwork needs a bit of a structural upgrade.
So yes, the annual tax reporting process is changing quite a bit. But remember that it does not mean paying tax four times a year. That misunderstanding about MTD for self assessment is everywhere right now.
Does Making Tax Digital Apply to Self-Employed People?
Absolutely! Self-employed sole traders are right at the centre of Making Tax Digital for Income Tax (MTD ITSA).
If you are:
- A sole trader
- A freelancer
- A contractor
- A landlord
- Running a side business
- Self-employed alongside PAYE
then you may eventually fall under the Making Tax Digital for self employed rules.
However, MTD for self assessment is being phased in. Yes, it is based on your total annual gross income. This is combined income from self-employment and property, before expenses.
When Does MTD for Self Assessment Start?
HMRC is introducing Making Tax Digital for self assessment in phases.
| Phase | Date | Income Threshold |
| Phase 1 | 6 April 2026 | Gross income over £50,000 |
| Phase 2 | 6 April 2027 | Gross income over £30,000 |
| Phase 3 | 6 April 2028 | Gross income over £20,000 |
If you match the criteria for the current tax year, you need to register for MTD for self assessment. You need to do that before the first quarter hits.
MTD for Self Assessment Thresholds and Qualifying Income
Now let us look closely at the MTD for self assessment thresholds. The phrase HMRC uses is qualifying income.
Qualifying income means your gross income, or total turnover. It is your total sales before you subtract any expenses or bills. So it is not your profit.
This means that if you are a sole trader turning over £52,000 but your expenses are £10,000, your profit is £42,000. However, because your gross turnover is over £50,000, MTD for self-employed rules still apply to you this year.
Combining Multiple Income Streams
If you have a few different side hustles or income types, you have to add them together. Yes. This is because your eligibility is based on your total combined gross income. And not on what each individual business makes.
Let us look at a quick example of how this calculation works:
| Income Source | Annual Amount |
| Sole Trader Business Turnover | £35,000 |
| Rental Property Income | £20,000 |
| Combined Qualifying Income | £55,000 |
As the combined total goes over the current £50,000 mark, this individual will fall within the first phase of MTD for self assessment from April 2026.
How Does Making Tax Digital Work for Self Employed Businesses?
So, how does making tax digital work for self employed people on a practical level?
Well… you will stop using paper ledger books or basic manual records. Instead, you must log every piece of income and every expense into an approved digital system. Then, the reporting year gets broken down into two main parts.
1. Quarterly Updates
Every three months, you must submit a summary of your income and expenses to HMRC. This means submitting updates four times a year. And remember that these are not full tax returns. You are just sending the totals, categorised correctly, so that HMRC has a running picture of how your year is going.
- Quarter 1 (6 Apr – 5 Jul): Submission deadline is 7 August
- Quarter 2 (6 Jul – 5 Oct): Submission deadline is 7 November
- Quarter 3 (6 Oct – 5 Jan): Submission deadline is 7 February
- Quarter 4 (6 Jan – 5 Apr): Submission deadline is 7 May
Basically, the MTD for Self Assessment deadline for these updates is usually one month after the end of each specific quarter.
2. The Final Declaration
At the end of the tax year, you still submit a final declaration (this is the equivalent of your old tax return). And this is where you add any extra information. You include things like investment income, personal savings interest, or specific tax reliefs. The deadline for this is still 31 January, just like before.
Does MTD Replace Self Assessment Entirely?
A common question we hear is: Does MTD replace Self Assessment? Well, no. MTD for self assessment is not entirely replacing Self Assessment. It is just replacing the old style of filing a single annual Self Assessment tax return form. The legal obligation to declare your income and pay your tax still stays the same. But of course, the mechanism is brand new.
While the old once-a-year filing style is changing, there is still an annual finalisation process involved in making tax digital for self assessment.
Choosing Your MTD for Self Assessment Software
If you want to file your updates successfully, then you must use HMRC Making Tax Digital self employed approved systems.
You generally have two choices while choosing the right software for Making Tax Digital for Income Tax:
- Mainstream Accounting Software: This includes apps like Xero, QuickBooks, or FreeAgent. These track your invoices and connect directly to your business bank account. These software also handle submissions automatically.
- Bridging Software: If you prefer using basic spreadsheets, you can keep doing that. However, you will need a specialised digital “bridge” too. This is required to securely transmit your spreadsheet data directly to HMRC. It is not the most elegant setup. But yes, it is a legitimate option.
We know that picking the right MTD for self assessment software can feel really overwhelming. Especially if you are not naturally tech-savvy. If you need help with MTD for self assessment, just reach out to our Making Tax Digital accountants.
Can I Do My Own Taxes if Self Employed Under MTD?
Yes, absolutely. The law allows you to handle everything personally. This means you can buy the software and log your own receipts. Then you can hit the submit button four times a year, plus the final declaration.
However, the workload is increasing. Under Making Tax Digital for self employed, you are now dealing with tax compliance every single quarter.
Therefore, having an accountant handle it can be well worth the investment.
Do I Need MTD for Self Assessment if I am Already Registered for MTD for VAT?
Yes, you do. It is easy to confuse the two systems. But remember that MTD for self assessment and MTD for VAT are completely separate obligations. This means that if you are registered and compliant for MTD for VAT, it does not automatically enrol you in the income tax system. You must ensure your software is configured to handle both types of submissions. This will keep your business fully compliant.
What Does MTD Mean for Accountants?
If you work with an accountant, MTD changes the working relationship a bit. Rather than having one big conversation in January, your accountant will ideally be looking at your records more regularly.
You will also get more up-to-date tax estimates throughout the year. As a result, there will be fewer or no surprises when the bill arrives.
The Bottom Line
For many UK businesses, MTD for self assessment now represents a major shift in how taxes are managed.
The key to surviving the change is preparation. If you set up compatible software early and understand your qualifying income, you can definitely avoid last-minute panic. By early preparation, you can also avoid the potential HMRC late submission penalty points.
How Accotax Can Help
If you need help with MTD for self assessment or any accounting service, such as bookkeeping, VAT, or year-end accounts, visit Accotax.
We offer a range of packages designed to fit your unique needs.
Reach out, get an instant quote, and let us help you stay compliant!
Disclaimer: The information about “What Is MTD for Self Assessment? 2026/27 Guide” is provided in this article including text and graphics. It does not intend to disregard any of the professional advice.
