MTD Sign Up: What You Need Before You Register

If your books are a mix of paper receipts, bank statements and a mobile phone full of invoice photos, an MTD Sign up can feel like one more job on an already long list. The good news is that Making Tax Digital is manageable when you set it up properly - and it can give you a clearer view of the money coming in and going out.

For many sole traders, landlords and small limited companies, the real issue is not the technology. It is knowing whether MTD applies to them, when they need to act and whether their records are ready before they register.

Who needs to complete an MTD Sign up?

Making Tax Digital for VAT has applied to VAT-registered businesses for several years. If you are registered for VAT, you generally need to keep VAT records digitally and submit VAT returns through compatible software. This applies whether your VAT registration was compulsory or voluntary.

Making Tax Digital for Income Tax is now being introduced in stages. From April 2026, self-employed people and landlords with qualifying income above £50,000 will be brought into MTD for Income Tax. The threshold falls to £30,000 from April 2027 and £20,000 from April 2028. Qualifying income means your total gross income from self-employment and property, before expenses are deducted.

This matters if you are a cab driver, tradesperson, CIS subcontractor, consultant or landlord. You may be used to completing one Self Assessment return each year, but MTD for Income Tax changes the reporting routine. Rather than pulling everything together at year end, you will keep digital records and send quarterly updates to HMRC through compatible software.

Not everyone should register early without checking first. Your obligation depends on your income, tax position and the relevant start date. A landlord with rental income and a separate sole-trader business, for example, needs both sources considered when assessing the threshold.

What to prepare before registering for MTD

Do not treat registration as a box-ticking exercise. A quick check beforehand can prevent missed submissions, duplicated figures and frustrating calls to HMRC later.

First, make sure your HMRC details are correct. Your Government Gateway login, Unique Taxpayer Reference, VAT registration number where relevant, and registered business information should all match HMRC's records. If you have changed address, business name, trading structure or accountant, resolve that first.

Next, choose compatible accounting software that suits how you work. The best option is not always the one with the longest list of features. A sole trader who raises a handful of invoices each month has different needs from a construction firm managing CIS deductions, labour costs, VAT and payroll. What matters is that the software can maintain the required digital records and submit the right information to HMRC.

You also need a workable routine for recording income and expenses. That means entering sales, supplier bills and business costs regularly, then keeping evidence for claims such as fuel, tools, insurance, protective clothing, mobile phone use or mileage. MTD does not change the rules on allowable expenses, but better records make it easier to claim what you are entitled to and support those claims if HMRC asks questions.

How the MTD sign-up process works

Once you have confirmed that MTD applies, the practical process is straightforward. You register through your HMRC business tax account, authorise your software to connect to HMRC and ensure the correct VAT or Income Tax service is selected.

For VAT, take care with timing. Registering part-way through a VAT period or changing software close to a filing deadline can create avoidable complications. Check that the software has imported or entered the correct opening information, and that there is no overlap with a return already submitted by another method.

For Income Tax, the move to MTD means quarterly updates during the tax year, followed by an end-of-period process and a final declaration. Quarterly updates are not necessarily tax bills, but they do rely on accurate records. Treat each update as a useful checkpoint rather than waiting until January to discover that your tax bill is higher than expected.

Common MTD problems worth avoiding

The most common error is assuming a bank feed does all the work. Bank feeds can bring transactions into the software, but someone still needs to categorise them correctly. A payment to a builders' merchant may be materials, tools, repairs or a private purchase. The right category affects both your accounts and tax position.

Another problem is mixing personal and business spending. A separate business bank account is not compulsory for every sole trader, but it makes record keeping far cleaner. It is particularly useful for drivers and subcontractors who make frequent day-to-day purchases and need to distinguish business costs from personal ones.

Finally, do not leave sign-up until the week of a deadline. HMRC registration, software set-up and data checks can take time. Early preparation gives you room to correct errors without the pressure of a missed return or potential penalty.

Get the records right, not just the registration

MTD is meant to reduce the scramble at tax-return time, but it only does that when your bookkeeping is kept up to date. Short And Sons Accountants can help you choose a practical process, prepare your digital records and deal with the reporting requirements around VAT or Income Tax.

Whether you are on the road all day, running a small trade business or managing rental income alongside other work, set aside a regular time each week to deal with your figures. A small routine now is far easier than trying to rebuild a year's records when an HMRC deadline is close.