VAT-Registered Sole Traders: Why You Probably Do Not Need New Software for MTD For Income Tax.

If you are a VAT-registered sole trader and you have been reading about Making Tax Digital for Income Tax, you might have come away feeling a bit overwhelmed.

There are articles comparing software, reviews of platforms you have never heard of, recommendations to switch to whichever tool is cheapest, and calls to action that assume you are starting from scratch. It is enough to make anyone think they have a major project ahead of them.

In reality, your position is probably much better than those articles make it sound. If you are VAT-registered and you have been using MTD-compatible software since April 2022, the platform you already use almost certainly handles MTD for Income Tax as well. You do not need a new plan, you do not need to migrate, and you do not need to buy anything additional.

You are actually in the strongest possible position for MTD for Income Tax, because the hardest parts of compliance, which are choosing software, building bookkeeping habits, and getting bank feeds working, are already done. If you want a broader picture of what MTD actually requires of sole traders, our main MTD guide walks through the thresholds, deadlines and timeline in full.

This post walks through what changes for VAT-registered sole traders entering MTD for Income Tax, what stays the same, and the three small steps you need to take to be compliant.

Why Your Software Already Does the Job.

All VAT-registered businesses have been legally required to use MTD-compatible software for VAT returns since April 2022, and the major platforms used by UK sole traders, including Xero, QuickBooks, FreeAgent, Sage and Coconut, have all been updated to support MTD for Income Tax as well as MTD for VAT. We have written a separate post on choosing MTD software as a UK sole trader if you ever decide to look at switching.

The same software that submits your VAT returns can submit your MTD ITSA quarterly updates, the same digital records you keep for VAT count as digital records for Income Tax, and the same bank feeds, expense categorisation and reporting features all work for both.

What this means in practice is that the upgrade is not a software change, it is a workflow change.

What You Actually Need to Do.

There are three things, and none of them require buying new software, migrating data, or changing your bookkeeping habits.

1) Sign up formally for MTD for Income Tax

MTD for VAT and MTD for Income Tax are separate HMRC programmes with separate registrations, so being enrolled for one does not automatically enrol you in the other. You need to register for MTD for Income Tax specifically through your Government Gateway account.

The sign-up takes around ten minutes, and you only do it once. The route is gov.uk, sign in to your Government Gateway, and follow the link to sign up for Making Tax Digital for Income Tax. Have your Unique Taxpayer Reference and National Insurance number ready before you start.

If you have an accountant, they can register you through their Agent Services Account instead, and either route works equally well.

2 ) Authorise your existing software for MTD ITSA submissions

Your software is already authorised with HMRC for VAT submissions, but it needs to be separately authorised for Income Tax submissions. This is a one-step process inside the software, usually a single confirmation screen that appears when you first try to submit an ITSA quarterly update.

Until you complete this step, the software cannot submit your quarterly updates even if it is already submitting your VAT returns, because the authorisation is specific to each programme.

3 ) Adjust to the additional quarterly submissions

This is the only part that requires you to actually change anything. Your VAT returns continue on the same schedule they have always been on, based on your VAT period, but your MTD ITSA quarterly updates run on fixed tax year quarters that may not align with your VAT periods.

The MTD ITSA quarters are 6 April to 5 July, 6 July to 5 October, 6 October to 5 January, and 6 January to 5 April, and the submission deadlines are around five weeks after each quarter ends.

For a VAT-registered sole trader, this means there will be months when you have both a VAT return and an ITSA quarterly update due close together. The software does the calculations for both, but the cadence is genuinely busier than VAT alone, so it is worth getting your head around that.

What You Do Not Need to Worry About.

A few things commonly stress people who are reading MTD content as if they are starting from scratch.

You do not need to choose software, because you already have it.

You do not need to migrate years of records anywhere, they stay where they are.

You do not need to change your bank feeds, your invoicing, or your day-to-day bookkeeping, because everything continues as it does now. If your current bookkeeping habits are not quite where you would like them to be, our guide to setting up a simple sole trader bookkeeping system walks through the routine that makes MTD straightforward.

You do not need to upgrade to a higher-priced plan in most cases. If you are on Xero Grow, QuickBooks, FreeAgent or Sage at any tier that handles VAT, you almost certainly have the features you need for MTD ITSA already.

The exception is if you are on a very basic VAT plan that does not include income tax features. This is rare in 2026, because most providers have rolled MTD ITSA support into their existing plans rather than charging separately for it. It is worth checking with your software provider once, but it is not worth assuming you have a problem.

What Stays the Same.

Your VAT obligations are unchanged. The threshold remains £90,000 of taxable turnover on a rolling 12-month basis, the submission schedule continues on your existing VAT period, and the amount you charge customers and reclaim from suppliers is unchanged. None of this is affected by MTD for Income Tax.

Your Self Assessment routine is changing in shape rather than substance. The annual tax return you have been filing each January is replaced by quarterly updates plus a Final Declaration, and the tax you owe and the payment dates remain the same. The 31 January payment deadline is also unchanged, and the penalties for missing it are unchanged too, which we covered in detail in our post on the real cost of filing late.

What changes is the rhythm, from once a year to quarterly. The software absorbs most of the additional work, but the discipline of keeping your records current matters more under MTD than it did under annual reporting.

When You Might Want to Switch Software.

For most VAT-registered sole traders, staying with their current platform is the right answer, but there are a few situations where MTD for Income Tax is the right moment to reconsider.

If you have been unhappy with your current software for other reasons, this is a natural switching point. The cleanest time to change platforms is at the start of a tax year on 6 April, with a quarterly boundary as the next-best option.

If your current software does not include MTD for Income Tax in your existing plan, it is worth checking what an upgrade costs versus switching to a competitor. Our guide to choosing MTD software for UK sole traders is a useful starting point if you are reconsidering.

If your accountant uses a different platform from yours, the inefficiency may be costing you in fees. Working in the same system as your accountant typically saves time at year end, so it is worth a conversation before you make any decisions.

The Action Plan

If you are VAT-registered and reading this, here is what to do this week.

Open your software and check that MTD for Income Tax is supported on your current plan, because the provider's help documentation will confirm it quickly. If yes, no action is required on the software side.

Sign up for MTD for Income Tax through your Government Gateway account at gov.uk if you have not already done so, which only takes five to ten minutes.

Authorise your software for ITSA submissions. This usually happens automatically the first time you prepare a quarterly update, but checking now removes the risk of last-minute friction.

Add the four MTD ITSA quarterly deadlines to your calendar alongside your existing VAT period dates, because knowing them in advance is the easiest way to avoid being caught off guard.

That is the entire compliance plan for a VAT-registered sole trader entering MTD for Income Tax. Most of it is a single afternoon of admin, and none of it requires new software.

If any of this feels less clear than you would like, or you want a second pair of eyes on your specific setup before April, that is exactly the kind of thing a Done With You session is built for.

Blog content is for information purposes only and over time may become outdated as the tax landscape is constantly changing, although we do strive to keep it current and up to date. It is written to help you understand your taxes and is not to be relied upon as professional accounting, tax and legal advice. For additional help please contact a professional adviser.