Making Tax Digital (MTD): A Guide for UK Small Businesses

Who needs to follow these new rules on MTD?

Knowing if MTD for ITSA applies to you is important, as the rollout is happening in phases. You won’t have to join immediately if your gross income is below the first threshold. The rules apply from the start of the tax year after your income crosses the threshold.

Here is a breakdown of who is affected and when:

• From 6 April 2026: This applies if your total qualifying income included from self-employment or property rental is more than £50,000 a year.
• From 6 April 2027: The rules will then extend to those with a total qualifying income of more than £30,000 a year.

HMRC has stated that the position for general partnerships, those with income below £30,000, and other groups will be reviewed. 

This is to ensure the system is ready and that the transition is manageable for all taxpayers. You can always check your eligibility on the government’s website to be certain of your start date.

Step-by-Step Process for Managing MTD

When people hear about quarterly submissions, they often assume it means filing four full tax returns a year. That’s not the case. The process is simpler and involves three main tasks:

1. Use MTD-Compatible Software

• Record all income and expenses digitally

• Spreadsheets and paper ledgers are no longer acceptable

• Choose software that links directly with HMRC’s systems

2. Submit Quarterly Income and Expense Summaries

• Send a digital summary to HMRC every three months

• Reports are high-level, not detailed tax returns

• Helps track your estimated tax liability throughout the year

3. Complete a Final Declaration at Year-End

• Confirm the accuracy of your quarterly submissions

• Include other income sources (e.g. savings interest)

• Claim any eligible reliefs or allowances

• This replaces the traditional Self Assessment tax return

Choosing your MTD-ready software

Selecting the right software is key to staying compliant with Making Tax Digital (MTD). Since HMRC doesn’t provide its own, you’ll need to choose a commercial option—and there are plenty out there. Here’s what to consider:

• Start with HMRC’s approved list: These tools are confirmed to connect with HMRC’s systems and handle submissions correctly. That peace of mind is worth it.
• Match the features to your needs:
  • Some tools only handle MTD submissions.
  • Others offer a full accounting suite, including:
    • Invoicing
    • Expense tracking with credit card or bank feeds
    • Financial reporting
• All-in-one platforms are often the most time-saving choice — especially if you’re managing more than just tax.
• Prefer using spreadsheets? Bridging software can convert and submit your data. It’s a valid workaround, but many find switching to integrated tax software easier in the long run.

Is this just more work? Not really. Here’s what going digital actually gets you

We get it, switching systems can feel like just another admin headache. But once you’re set up, Making Tax Digital (MTD) offers some real benefits—especially for small businesses, which it’s designed to help.

Clearer financial visibility

• Know how much profit you’ve made, anytime
• See an estimate of your upcoming tax bill in advance
• Plan cash flow with fewer surprises come January

No more blind panic when tax season rolls around—you’ll have a clearer picture all year long.

Fewer errors and late-night stress

• Let software do the maths (and reduce costly mistakes)
• Avoid last-minute scrambles by updating throughout the year
• Keep your National Insurance and tax figures accurate

So, no more squinting at spreadsheets at midnight before the deadline.

Less end-of-year chaos

• Quarterly updates mean you’re already 90% done
• The Final Declaration becomes a quick review—not a full rebuild
• Ditch the shoebox of receipts (we’ve been there…)

Easier collaboration with your accountant

• Share real-time data — no more bulky email attachments
• Your accountant can log in and access what they need
• Faster responses, smoother service

Less back and forth. More time spent actually running your business.

Your MTD timeline: key dates to remember

Keeping track of dates is vital for good planning and avoiding any last-minute stress. Here’s a simple table of the important MTD milestones for digital income tax.

The timeline in which HMRC introduces these changescan sometimes be delayed or adjusted, so it’s always wise to check for the latest updates.

These dates have been subject to change in the past as the government refines the process. It’s always a good practice to stay informed by checking for official announcements from HMRC. 

Your income tax service provider or accountant will also keep you informed of any changes that affect you.

How do I get my small business ready for Making Tax Digital (MTD)?

Preparing your small business for Making Tax Digital (MTD) now will save stress later. You don’t need to do everything at once; breaking the process into clear steps makes the transition to digital income reporting far smoother.

Choose MTD-Compatible Accounting Software

Your first step is selecting MTD-compatible software. Many small businesses already use digital tools like Google Analytics to track website activity or platforms to manage workplace pensions. Adding accounting software ensures you can record income and expenses correctly and stay compliant with HMRC.

Build Strong Digital Record-Keeping Habits

Start using your chosen software immediately. For example, take photos of receipts and upload them straight away rather than saving them for year-end. This habit turns a daunting annual task into a quick daily routine while strengthening your financial record keeping.

Work with Your Accountant or Tax Agent

If you already use Accounting Services, ask your accountant about their MTD plans. A tax professional can guide you through choosing software, setting up your account, and even managing the MTD sign-up process for you. They can also provide valuable income tax guidance to keep your business on track.

Sign Up for MTD for ITSA

When ready, you must formally sign up for MTD for Income Tax Self Assessment (ITSA) via HMRC’s online portal. Without this step, you won’t be able to submit your first digital update. Registering in advance avoids last-minute delays.

How Sleek helps you go digital for MTD (and avoid tax season chaos)

The move to a fully digital tax system is a significant one—there’s no denying it. But it’s a change with a clear purpose, aiming to give you a better grasp of your business’s financial health and make the entire tax process less painful.

Understanding Making Tax Digital income requirements is the first part of the process.

By taking the time to understand the rules and preparing in advance, you can make this a smooth and even beneficial transition for your business, at least in the long term.

Getting it right takes expert guidance. At Sleek, we help UK business owners get MTD-ready without the stress. From choosing the right cloud accounting tools to keeping your digital records spotless, our team’s here to make tax simple.

Got questions? Speak to our team today and let’s get your business set up for MTD success.