Making Tax Digital for VAT vs ITSA: What's the Difference (and Why It Matters)

If you’ve spent any time running a business in the UK over the last few years, you’ve probably heard the phrase "Making Tax Digital" (MTD) more times than you’d care to count. It’s been the talk of the accounting world, and for a good reason: it’s the biggest shake-up to the UK tax system in a generation.

But here’s where it gets confusing: MTD isn’t just one thing. It’s a multi-headed beast. Currently, we have MTD for VAT, which is already in full swing, and looming on the horizon is the MTD start date 2026 for Income Tax Self Assessment (ITSA).

I’m Richard, and today I’m going to break down exactly what the difference is between these two streams, why you might soon be dealing with both, and how you can stay on the right side of HMRC without losing your mind.

What is Making Tax Digital (MTD) anyway?

In simple terms, MTD is HMRC’s plan to move the entire tax system into the 21st century. Instead of filing an annual tax return or typing numbers into a web portal once a quarter, businesses are required to keep digital records and use "compatible software" to send their data directly to HMRC.

The goal? To reduce "avoidable errors" (which cost the Treasury billions) and make it easier for businesses to see their tax position in real-time.

MTD for VAT: The Story So Far

MTD for VAT was the first phase. If you are a VAT-registered business with a turnover above the current £90,000 threshold, you should already be doing this. In fact, since April 2022, all VAT-registered businesses: even those below the threshold who registered voluntarily: have been required to follow MTD rules.

The Key Rules for MTD VAT:

• Digital Record Keeping: You can’t just keep a shoebox of receipts. You must record your sales and purchases digitally.

• Software Filing: You must use software that connects to HMRC via an API. You can’t manually type your figures into the old HMRC gateway anymore.

• Digital Links: If you use more than one piece of software (like a separate invoicing tool and a spreadsheet), the data must flow between them digitally. No "copy and paste" allowed!

If you’re struggling with your VAT filings, our VAT advice services can help you get back on track.

MTD for ITSA: The 2026 Game Changer

While MTD for VAT is already "business as usual," the next big wave is MTD for Income Tax Self Assessment (ITSA). This is the one that is going to affect millions of sole traders and landlords.

The MTD start date 2026 is the date to circle in red on your calendar. Specifically, April 6th, 2026.

Who is affected and when?

HMRC is rolling this out in stages based on your "qualifying income" (your total turnover from self-employment and rental income combined):

1. From April 2026: Sole traders and landlords with an income over £50,000.

2. From April 2027: Those with an income over £30,000.

3. From April 2028: Those with an income over £20,000 (this stage is currently under review for the best way to implement, but it's on the roadmap).

If you fall into these brackets, the days of doing one big tax return every January are coming to an end. Instead, you'll be providing quarterly updates to HMRC.

VAT vs ITSA: The Main Differences

It’s easy to get them mixed up, but they cover completely different taxes and have different rules.

Feature	MTD for VAT	MTD for ITSA (Starts 2026)
Tax Covered	Value Added Tax (VAT)	Income Tax
Who is affected?	All VAT-registered businesses	Sole traders and landlords >£50k income
Submission Frequency	Usually Quarterly	Quarterly Updates + Final Declaration
Reporting Focus	Sales and VAT collected/paid	Business/Property income and expenses
Deadline	1 month + 7 days after period end	7th Aug, Nov, Feb, and May

Crucially, being in one does not automatically put you in the other. However, many successful SMEs will find themselves caught by both. If you're a VAT-registered sole trader earning £60,000 a year, come April 2026, you'll be filing quarterly for VAT and quarterly for Income Tax.

That’s a lot of admin. This is where finding the right accounting services in the UK becomes a massive time-saver.

The "Excel" Loophole: MTD Bridging Software

One of the biggest worries I hear from clients is: "Do I have to learn how to use complex accounting software? I love my Excel spreadsheets!"

Good news: You don't necessarily have to ditch the spreadsheets. This is where MTD bridging software excel comes into play.

Bridging software is a clever bit of tech that acts as a "bridge" between your spreadsheet and HMRC. It takes the final figures from your Excel sheet and submits them to HMRC’s systems in the required digital format.

While full cloud accounting software (like Xero or QuickBooks) offers more features like automated bank feeds, bridging software is a fantastic, low-cost way to stay compliant with MTD rules while keeping the workflow you’re comfortable with. Whether it's for VAT now or for ITSA in 2026, bridging tools are a valid way to meet the "digital link" requirements.

Why Does This Matter Right Now?

You might be thinking, "April 2026 is ages away, Richard. Why are we talking about this now?"

Two reasons: Preparation and Penalties.

1. Transition Time: Moving from a paper-based or manual system to a digital one takes time. You need to choose software, set up your records, and potentially change how you track expenses. Starting now means you won't be part of the mad rush in March 2026.

2. The Penalty Point System: HMRC is moving to a new points-based penalty system. If you miss a deadline, you get a point. Accumulate too many points, and you get a financial penalty (usually £200). With four updates a year plus a final declaration, the chances of missing a deadline increase if you aren't organized.

If you’re worried about the transition, checking out our self-assessment accountant services can help you find a pro who specializes in MTD for individuals.

How to Prepare for the 2026 Shift

If you think you’ll be affected by the 2026 MTD for ITSA rollout, here are three things you should do this month:

• Check your turnover: Look at your 2024-25 tax year figures. If your combined business and rental income is over £50,000, you are in the first wave.

• Go Digital Now: Don't wait for the mandate. Start using a digital tool (or a properly formatted spreadsheet) to track your income and expenses today. It makes the tax return preparation much smoother.

• Consult an Expert: A good accountant isn't just someone who files your taxes; they are a partner in your business growth. They can advise you on the best software (bridging or full cloud) and ensure your "digital links" are airtight.

Closing Thoughts

MTD doesn't have to be a headache. Whether it's the VAT rules you’re already following or the new ITSA rules coming in 2026, the key is staying ahead of the curve. At Accountant Search, we specialize in matching SME owners like you with local accountants who understand these digital shifts inside and out.

Don't leave it until the 11th hour. Get your digital house in order now, and you'll find that tax season becomes just another quiet day at the office.