The First MTD ITSA Deadline (August 2026): Do You Actually Have to Pay Tax?

Author: Phillips & Co Accountants, Chester

Date: 13 July , 2026

As we settle into July 2026, a historic milestone in the UK tax system has just been reached. The very first reporting quarter of Making Tax Digital for Income Tax Self Assessment (MTD for ITSA) officially came to a close on 5th July.

Now, sole traders and landlords with qualifying incomes over £50,000 are facing their first major digital deadline: 7th August 2026.

As the proactive accountants Chester businesses and landlords trust to navigate complex HMRC changes, our office has received a flood of calls this month. Many local owners are panicking about an impending “August MTD tax payment”. Because this is the biggest shift in the UK tax system in decades, there is a lot of misinformation floating around. We want to clear up the confusion around what is actually due this August, and how to keep your business fully compliant.

Do I Have to Make a Tax Payment on 7th August?

Let’s address the biggest source of anxiety first. No, you do not have to make a mandatory tax payment on 7th August.

One of the most common misconceptions about MTD for ITSA is that quarterly reporting means mandatory quarterly tax bills. Thankfully, the timeline for paying your statutory tax remains exactly the same as under the old Self Assessment system. Your mandatory tax payments are still due on 31st January and 31st July.

The 7th August deadline is strictly an information reporting deadline for your Quarter 1 update.

The New Option: Voluntary Pay-As-You-Go

However, there is a very good reason “payments” are part of the conversation right now.

When you submit your quarterly data in August, your MTD software will generate a real-time estimate of the tax you owe so far for the year. Armed with this figure, HMRC now allows you to make voluntary pay-as-you-go payments towards this estimated bill via your digital account.

Many of our clients are choosing to make an August MTD payment entirely by choice. Treating your tax bill like a regular monthly or quarterly business expense is a brilliant way to ease your cash flow and completely avoid the dreaded massive lump-sum shock next January.

What Actually Needs to be Submitted by 7th August?

By the 7th of August 2026, you (or your accountant) must submit a digital summary of your business income and expenses from 6th April to 5th July.

To remain legally compliant, you cannot just log into a government portal and manually type your numbers in. You must:

• Use MTD-compatible accounting software (such as Xero, QuickBooks, or FreeAgent).
• Reconcile your accounts, ensuring every bank transaction, invoice, and receipt for the quarter is correctly categorised into HMRC’s specific brackets.
• Use a “digital link” to submit the data directly from your software to HMRC’s system before midnight on the 7th.

Beware the New HMRC Penalty Points

Because this is a brand-new system, HMRC has introduced a new penalty points model.

While the government has announced a ‘soft landing’ period for late submission penalties during this 2026/27 transition year, ignoring the deadline is a bad idea. Establishing a smooth digital workflow now is essential so you aren’t scrambling when your end-of-year Final Declarations are due—which will attract immediate, unforgiving financial penalties if they are late.

Don’t Face Your First MTD Deadline Alone

Transitioning from a single annual tax return to quarterly digital reporting is a major administrative shift. If you are struggling with your software, haven’t reconciled your first quarter yet, or are worried about hitting the wrong button on your first submission, don’t leave it to chance.

Finding the right financial partner makes all the difference. You don’t just need someone to crunch numbers; you need a local, forward-thinking team who understands the Cheshire economy and can take the stress of HMRC deadlines completely off your shoulders.

At our Chester office, we are actively helping landlords and sole traders review their Q1 data, check their digital links, and seamlessly submit their first MTD updates. We can also advise you on whether making a voluntary August tax payment makes sense for your current cash flow.

The deadline is fast approaching. Contact our Chester team today to get your MTD submissions sorted before the August rush. Let us handle the digital heavy lifting, so you can get back to running your business.

Disclaimer: The information contained in this article is for general guidance only and does not constitute bespoke tax or financial advice. Tax rules (and HMRC’s interpretation of them) are subject to change. Always consult with a qualified accountant regarding your specific circumstances before taking action.