MTD ITSA Quarter Helper Quarterly figures and deadline reminders for UK sole traders

Making Tax Digital for Income Tax

Get your quarterly figures straight — before the deadline

Add your income and expenses, see the totals your quarterly update should show, then copy, print or download a summary you can hand to your accountant.

This is a free planning aid, not HMRC-recognised filing software. It cannot send anything to HMRC for you.

Your setup

Two choices. Everything else is optional.

Which update periods do you use?

Not sure? Standard is the default.

Only used on the printed summary and the exported file names.

Tax year timeline

Each update covers from the start of the tax year to the end of that period.

Add your figures

Dates are checked against the period above.

What your quarterly update should show

Income (turnover)
£0.00
Expenses
£0.00
Net profit
£0.00

Income (turnover)
£0.00
Expenses
£0.00
Net profit
£0.00

Expenses by category

Take it out of the browser

Your figures stay on this device.

Downloads a calendar file with the four dates.

Restore from backup

No file chosen

Restoring replaces everything currently stored in this browser.

Do you have to use MTD for Income Tax?

Three yes/no questions.

Is your total income over £50,000?

Total income before expenses.

Are you registered for Self Assessment?
Have you sent a Self Assessment tax return in the last two years?

The three things people ask first

What actually gets sent?

Totals only.

What if I miss a deadline?

Penalty points.

Can this tool file for me?

No.

Where the dates come from

Dates checked 27 September 2026.