Making Tax Digital is live: what it means if you also file in America

Figures relate to tax year 2025-26 (UK) · 2025 (US)

One annual return used to cover the British side of a freelance year. That changed in April 2026. Making Tax Digital now asks more of sole traders and landlords above the income threshold. They send quarterly updates, keep digital records, and make a final declaration at the end.

None of it changes what America wants. So a dual filer now runs two reporting rhythms at once, on two different tax years. This guide covers what the new regime actually requires, and how to run it without doubling the work.

Key takeaways

• Quarterly updates replace nothing on the American side, so both sets of obligations run together.
• Entry depends on qualifying income from self-employment and property, measured before expenses.
• Digital records are the real change, because a shoebox of receipts no longer satisfies the rules.
• Update deadlines fall on 7 August, 7 November, 7 February and 7 May.
• The final declaration replaces the old return and still lands by 31 January.
• A points-based penalty regime applies to late submissions, so small slips accumulate.
• Well-organised digital records make the US return quicker, which is the one genuine upside.
• Property income and trading income count together towards the entry threshold.

What is Making Tax Digital for Income Tax?

It is HMRC's replacement for the annual Self Assessment cycle for sole traders and landlords. You keep digital records, send quarterly summaries through compatible software, then confirm the year with a final declaration. The tax itself does not change, only how you report it.

The quarterly updates are summaries rather than returns. They carry totals by category, not a computation, and no tax falls due when you send one. According to HMRC guidance, the figures are cumulative, so a later update corrects an earlier one rather than standing alone.

Who has to join, and when?

Entry depends on qualifying income. That means gross income from self-employment and property, before any expenses. The first wave covers people above £50,000, who joined from April 2026. A £30,000 threshold follows in April 2027, and a £20,000 threshold in April 2028.

HMRC looks at the return you filed two years earlier to decide. So the 2024-25 return drove entry for 2026-27. That caught out anyone with a single unusually strong year. Once you are in, you stay in even if income later falls.

Our guide to registering for Self Assessment covers the step before this one. It still applies to anyone newly self-employed.

The new calendar, and how it collides with the American one

Four updates, one declaration, and an American return that ignores all of them. The British quarters run from 6 April, while American estimated payments run on the calendar year. Neither authority adjusts for the other.

Laid out that way, the year contains eight or nine fixed dates rather than two. In our practice, that density is what trips people up, not the complexity of any single filing.

The mismatch also reaches your cash planning. A British payment on account falls due on 31 July. That date sits between two quarterly updates, just after an American estimated payment. Neither calendar makes room for the other, so the cash flow needs a plan of its own.

What counts as a digital record?

Each item of income and expenditure recorded digitally, at the level of the individual transaction. A spreadsheet can qualify if bridging software connects it to HMRC. What no longer works is a folder of receipts totalled once a year. Accuracy alone does not save it.

The record has to capture the amount, the date and the category. Bank feeds and receipt-capture apps do most of this automatically. So the switch is administrative rather than accounting.

Choose the software before the quarter starts rather than during it. Per HMRC guidance, only products on its compatible list can submit. Moving mid-year means rebuilding records you entered elsewhere.

Does Making Tax Digital change what America sees?

Not directly, and that is the point worth understanding. Your US return still reports the same business profit under American rules, on the calendar year. The quarterly British updates never reach the IRS, and no American form corresponds to them.

But the underlying records matter to both. A clean digital ledger split by category makes the Schedule C rebuild far quicker. The raw transactions are already there. Our guide to estimated tax payments from the UK covers the American rhythm that continues alongside.

The two systems still measure profit differently. Britain's cash basis is now the default for most sole traders. American rules treat timing, mileage and home working their own way. So one set of records feeds two different computations.

What about landlords with property on both sides?

Property income joins on the same basis as trading income, and the two add together for the threshold test. A landlord with £30,000 of rent and £25,000 of freelance work sits above £50,000. The combined figure decides it. American owners then report the same property again under different rules.

The divergence is sharpest on capital costs. Britain restricts finance costs on residential lets to a basic rate credit. America allows mortgage interest against rental profit.

It also expects depreciation whether or not you claim it. So the same flat can show a profit in one country and a loss in the other.

Keep the property ledger separate from the trading ledger from the first day. Splitting them afterwards is tedious work, and both authorities ask questions about individual properties rather than about totals.

A worked example

The figures here are illustrative. Take an example. A designer in Bristol holds US citizenship and bills £74,000 a year. She works from a spare room and files in both countries.

Her qualifying income sits above £50,000, so she joined in April 2026. She now records each invoice and expense in compatible software. She sends four updates, then makes a final declaration by 31 January. Her British tax bill stays exactly where it was.

On the American side she still files a return, still claims credit for British tax, and still watches her self-employment position. What changed is her record keeping, which now produces both sets of numbers instead of one.

What happens if an update is late?

You collect a penalty point rather than an immediate fine. Points accumulate across the year, and a financial penalty follows once you reach the threshold for your filing frequency. Late payment penalties run separately, based on how long the tax stays outstanding.

Points expire after a period of compliance. The system catches patterns rather than one bad month. Still, quarterly deadlines produce four times the opportunities to slip, and the points sit alongside American penalties that follow their own rules.

Keep evidence of any technical failure too. Software outages happen. HMRC expects a record made at the time, not a description from memory months later.

Can you be exempt?

Some people can, though the categories are narrower than the interest in them suggests. Exemption covers people who cannot use digital tools for reasons of age, disability, location or religion, plus a few specific taxpayer types. Income below the threshold keeps you out until a later phase rather than permanently.

Living abroad does not create an exemption. A landlord in Madrid with British property joins on the same terms as one in Manchester, provided the qualifying income test bites.

How to set this up alongside a US return

The goal is a single set of records that answers both countries. That takes a little design at the start and saves a great deal of reconstruction later. This is the sequence we use with dual filers.

1. Check the qualifying income figure on the return HMRC uses to decide your entry date.
2. Pick compatible software and confirm it handles both foreign currency and your expense categories.
3. Set the categories up so British and American expense headings both come out of the same ledger.
4. Record transactions as they happen rather than in a rush before each quarterly deadline.
5. Diarise the four update dates alongside the American estimated payment dates.
6. Reconcile the cumulative position at quarter three, when there is still time to fix errors.
7. Complete the final declaration, then rebuild the calendar year for the American return.

Do the quarterly updates have to be perfect?

No, and treating them as final accounts wastes hours you do not need to spend. Each update is cumulative, so a later one corrects whatever came before, and the final declaration settles the year properly. Reasonable care each quarter beats perfection against a deadline.

That said, systematic errors repeat themselves. A misconfigured expense category produces the same wrong figure four times, then needs unpicking at the declaration stage. Our clients who reconcile once at quarter three rarely meet that problem at all.

Mistakes and penalties we see in the first year

• Treating a quarterly update as a tax bill, then panicking when nothing is due.
• Leaving the software choice until the first deadline is already close.
• Recording annual totals rather than transactions, which fails the digital record requirement.
• Assuming the British quarters somehow satisfy American estimated payments.
• Forgetting that the final declaration still carries the 31 January deadline.
• Letting penalty points accumulate quietly because no fine arrives immediately.
• Sending an update for the wrong period, which then repeats through every cumulative figure after it.

None of these are expensive on their own. Together they turn a manageable change into a year of catching up, and the American return then inherits whatever mess the British records are in.

Is there any upside for a dual filer?

Yes, though it takes a year to appear. Transaction-level records make the American return quicker to prepare. Nobody has to rebuild a year of spending from bank statements. Currency conversion also gets easier when each item carries its own date.

Better records tend to produce better claims as well. Expenses that used to disappear between the shoebox and the spreadsheet now sit in the ledger, and both returns benefit from that. Our clients who moved early describe the second year as materially easier than the first.

There is a quieter benefit as well. Quarterly contact with your own figures makes a bad year visible in August rather than the following January. That leaves real time to act.

How US UK Tax Accountants helps

We set the ledger up once, in a way both countries can read. Then we run the quarterly updates and the final declaration alongside your American filings. Most of the value sits in the design rather than the submissions. If the regime already applies to you this year, get in touch with your figures and we will map it against your UK Self Assessment.

Last reviewed 19 September 2026. This article is general information and not personal tax advice. Thresholds and dates for Making Tax Digital have moved more than once, so confirm the position for your own year before relying on it.