Your marketplace seller report is not your MTD qualifying income

The short answer

Do not copy a platform's annual seller-report total or a net bank payout straight into an MTD threshold check. HMRC says the statutory platform report covers a calendar year and shows the amount earned on that platform after fees, commission or taxes deducted by the platform, broken down by calendar quarter. HMRC also says that report does not replace your normal business records or tax calculations.

MTD qualifying income is a different measure. HMRC generally assesses it from gross self-employment and property income using the relevant Self Assessment return, but annualisation, amendments, ceased sources, jointly owned property and residence rules can alter the amount assessed. One platform's report can therefore use a different period, a different definition and only part of the income that belongs in the MTD start-date test.

Four numbers, four jobs

These figures may be connected, but they are not interchangeable:

1. The platform's annual seller report

Under the digital-platform reporting rules, a platform operator may need to collect and report seller information. If it reports your information to HMRC, it must give you a copy. HMRC describes that copy as showing the total earned for the calendar year, less fees, commission or taxes deducted by the platform, with calendar-quarter breakdowns.

That makes it useful evidence and a valuable cross-check. It does not make it a ready-made turnover figure. Field labels and the deductions included can differ from the gross sales and expense records needed for accounts. Read the report's definitions before using any total.

2. The payout in your bank

A payout is a settlement. It can reflect sales, refunds, platform and payment fees, reserves, chargebacks, reimbursements, currency conversion and timing differences. It is useful for proving that your recorded activity eventually connects to cash, but it is not automatically sales, profit or qualifying income.

3. Your Self Assessment business turnover

This comes from the records for the relevant business and tax year, prepared using the accounting basis and tax rules that apply to you. The underlying platform exports may help you build and support it, while expenses such as platform fees are dealt with separately from the turnover figure where appropriate.

4. Your MTD qualifying income

For the start-date test, HMRC generally combines the gross income from every relevant self-employment and property source on the relevant return. A £24,000 marketplace sole trade plus £9,000 of another sole trade or property income can therefore produce £33,000 of qualifying income even though no single platform shows more than £30,000.

Calendar year and tax year do not line up

A platform's 2026 annual report covers 1 January to 31 December 2026. The UK 2025/26 tax year ends on 5 April 2026, and the 2026/27 tax year starts on 6 April 2026. This means the 2026 platform report crosses two UK tax years.

The reverse is also true: one UK tax year normally needs records from parts of two calendar years. For example, the 2026/27 tax year includes 6 April to 31 December 2026 and 1 January to 5 April 2027. Even a calendar-quarter breakdown does not create the five-day split at 5/6 April, so keep transaction-level or sufficiently detailed period records.

A safe reconciliation route

1. Keep the annual information copy. Save the exact file or statement the platform says it reported, together with its definitions.
2. Export the detailed records for the correct period. Use transaction, order, fee, refund and settlement data that can be filtered to your tax or accounting period.
3. Identify what each column means. Check whether sales include tax, shipping or discounts; whether refunds and fees are separate; which currency is used; and which event controls the date.
4. Build the business records. Record income and expenses using the method that applies to your business. Do not force a platform's net report to behave like a gross-sales ledger.
5. Reconcile to payouts separately. Bridge recorded activity to bank deposits and explain reserves, timing and other adjustments instead of changing sales to make the bank match.
6. Cross-check the annual seller report. Explain the gap between its defined total and your records. Do not add both sets of figures together.
7. Start with the Self Assessment figures HMRC uses for the MTD threshold. Apply any HMRC rules that alter them, then combine only qualifying self-employment and property amounts.

If a report is unclear, ask the platform what the fields include. If the correct tax treatment or timing is unclear, ask a qualified tax professional. QuarterReady can organise the questions, but it cannot decide those facts from one exported number.

What MTD quarterly updates actually use

HMRC says compatible software adds together your digital records for each business and sends totals for the income and expense categories used. Quarterly updates are summaries, not tax returns, and HMRC does not receive the individual receipt or invoice records in the update.

A marketplace CSV may supply data to your record-keeping workflow. HMRC lists CSV import/export and file download/upload as digital-link methods when moving digital records between relevant software, but downloading a marketplace file does not by itself create compliant MTD records. The export still needs the right period, categories and checks.

For standard periods, each update is cumulative from 6 April; for calendar periods, from 1 April. Use the first-quarterly-update checklist for the current periods and deadlines, or the spreadsheet and bridging-software guide if you intend to keep records in a spreadsheet.

Seven mistakes to avoid

• using the net bank payout as turnover;
• putting a whole calendar-year platform report into one UK tax year;
• treating a report that is already after platform deductions as gross sales, then deducting the same fees again;
• adding the annual seller report on top of sales already in the books;
• checking only one marketplace when the same sole trade sells through several;
• forgetting other self-employment and property sources in the MTD qualifying-income total;
• assuming a platform-reporting threshold is a tax-free allowance or an MTD threshold.

What to do next

1. If you only need your likely MTD start date, start with the relevant return and read the MTD threshold guide. Use the QuarterReady indicative checker, then confirm the result with HMRC's official guidance and checker.
2. If the bank does not match the statement, use the browser-only payout worksheet to isolate the difference.
3. Keep a one-page bridge showing platform report → business records → bank settlements. That is more useful than pretending the three totals should be identical.
4. Verify the final position with HMRC's official guidance or a qualified tax professional.

Sell on Etsy? The Etsy MTD records guide maps its current Orders, Etsy Payments Sales, monthly statement and Deposits downloads to this workflow.