Check you can sign up
The service confirms your qualifying income is over the £50,000 threshold, that you have compatible software, and that your Government Gateway account is the one linked to your Self Assessment record.
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Qualifying income
Gross self-employment turnover plus gross rents, before any expenses, from your latest tax return. Over £50,000 means MTD applies from the first phase.
From your records£ - Section
Your MTD-compatible software
The service asks whether you have it; you cannot send updates without it. Free and paid options are on HMRC’s list, and some spreadsheet bridging tools count.
From your records - Section
Government Gateway user ID
The one you use for Self Assessment, so the sign-up attaches to the right record. Your UTR and National Insurance number are checked against it.
From your records