From April 2026, if you have an annual combined income over £50,000 from self-employment or property, you'll need to:
This replaces the old Self Assessment process. You won't be able to use the HMRC Gateway — you'll need MTD IT-recognised software like TaxNav.
Quarterly updates are for reporting only. Your final tax bill is still paid at the end of the tax year.
TaxNav is designed to be affordable for sole traders and landlords.
Both Plans Include
HMRC-recognised software
Self-employment + UK property + Foreign property
Browser-based - works on any device
UK-based support
Secure, encrypted data storage
Enter transactions directly in TaxNav via your favourite device, or connect your existing spreadsheet using our import worksheet. TaxNav supports Excel.
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TaxNav summarises your income and expenses for each quarter, no detailed transactions are sent to HMRC. Review the figures, and see your estimated tax bill in real time.
When you're ready, submit your quarterly update directly to HMRC through TaxNav. If you need to make any income/expense refinements, you can do these in the next quarter’s submission. At year-end, add any final adjustments (dividends, bank interest, etc. ) and file your final declaration.
Freelancers, consultants, tradespeople, contractors, side businesses — if you file Self Assessment for self-employment income, TaxNav handles your MTD IT submissions.
UK property, foreign property, or both. One TaxNav licence covers all your rental income. No separate accounts needed.
Got income from both? No problem. TaxNav supports any combination under one account — self-employment, UK property, and foreign property.
TaxNav retrieves your CIS deductions directly from HMRC. Always know what's been deducted to ensure it’s claimed back.
If you have employment income alongside self-employment or property, you'll see that at year-end in your final declaration. TaxNav guides you through it.
MTD IT won't be mandatory for you until April 2027 (£30k+) or April 2028 (£20k+). But you can start using or practising now to be ready.
Most MTD IT software products want you to abandon your spreadsheet and learn their system. TaxNav works differently.
Add our import worksheet to your existing file. Your income and expense summaries flow straight into TaxNav — ready to submit to HMRC with compliant digital links.
No migration. No retraining. No starting from scratch.
HMRC will write to you before your mandation date. But don't wait — the sooner you start practising, the smoother your transition will be.
Once you're in MTD IT, you'll submit updates by:
Final declaration due by 31 January following the tax year.
Support options:
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