What Happens If You Miss the MTD for Income Tax Deadline
MTD penalty points do not start until 2027/28 — nothing for a missed quarterly update in 2026/27. How the four-point £200 threshold and late charges work.
Tax & HMRC
Fifty-odd guides sit under this heading. They answer four questions, in this order.
Do I have to file at all? Whether you need to send a return and what the £1,000 trading allowance actually covers settle it for most people. Side income from a platform has its own wrinkle: Vinted, eBay and Etsy now report sellers to HMRC, and the line between a hobby and a business is not about how you describe it.
How do I file it? Filing your first Self Assessment, step by step is the sequence, including the 5 October registration deadline that catches people four months before they think about tax. Your UTR arrives by post around fifteen days after you register, so the order matters. Which return you are filing and when it is due, and if you miss it, what the penalties actually come to.
What do I owe, and what can I take off? Income tax bands for 2026/27, National Insurance, and how much to set aside as you go. On the other side: allowable expenses, the ones that are not allowable, simplified flat rates and capital allowances. If the bill is over £1,000, payments on account add half again — and you can reduce them when the year is going to be worse.
What is changing? Making Tax Digital for Income Tax is the big one, with quarterly deadlines and a points-based penalty system that works nothing like the old one. And if you cannot pay, Time to Pay exists and works better before the deadline than after.
Every figure on these pages links to its HMRC source and carries the date it was checked. General information, not tax advice.
Tax Year Dates 2026/27: Every Deadline UK Freelancers Need
Every tax deadline a UK sole trader actually meets in 2026/27 — filing, payments on account, MTD quarterly updates, National Insurance and the rolling VAT date.
MTD Bridging Software: Do You Need Full Software?
MTD bridging software lets spreadsheet users stay compliant. What the digital link rule actually bans, and how to pick a tool from HMRC’s own list.
Self-Employed State Pension Forecast: Fix the Gaps
Most self-employed people never check their State Pension forecast. How the 35-year rule works, why freelancers have more gaps, and when filling them pays.
HMRC Platform Reporting: Vinted, eBay and Etsy Rules
How HMRC sees your Vinted sales: what Vinted, eBay and Etsy actually report, the £1,700 threshold, and whether you owe any tax on it.
Crypto Tax UK: What a Sole Trader Actually Owes
Crypto tax UK, for sole traders: Capital Gains Tax vs trading income, mining and staking, getting paid in crypto, and the 2026 HMRC reporting change.
Reducing Your Payments on Account: When and How to Apply
HMRC lets you reduce payments on account if you expect a lower bill — get the estimate wrong and interest runs on the shortfall. How SA303 works.
Foreign Income Tax for UK Freelancers: How It Works
UK tax residents generally owe tax on foreign income when they earn it, wherever the money sits. How residency, reporting and double taxation relief work.
High Income Child Benefit Charge When Self-Employed
Self-employed income is hard to predict, which makes the Child Benefit charge easy to misjudge. How adjusted net income works — and how a pension changes it.
Taxfix (TaxScouts) Review 2026: Is £99 Worth It?
TaxScouts is now Taxfix. What a UK accountant actually does at the £99–£349 tiers, and when the price is worth paying against filing yourself.
MTD for Income Tax: Quarterly Deadlines 2026/27
The first £50,000-plus cohort’s opening quarterly update was due 7 August 2026. Here are the MTD for Income Tax deadlines and what missing one costs.
Working From Home Tax Relief for Sole Traders
Most sole traders working 25–50 hours a month from a spare room can claim £10 a month, and many never do. Both routes to the relief, compared.