Thistle
Growing your workspace...
Growing your workspace...
Everything you need to know about HMRC deadlines, allowances, and thresholds—written for humans, not accountants.
The 2026/27 tax year officially starts. Thistle automatically handles the transition, resetting your mileage thresholds and tax-free allowances in your dashboard.
Last date for the second payment on account for the 2026/27 tax year. Missing this triggers interest charges from HMRC.
Final deadline to register for Self-Assessment if you started your business or became self-employed in the previous tax year.
The final day to file via paper. We recommend filing digitally—it's faster, more secure, and gives you 3 extra months.
The absolute cut-off for digital Self-Assessment filing and balancing payments. Missing this triggers an automatic £100 fine.
The amount you can earn before paying any Income Tax. Currently frozen until 2028.
Tax-free limit for micro-side hustles or small business income.
Interest earned on business savings for Basic Rate taxpayers.
Tax-free dividends for limited company directors.
Thistle monitors your income and prompts you when these deadlines are approaching. No more late fees, no more "January Stress."
We stay updated with HMRC guidelines so you don't have to. Our "Tax Expert" AI is trained on latest UK tax laws to answer your specific questions.
HMRC assumes your next year will be similar to your last. They ask you to pay your next bill in two installments: January 31st and July 31st. Thistle helps you calculate if you've overpaid so you can reduce these payments.
Not necessarily. For most solo professionals, filing a Self-Assessment is a straightforward process if your records are organized. Thistle organizes your data specifically to match the HMRC filing categories.
You'll receive an immediate £100 penalty. After 3 months, daily penalties of £10/day apply. Our goal is to ensure no Thistle user ever pays a penalty.