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Accountants on the loose. Accountex 2026 London was an immersion into the latest tech and industry developments. @sadleradvisory 💜

Last year alone, 1.1 million people missed the 31 January filing deadline and received completely avoidable Self Assessment penalties.

Not because they’ve done anything wrong, but simply because it was filed or paid late.

The result? £220 million paid to HMRC in fines for late Self Assessment in 2023.

That’s £220m that could have stayed in people’s businesses.

At Sadler Advisory, this is the stuff that drives us up the wall. Because with the right support, these penalties are entirely avoidable. And even if the tax owed is relatively small, the fines can stack up fast and put real pressure on otherwise healthy businesses.

If Self Assessment is on your to-do list, these are the key dates you absolutely need to know:

• 31 October – Paper tax return deadline
• 31 January – Online tax return deadline
• 31 January – Tax payment deadline
• 31 July – Second payment on account (if applicable)

Miss one, and HMRC penalties start clocking up automatically.

We’ve broken down how the penalties work and how to avoid them in our latest blog via the link in our bio

#SelfAssessment #UKTaxpayers #TaxCompliance #TaxDeadlines #AccountingTips

Today we welcome our 8th team member, Onamica. She’s joining as a trainee accountant. It comes only 4 months our 7th team member joined. 🚀🚀

Happy Diwali to our colleagues and friends in India and across the world 🌎🩵💙💛🩷 #diwali #happydiwali❤️ #accountancy

Our dedicated payroll services mean our clients get the best attention and care. In July we’ve just onboarded a client with 20 employees. Client signed it off, very happy. 😃 #payroll #payrollmanagement #accounting #charteredaccountants

Today the gang became 7. Welcome to the team, Swathi! Swathi joins our operational finance team, providing bookkeeping, payments and reporting support to our clients. 😍 #accounting #expansion #growth

Gay day out 🌈 @xero 🩵🩶 @lda_89_#accountex2025

Proud to announce I’m part of the McLaren team 🧡@airwallex #digitalaccountancyshow2025

Chartered Accountants Hall…the place to be 💥💥 #charteredaccountant #charteredaccountant #icaew

Great day in London today! We caught up with our Xero partner, Diane. It’s important to keep informed about all the new accounting tech developments. 🩵🩶 @xero

Great day in London today! We caught up with our Xero partner, Diane. It’s important to keep informed about all the new accounting tech developments. 🩵🩶 @xero

Great day in London today! We caught up with our Xero partner, Diane. It’s important to keep informed about all the new accounting tech developments. 🩵🩶 @xero

Sharing our expertise to attendees of @facexpo 2024 😍 #aesthetics #face #medicalaesthetics #medicalaestheticstraining

Sharing our expertise to attendees of @facexpo 2024 😍 #aesthetics #face #medicalaesthetics #medicalaestheticstraining

Sharing our expertise to attendees of @facexpo 2024 😍 #aesthetics #face #medicalaesthetics #medicalaestheticstraining

Specialists in accountancy, Sadler Advisory provides tailored financial guidance to help practitioners optimise their business operations and grow with confidence. Find them on the exhibition hall and you will be able to ask questions about HMRC, expenses, opening a business, VAT and much more.