What Happens If You Miss the Self Assessment Deadline

Missed the Self Assessment deadline? HMRC penalties can apply even if you owe no tax. This guide explains what happens next, how fines and interest build up, when you can appeal, and the practical steps to limit the damage.

Important February 2026 Accounting Dates and Deadlines

February 2026 brings important accounting deadlines for UK businesses, covering VAT, PAYE, CIS, National Insurance and Corporation Tax. This guide breaks down what’s due, when, and who it applies to - helping you stay organised and avoid late filing penalties.

12 Accounting Mistakes New Businesses Make

Starting a business is hard enough without accounting mistakes quietly draining cash flow or creating tax problems. This guide covers the 12 most common accounting mistakes new UK businesses make and shows you how to avoid them before they become expensive.

Self Assessment Guide for Landlords UK

If you earn income from rental property, HMRC usually expects a Self Assessment tax return. This practical UK landlord guide explains what to declare, what you can claim, key deadlines, common mistakes to avoid, and how upcoming tax changes may affect you.

Guide to Self Assessment for Side Hustles in the UK

Running a side hustle in the UK? This practical guide explains when you need to file a Self Assessment tax return, how the £1,000 trading allowance works, what expenses you can claim, key deadlines, and the mistakes that catch people out. Clear, up to date, and written for real side hustlers juggling tax with a full-time job.

10 Benefits of Hiring A Small Business Accountant

This is where hiring a professional small business accountant shifts from being an expense to becoming a genuine competitive advantage. A skilled accountant does far more than prepare accounts or file tax returns.

Common Self Assessment Mistakes to Avoid

Self Assessment mistakes are rarely about complicated tax rules. They’re usually caused by missed deadlines, forgotten income, incorrect expenses, or last-minute rushing. This practical guide breaks down the most common Self Assessment errors UK taxpayers make, explains what they cost, and shows you exactly how to avoid them.

What is Double Entry Bookkeeping

Double entry bookkeeping is the foundation of proper business accounting. This guide explains how debits and credits work, why double entry matters in the UK, and how it helps you produce accurate accounts, spot errors early, and stay compliant with HMRC requirements.

Self Assessment Checklists

A practical Self Assessment checklist for UK taxpayers. From confirming whether you need to file to claiming expenses, avoiding penalties, and staying organised year-round, this guide walks you through Self Assessment step by step - without the stress.

How To Choose the Right Accountant

Choosing the right accountant can transform your business. This guide walks you through what to look for, the questions to ask, typical UK pricing, and how to avoid costly mistakes so you can confidently select the best accounting partner for your needs.
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Accounting Wise is a trading style of Accounting Wise Ltd, a limited company registered in England under company number 09365202. Our registered office is: The Carriages, Station Road, Ware, SG12 9PL UK.

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