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.

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.

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.

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.

2026 Business Resolutions: Smarter Goals for a Stronger Year Ahead

From cash flow and compliance to pricing, digital systems, sustainability, and long-term planning, these practical resolutions will help UK business owners build resilience, reduce risk, and increase profitability in the year ahead.

2026 Finance Tips & Trends to Watch Out For

Discover the key finance trends shaping 2026 - from digital tax and AI automation to cash flow resilience, fintech growth and green finance. A practical, expert-led guide for UK businesses preparing for the year ahead.

The Best Accounting Software for Contractors in the UK

A clear guide to the best accounting software for UK contractors, comparing Xero, QuickBooks, FreeAgent, Zoho Books, Sage and The Balance App to help you choose the right tool for your business.

What are CIS Returns – A Guide for UK Contractors

Understanding CIS Returns is essential for staying compliant as a UK contractor. This guide breaks down how CIS works, who must file, key deadlines, common mistakes, and how subcontractors reclaim tax. Perfect for contractors who want a stress-free, penalty-free approach to CIS compliance.

How to Claim Tax Deductions and Save Money as a Sole Trader

Understanding which expenses you can claim as a sole trader is one of the simplest ways to reduce your tax bill. This guide breaks down the rules on allowable expenses, capital allowances, home office costs, and mileage so you can confidently claim every deduction you're entitled to — and avoid paying more tax than you need to.
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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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