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UK Tax & Business
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Stay ahead with expert articles, HMRC updates, tax deadline alerts and practical business guides — written by our qualified UK accountants in plain English, not jargon.
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✍️ Written by Qualified Accountants
✦ Plain English
✦ Updated Regularly
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Most Recent — 25 March 2026
Latest Articles from Our Qualified Accountants
Expert guides on UK tax, accounting and business — written by our ACCA qualified team and updated for 2026. New articles added regularly.
HMRC Deadlines
Upcoming Tax Deadlines — Don't Miss These
Missing HMRC deadlines means automatic fines starting at £100. We track every deadline for every Britvex client automatically. Key upcoming UK tax dates for 2026.
5
April 2026
Tax Year End 2025/26
Use your ISA, pension, CGT exempt amount and dividend allowance before they reset for 2026/27.
📅 Year End31
May 2026
P60s to Employees
All employers must issue P60 forms to every employee by 31 May — a compliance obligation.
📋 Payroll6
July 2026
P11D Deadline
Report employee benefits in kind (company cars, private medical etc.) using P11D form.
📋 Benefits31
July 2026
2nd Payment on Account
Second Self Assessment payment on account for 2025/26. Applies if prior year bill exceeded £1,000.
💰 PaymentQtly
All Year
VAT Returns
VAT returns due 1 month and 7 days after each quarter end. MTD software required.
🔄 Ongoing9 mo
After Year End
Corporation Tax CT600
File CT600 and pay corporation tax within 9 months and 1 day of your accounting year end.
🏛️ Companies31
Jan 2027
Self Assessment 2025/26
Online Self Assessment filing AND payment deadline for the 2025/26 tax year. First payment on account also due.
📋 Self Assess.60
Days — CGT
Property CGT Report
After selling UK residential property, report and pay Capital Gains Tax within 60 days of completion.
🏘️ Property
Browse All Articles
All Guides & Articles
Every guide we've published — covering UK tax, VAT, self assessment, PAYE, corporation tax, company formation and more. Use the filters above to find what you need.
🔬TaxNEW
R&D Tax Credits — UK Guide 2026
How UK businesses claim Research & Development tax relief — qualifying activities, claim rates and the Britvex process.
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💷PayrollNEW
What is PAYE and How Does It Work? — Complete UK Guide 2026
Pay As You Earn explained — HMRC registration, RTI submissions, tax codes and employer obligations.
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🏢BusinessNEW
How to Set Up a Limited Company in the UK — Step by Step
A practical step-by-step guide to setting up your UK limited company — Companies House, HMRC and first obligations.
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⚖️BusinessNEW
Sole Trader vs Limited Company — Which is Better in the UK?
The key differences between operating as a sole trader or limited company — tax, liability, admin and which is right for you.
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🧾VATNEW
How to Register for VAT in the UK — Complete Guide 2026
When you must register for VAT, how to do it, what happens next and how to stay compliant with Making Tax Digital.
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💼TaxNEW
What Can I Claim as a Self-Employed Expense? UK 2026
Every expense self-employed individuals can claim — home office, travel, equipment, phone, professional fees and more.
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📋Self AssessmentNEW
How to File a Self Assessment Tax Return — Step by Step 2025/26
A clear step-by-step guide to filing your UK Self Assessment online — registration, expenses, deadlines and common mistakes.
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🔍TaxNEW
IR35 Rules Explained — Complete UK Guide 2025/26
Inside vs outside IR35, how HMRC determines contractor status and what to do to protect yourself.
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🏛️BusinessNEW
Limited Company Accounts UK — Deadlines & Corporation Tax Explained
Everything about filing limited company accounts — CT600, Companies House deadlines, penalties and compliance.
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🚀GuideNEW
Side Hustle Tax UK 2026 — Declaring Extra Income & Avoiding HMRC Penalties
If you earn extra income from a side hustle, HMRC expects you to declare it. Here's everything you need to know.
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🧾Tax
What Expenses Can You Claim in the UK? (2026 Complete Guide)
Every allowable expense for self-employed, sole traders, landlords and limited companies — reduce your tax bill legally.
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🔎Tax
IR35 Rules Explained (2026) — Inside vs Outside IR35 & Contractor Tax
The most important tax rule for UK contractors clearly explained — how HMRC decides your status.
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🏘️Landlords
UK Landlord Tax Guide 2026 — Rental Income, Section 24 & CGT
A complete tax guide for UK landlords — rental income, Section 24 mortgage changes and capital gains on property.
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🏢Business
How to Start a Limited Company in the UK — Complete Guide (2026)
From choosing your company name to registering with Companies House and HMRC — step by step.
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📊VAT
VAT Registration UK 2026 — When to Register, Thresholds & Schemes
The £90k threshold, flat rate scheme, cash accounting and MTD-compliant VAT submissions explained.
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🏛️Tax
Corporation Tax in the UK Explained — A Complete Guide (2026)
Rates, deadlines, reliefs and planning strategies for UK limited companies — everything you need to know.
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🤝Guide
Do I Need an Accountant in the UK? (2026 Guide)
Answered clearly with real cost vs benefit analysis — for business owners, freelancers and self-employed.
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🚀Business
How to Start a Company in the UK — Step-by-Step Guide (2026)
Every option — sole trader, limited company, LLP — with real costs and timelines for UK businesses in 2026.
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📅Self Assessment
Self Assessment Tax Deadlines in the UK — Key Dates 2025/26
All critical HMRC Self Assessment deadlines — filing dates, payment dates and what happens if you miss them.
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💷VAT
VAT for Small Businesses in the UK — A Practical Guide
Registration, returns, schemes and the most common VAT mistakes small businesses make — avoid them all.
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🏡Landlords
UK Landlord Tax Guide — Rental Income & Capital Gains Tax
Rental income tax obligations for UK landlords, Section 24 impact, allowable expenses and CGT planning guidance.
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📚Accountancy
Bookkeeping and Management Accounts in the UK
The foundation of a strong business — accurate bookkeeping and timely management accounts give you full financial visibility.
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🧾Self Assessment
Self Assessment Tax Return in the UK — A Simple Guide
Everything you need to know about filing a UK Self Assessment — deadlines, allowable expenses and HMRC penalties.
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Most Recently Published
Most Recent Articles
Our 4 most recently published articles — click to read the latest guides from our ACCA qualified team.
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⚖️
Tax · R&D LATEST
R&D Tax Credits — UK Guide 2026
How to qualify for R&D tax relief, what activities count and how much your business can claim back from HMRC.
Tax · Payroll NEW
What is PAYE and How Does It Work?
Pay As You Earn for UK employers and employees — HMRC registration, RTI, tax codes and compliance explained.
Business NEW
How to Set Up a Limited Company in the UK
A step-by-step guide to setting up your limited company — Companies House, HMRC registration and first compliance steps.
Business NEW
Sole Trader vs Limited Company — Which is Better?
Tax, liability, admin — a clear comparison to help UK business owners decide which structure suits them best.
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