UK Business Tax Year Dates & Deadlines for 2023/24

UK Business Tax Year Dates & Deadlines:

Running a UK business is a thrilling rollercoaster, but navigating the tax landscape? That’s like navigating a labyrinth blindfolded, with deadlines lurking around every corner. Fear not, intrepid entrepreneurs! This blog is your map to conquering the 2023/24 tax year, armed with crucial dates, deadlines, and resources to turn you into a tax-savvy titan.

Part 1: Charting the Tax Terrain – Know Your Dates, Know Your Forms

Part 2: Conquering the Deadlines Maze – Deep Dive into Forms and Dates

  • Self-Assessment:
    • Registering: New businesses, register within 21 days of starting to trade.
    • Filing: Gather your income and expenses, claim deductions, and submit your return electronically by January 31st, 2024.
    • Payment: Avoid late payment penalties! Pay any tax owed by the same deadline.
  • Corporation Tax:
    • Filing Deadlines: File your return within 12 months of your accounting period ending.
    • Company Accounts: Prepare and file your company accounts with Companies House within 9 months of the period end. (
    • Tax Payments: Mark your calendar 9 months and 1 day after your accounting period ends, that’s when Corporation Tax is due.

Part 3: VAT – The Quarterly Quest (and MTD for the Extra Challenge!)

  • Registration: If your annual turnover exceeds £85,000, it’s time to register.
  • Filing: Embrace MTD-compliant software for digital record keeping and quarterly return submissions. (
  • Payments: Keep your accounts in order! Pay any VAT owed by the deadline on your return.

Part 4: Payroll Tax – The Monthly Mission (and P35 the Year-End Boss)

  • PAYE & National Insurance: Use your payroll software to deduct and pay these contributions from your employees’ salaries and pay them to HMRC monthly.
  • P35: Wrap up the year with the Employer’s Annual Return. File it by April 19th following the tax year.

Part 5: Resource Roundup – Your Tax Triumph Toolkit

  • HMRC Website: Your official guidance, forms, and support hub. Bookmark it! (
  • Accountant or Tax Advisor: Seek expert help for complex situations or a second opinion.
  • Business Software: Invest in accounting and payroll software for streamlined processes and compliance.
  • Federation of Small Businesses (FSB): Valuable resources and support for small businesses, including tax advice. (
  • Institute of Chartered Accountants in England and Wales (ICAEW): Free tax guides and resources for businesses. (
  • Chartered Institute of Taxation (CIOT): Tax information and resources for businesses of all sizes. (

Bonus Tip: Embrace technology! MTD is here to stay, so consider upgrading your software and processes for a smoother tax future.

Remember, this blog is your roadmap, not your GPS. For specific details and nuances, always consult official HMRC guidance

How Does VAT (Value Added Tax) Work?


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