Client login

Thames Williams mailshot logo
Contact us

Important Dates and Deadlines

Never miss a tax Return deadline

If you’re a UK business owner, you’ll need to file your returns, meet your obligations and pay your taxes well ahead of any deadlines, or else you could face a hefty fine from HMRC. That said, we know keeping track of all the relevant dates is easier said than done. If you’re ever in doubt, you can check our handy list of dates and deadlines on this page.

So pencil these dates in your diary, set a reminder on your calendar and bookmark this page now — you’ll thank us later.

If you have any further questions or need more advice about specific deadlines, get in touch with us. We’ll help you stay on track to meet your obligations.

30 January 2025

  • Non-resident landlord scheme

    Payment of tax for the quarter ended 31 December 2024

31 January 2025

  • Plastic Packaging Tax

    Return and payment quarter-end 31 December

  • EFRBS

    Report schemes starting in 2023/24

  • IR35

    Amend or correct 2023/24 deemed payment on employer return and pay any balance of PAYE/NIC

  • National Insurance

    Form CA72A (deferral) for the self-employed

  • National Insurance

    Notify of liability to Class 2 NI where self-employment commenced in 2023/24

  • Self Assessment

    File outstanding 2020/21 returns to displace a determination

  • Self Assessment

    First 2024/25 payment on account

  • Self Assessment

    2023/24 balancing payment

  • Self Assessment

    Amendments to 2022/23 tax returns

Start your journey

We’re so excited to work with you and your business – let’s talk whenever you’re ready.

Get in touch

w

Discovery chat

Get started

Contact us
Our packages
Xero Gold partner logo
Quickbooks logo
Freeagent logo