Zero2CFO

Home / UK / Key dates

UK · Key dates

UK tax deadlines for small businesses

The fixed filing and payment dates that apply to most UK owners, each linked to the map that explains it. Past dates drop off by themselves.

  1. Self Assessment: file and pay

    31 January 2027. File online and pay what you owe by 11:59pm. 31 January 2027 is a Sunday: unless you pay by Faster Payments or card, your payment must reach HMRC by Friday 29 January.

    Read the map: When is the Self Assessment deadline?

  2. First payment on account

    31 January 2027. Half of last year’s tax, paid with your 31 January bill, if payments on account apply to you.

    Read the map: What are payments on account and how much will I pay?

  3. Second payment on account

    31 July 2027. The second half of last year’s tax. 31 July 2027 is a Saturday: unless you pay by Faster Payments or card, your payment must reach HMRC by Friday 30 July.

    Read the map: What are payments on account and how much will I pay?

Dates that depend on your own company, such as your accounts and VAT return deadlines, are explained in their maps. This list is general information, not personal advice.

Run a website? Add these dates to it