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Tax Calendar


This is a summary of the various dates you should be aware of:

Companies House

Abbreviated Annual accounts to be filed at Companies House within 9 months of the year end. (Earlier dates apply to the first year).

Annual Return (AR01) is prepared at the anniversary of the company’s incorporation, it is then due 28 days after this date.


Corporation Tax Return (CT600) and annual accounts to be sent to HMRC within 12 months of the year end. (Earlier dates may apply in the first year).

Corporation Tax - payment of Corporation Tax is due 9 months after the year end. (Earlier dates may apply in the first year).

VAT Returns and payment are due approximately five weeks after the end of the each quarter.

As an example:

Quarter ending 31st March Due by 7th May

Quarter ending 30th June Due by 7th August

Quarter ending 30th September Due by 7th November

Quarter ending 31st December Due by 7th February


P35 & P14’s are due after the end of each tax year. They should reach HMRC by 19th May after the end of the tax year.

P11d & P11d(b) are due after the end of each tax year. They should reach HMRC by 6th July after the end of the tax year.

PAYE and National Insurancedeductions from salary should be paid 14 days after the end of the period. Assuming that the company is eligible for quarterly payments they will be due by:

Quarter ending 5th April Payment due by 22nd April

Quarter ending 5th July Payment due by 22nd July

Quarter ending 5th October Payment due by 22nd October

Quarter ending 5th January Payment due by 22nd January

Class 1A NIC - this relates to National Insurance on certain benefits in kind such as company cars. If this applies this payment is due by 22nd July following the end of the tax year.

Self Assessment

Tax Return

The personal Self Assessment Tax Return is normally due with HMRC by 31st January after the end of the tax year.

Taxes Due

Any taxes due must be paid by 31st January after the end of the tax year.

Payment on Account

Payments on account are made twice a year, on 31st January and 31st July.

Please refer to our factsheets for more details on the above taxes.

Why Choose Nixon Williams?

Nixon Williams provides fixed fee accountancy packages for contractors, freelancers, locums and consultants. Our friendly, low-cost service takes the stress out of accounting, taxation and any other financial issues that contractors may experience. For just £95 per month plus VAT our service includes:

  • Your own dedicated accountant including their direct telephone number and email address
  • Unlimited telephone and email support
  • Ongoing bookkeeping or access to our online accounting portal, Vantage
  • Handling general correspondence and queries with HM Revenue and Customs
  • Free company formation at Companies House
  • Assistance with opening a business bank account
  • Ongoing tax advice throughout the year
  • Completion of any personal taxation requirements
  • Calculation and advice on VAT returns and payments
  • Calculation and advice on PAYE payments
  • 98% of our accounting staff have either completed or are studying towards one of the following qualifications: ACMA, ACCA, CTA, ATT or AAT.

If you have any questions about contracting, becoming a contractor, starting a limited company or Nixon Williams, please contact our new business team on telephone number: 01253 362062 or email:


To appoint Nixon Williams as your accountants, please complete our simple client agreement form.

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