Tax calendar

The online tax calendar shows the key tax deadlines. Register to receive our email tax reminders (based on the dates in this calendar) and never miss another tax deadline.

The red text indicates an entry relevant to companies and employers, black refers to personal tax, and bold indicates an important item.

Click on an item to find out more detail of how it may affect you.

If you would like to receive email reminders before these key tax dates from our taxREMINDER system, then click here to register on our website. If you have already registered and would like to change your taxREMINDER options then click to log on.

March 2021

New Advisory Fuel Rates (AFR) for company car users apply from today. The rates can be found by visiting https://www.gov.uk/government/publications/advisory-fuel-rates

This deadline is relevant to individuals who need to complete a self assessment tax return and make direct payments to HMRC in respect of their income tax, Classes 2 and 4 NI, capital gains tax or High Income Child Benefit Charge liabilities. 

The balance of any outstanding income tax, Classes 2 and 4 National Insurance, capital gains tax and High Income Child Benefit Charge for the year ended 5th April 2020 was due for payment by 31st January 2021.  Where the payment is made late interest will be charged. On 3 March 2021 a late payment penalty of 5% will be added to the outstanding liability. 

If we have already dealt with this matter on your behalf you need take no action.

This deadline is relevant to employers who have made PAYE deductions from their employees’ salaries and to contractors who have paid subcontractors under the CIS.

Employers are required to make payment to HMRC of the income tax, national insurance and student loan deductions. Contractors are required to make payment to HMRC of the tax deductions made from subcontractors under the CIS.  

Where the payment is made electronically the deadline for receipt of cleared payment is 22nd March 2021.  In year interest will be charged if payment is made late. Penalties also apply.

The final deadline of 5th April 2021 is relevant to individuals who have not considered year end tax planning issues.  These issues include:

  • utilising your annual capital gains tax exemption
  • utilising your annual inheritance tax exemption for gifts
  • utilising your annual Individual Savings Account investment limit (ISA)
  • making additional pension contributions for 2020/21.

Please do get in touch if you would like any further advice on these or any other issues.


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