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Tax calendar

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.

December 2018

Wednesday 19 PAYE, Student loan and CIS deductions are due for the month to 5th December 2018.

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 Friday 21st December 2018 unless you are able to arrange a 'Faster Payment' to clear on or by Saturday 22nd December. In year interest will be charged if payment is made late. Penalties also apply.

Sunday 30 Online filing deadline for submitting 2017/18 self assessment return if you require HMRC to collect any underpaid tax by making an adjustment to your 2019/20 tax code.

This deadline is relevant for those individuals who complete a self assessment tax return online and who are employees. Where you have an underpayment you may request that HMRC collect the tax outstanding by making an adjustment to your tax code for the year 2019/20.

If we are already dealing with this matter on your behalf you need take no action.