5th April
End of tax year 2008/09

19th May
Last date for forms P14, P35 and P38A to reach the HMRC for tax year 2008/09.

31st May
Last date for forms P60 to be sent to employees.

6th July
Last date for forms P11D and P9D to be sent to the HMRC and employees for tax year 2008/09.

Last date for return of Class 1A NICs for tax year 2008/09.

19th July
Last date for payment of Class 1A NICs for tax year 2008/09.

31st July
Due date for second instalment of personal tax for tax year 2008/09

30th Sep
Last date for submission of self-assessment personal tax returns to HMRC where individuals wish for HMRC to calculate their tax and possibly code-out any underpayments.

5th Oct
Deadline for notifying HMRC of liability to personal tax where no tax return has been issued for tax year 2008/09.

2010

31st Jan
Last date for submission of 2008/09 self assessment personal tax returns to HMRC to avoid late filing penalty.

Due date for personal tax balancing payment for tax year 2008/09 and first instalment for tax year 2009/10.

5th April
End of tax year 2009/10