This Is Money hese are the crucial dates for people paying their tax under the self-assessment system. Miss this and you will be hit with a 100 penalty. You must also pay the first installment of what you owe on this date or face being charged interest.
Tax returns start to be sent out again.
31 May 2001 Deadline for your employer to have given you form P60, which tells you your salary and deductions for the last tax year. You will need this for your return. You need a copy of this to help you will in your return too. After this date, you will have to work out the bill yourself or pay an accountant to do it for you. If you think you will have to pay less than 1,000 and you want this collected through the PAYE system your return must be with the taxman by then.