The UK income tax year begins on April 6 and ends on April 5 the following year.
Note, that these dates apply in general but there are many exceptions for unusual situations.
| Key Date |
Event |
| 6 April |
Beginning of the Tax Year. Tax Returns (or Notice to complete a Tax Return) sent out by Inland Revenue (for individuals). |
| 14 April |
Payment due of CT61, interest begins to accrue on unpaid amounts |
| 19 April |
Interest begins to accrue on unpaid PAYE/NIC of previous tax year
IR35 - if affected, you'll need to send the Inland Revenue any tax and NICs due on the deemed payment (arising on 5 April 2001), or a payment on account of any tax and NICs due.
|
| 19 May |
Employers who fail to submit their end of year PAYE returns will have a penalty of GBP100 for each 50 employees or fewer.
IR35 - if affected, send your End of Year PAYE returns (form P35 and P14) to the Inland Revenue and include any deemed payment and tax and NICs due in it on these forms; if you have not yet finally calculated your deemed payment, then tell the Inland Revenue in a covering letter that your figures are only provisional. Refer 31 January deadline for sending corrected figures if this applies. |
| 31 May |
Employers to give forms P60 (personal tax summary for the year) to employees |
| 30 June |
Company CT61 (ACT on dividends and/or income tax on loans) return due |
| 6 July |
Forms P11D (employees benefits and expenses) to be submitted |
| 14 July |
Payment due of CT61, interest begins to accrue on unpaid amounts |
| 31 July |
Second payment on account of Income tax (if prior year tax calculations shows that you needed to pay tax in instalments for the following year). |
| 31 July |
Further 5% surcharge on balance of tax unpaid at 31 January |
| 30 September |
Company CT61 return due |
| 30 September |
Self Assessment returns must be submitted to HMIT (HM Inspector of Taxes) if he is to compute and notify liability |
| 6 October |
HMIT (HM Inspector of Taxes) to be notified of any new sources where returns have not been issued |
| 14 October |
Payment due of CT61, interest begins to accrue on unpaid amounts |
| 31 December |
Company CT61 return due |
| 14 January |
Payment due of CT61, interest begins to accrue on unpaid amounts |
| 31 January |
Balance of Income tax due plus 1st payment on account (if prior year tax calculation shows that you are required to pay tax in instalments) for subsequent year.
IR35 - If you only sent provisional figures on 19 May, then send corrected form P35 and P14 figures now, and pay any balance of tax and NICs due at the same time. If necessary, issue a corrected P60 to your employee at the same time. If you do not do this, penalties may apply. |
| 31 January |
Self assessment returns must be submitted to avoid GBP100 penalty. (reduced to amount equivalent to unpaid tax if lower) |
| 28 February |
5% penalty surcharge arises on any balance of tax not paid (if you were due to pay tax on 31 January, but failed to do so). |
| 31 March |
Company CT61 return due |
| 5 April |
End of Tax Year
IR35 - if affected, the first 'deemed payments' will likely be required to be calculated by 5 April 2001. |
