2018-19 HMRC DEADLINES
| April 2018 | |
| 6 | 2018-19 tax year begins |
| 14 | Income tax due date for CT61 period to 31 March 2018 |
| 19 | Monthly deadline for postal payments of CIS, NICs and PAYE to HMRC for March 2018 |
| 19 | Final EPS submission deadline for tax year 2017-18 |
| 22 | Monthly deadline for electronic remittance of CIS, NICs and PAYE to HMRC for March 2018 |
| May 2018 | |
| 19 | Monthly deadline for postal payments of CIS, NICs and PAYE to HMRC for April 2018 |
| 22 | Monthly deadline for electronic remittance of CIS, NICs and PAYE to HMRC for April 2018 |
| 31 | Give a P60 to all employees on your payroll |
| June 2018 | |
| 19 | Monthly deadline for postal payments of CIS, NICs and PAYE to HMRC for May 2018 |
| 22 | Monthly deadline for electronic remittance of CIS, NICs and PAYE to HMRC for May 2018 |
| July 2018 | |
| 5 | Deadline for PAYE Settlement Agreement (PSA) |
| 6 | Submit P11D forms online to HMRC, give employees a copy of the information and inform HMRC the total amount of Class 1A National Insurance owed on form P11D(b) |
| 19 | Monthly deadline for postal payments of CIS, NICs and PAYE to HMRC for June 2018 |
| 22 | Monthly deadline for electronic remittance of CIS, NICs and PAYE to HMRC for June 2018 |
| 31 | Additional payment on account for Self-Assessment |
| August 2018 | |
| 19 | Monthly deadline for postal payments of CIS, NICs and PAYE to HMRC for July 2018 |
| 22 | Monthly deadline for electronic remittance of CIS, NICs and PAYE to HMRC for July 2018 |
| September 2018 | |
| 19 | Monthly deadline for postal payments of CIS, NICs and PAYE to HMRC for August 2018 |
| 22 | Monthly deadline for electronic remittance of CIS, NICs and PAYE to HMRC for August 2018 |
| October 2018 | |
| 5 | Deadline to register as self-employed for year 2017-18 |
| 19 | Monthly deadline for postal payments of CIS, NICs and PAYE to HMRC for September 2018 |
| 22 | Monthly deadline for electronic remittance of CIS, NICs and PAYE to HMRC for September 2018 |
| 31 | Deadline for postal submission of Self-Assessment tax returns for tax year ended 5 April 2018 to be received by HMRC |
| November 2018 | |
| 19 | Monthly deadline for postal payments of CIS, NICs and PAYE to HMRC for October 2018 |
| 22 | Monthly deadline for electronic remittance of CIS, NICs and PAYE to HMRC for October 2018 |
| December 2018 | |
| 19 | Monthly deadline for postal payments of CIS, NICs and PAYE to HMRC for November 2018 |
| 22 | Monthly deadline for electronic remittance of CIS, NICs and PAYE to HMRC for November 2018 |
| January 2019 | |
| 19 | Monthly deadline for postal payments of CIS, NICs and PAYE to HMRC for December 2018 |
| 22 | Monthly deadline for electronic remittance of CIS, NICs and PAYE to HMRC for December 2018 |
| 31 | Deadline for filing Self-Assessment Tax Returns for tax year 6 April 2017 – 5 April 2018 |
| 31 | Deadline for first payment on Self-Assessment account for 2018-19 |
| February 2019 | |
| 19 | Monthly deadline for postal payments of CIS, NICs and PAYE to HMRC for January 2019 |
| 22 | Monthly deadline for electronic remittance of CIS, NICs and PAYE to HMRC for January 2019 |
| March 2019 | |
| 19 | Monthly deadline for postal payments of CIS, NICs and PAYE to HMRC for February 2019 |
| 22 | Monthly deadline for electronic remittance of CIS, NICs and PAYE to HMRC for February 2019 |
| April 2019 | |
| 5 | 2018-19 Tax Year Ends |
| 19 | 2018-19 FINAL EPS submission |
| 19 | Monthly deadline for postal payments of CIS, NICs and PAYE to HMRC for March 2019 |
| 22 | Monthly deadline for electronic remittance of CIS, NICs and PAYE to HMRC for March 2019 |
HMRC Payroll
HMRC Self-Assessment
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