IE | Income tax deadline for self-employed Accountant's Notes Posted on 7 September 2022 by Accountant7 September 2022 Pay and file deadline for Self-employed’s Income tax (for the year 2021) is 31st October 2022. If you file your tax return and pay tax online (through ROS – Revenue Online System), the deadline is extended till, 16th November 2022. Read more …