The 31 October Income Tax Deadline: A Business Owner's Checklist
Nine days from now, self-assessed income tax returns are due. Here is what to gather, what it costs to be late, and why filing early is the cheapest advice we give all year.
If you are self-employed, a company director with non-PAYE income, or a landlord, 31 October is your date with Revenue. It is the deadline to file your income tax return for last year and to pay any balance of tax due — and preliminary tax for the current year alongside it.
Filing online through ROS? Revenue traditionally grants an extension to mid-November for those who both file and pay online. It is a welcome cushion — but treat it as exactly that, not a new deadline. Systems strain, banks delay, and the extension applies only if both the return and the payment go through.
File within two months of the deadline and Revenue adds a 5% surcharge to your tax bill. Miss it by longer and that doubles to 10%. Late filing is the most expensive line item no business plans for.
What to gather this week: up-to-date books, bank statements, sales and purchase invoices, receipts for expenses, and details of any income outside the business — rental, dividends, or a PAYE salary from elsewhere.
And if the numbers are tight this year, do not go quiet. Revenue is consistently more flexible with those who engage before the deadline than with those who surface after it. A conversation now costs nothing; a surcharge later costs thousands.
