13/08/2026
The key thing to know: payments on account are normally due on 31 January and 31 July, and each one is usually half of your previous year’s tax bill.
So if your last tax bill was £4,000, HMRC may ask for £2,000 in January and £2,000 in July towards the next year.
It can feel frustrating, especially when you weren’t expecting it, but once you understand how it works, it becomes something you can plan for rather than panic over.
Hi, we’re Ordinem Finance, and we help business owners, directors and sole traders understand what they owe, when it’s due, and whether it can be reduced safely.
If you’d like to understand more about why you owe tax in July, we’ve written a full blog breaking this down in plain English: https://bit.ly/45fMTSf
If July caught you out this year, get in touch, we’ll help you plan ahead so the next payment doesn’t come as a nasty surprise.