In this comprehensive guide, we cover everything you need to know about limited company expenses in the UK—what you can claim, what you can’t, how to record it, and the golden rules that make it all legitimate.

In this guide, we explain what limited company tax is, how it’s calculated, what tax returns you need to submit, and tips to legally reduce your tax bill — all with updated information for the 2025/26 tax year.

This article delves into the crucial question, "When is corporation tax payable?" as we unravel the timelines, deadlines, and nuances surrounding this fiscal responsibility.