For companies operating in the UK, corporation tax payments are due nine months and one day after the end of the company’s accounting period.
This means if a company’s financial year ends on 31 December 2025, corporation tax must be paid by 1 October 2026. Companies should plan ahead to ensure sufficient funds are available for tax payments, avoiding late payment interest charges from HMRC.
Individuals and businesses selling second properties or investment properties should also be aware of the capital gains tax (CGT) deadline. Any capital gains tax due on a second property sale must be reported and paid within 60 days of the sale’s completion.
This requirement, introduced in recent years, is designed to ensure tax liabilities are settled promptly. Sellers should factor in CGT obligations when planning property transactions to avoid unexpected tax bills.