25/05/2026
5 Things You Need to Know About the 2026/7 Tax Year Changes
No.3 - Corporation Tax: The S455 Charge & Late Filing Penalties ⚠️
The main corporation tax rates aren't changing in 2026/7 — but two updates could catch businesses off guard if they're not prepared.
1️⃣ The S455 Charge is Going Up If you have an overdrawn director's loan account, take note. The Section 455 charge — applied to loans not repaid within 9 months of the accounting period end — is rising to 35.75% for loans made on or after 6 April 2026. This is a significant increase and warrants urgent attention.
2️⃣ New Late Filing Penalties For corporation tax returns due on or after 1 April 2026: 📌 Initial penalty: £200 📌 Over 3 months late: £400 📌 Repeat offenders face escalating fines
Staying compliant has never been more important. Our outsourced finance services at TAG Accountants ensure your records are always in order and your filings are always on time — so penalties simply aren't something you need to worry about.
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