If you run a limited company in the UK, you’re legally required to file a Corporation Tax Return each year – whether you’ve made a profit or not.
This isn’t just another piece of paperwork. It’s a vital part of staying compliant with HMRC and making sure your business pays the right amount of tax.
So, what exactly is a Corporation Tax Return, and how can you make the process stress-free?
What Is a Corporation Tax Return?
Also known as the CT600, the Corporation Tax Return is a document your company submits to HMRC each year. It shows:
- 📈 How much profit your company has made (based on your Year-End Accounts)
- 💼 Any tax adjustments to those profits (such as disallowed expenses)
- 💰 The amount of Corporation Tax your company owes
Even if your company makes no profit or is dormant, you may still need to file a return.
When Is Your UK Corporation Tax Return Due?
Your Corporation Tax Return must be filed within 12 months of your company’s year-end, but the tax itself is usually due 9 months and 1 day after your financial year ends.
Getting these deadlines wrong can result in penalties, interest, and unnecessary stress.
How Is It Different from Year-End Accounts?
While your Year-End Accounts provide a snapshot of your company’s financial performance, the Corporation Tax Return digs into the detail HMRC cares about most: your taxable profit.
This includes:
- Adjusting for non-tax-deductible expenses
- Claiming any capital allowances or reliefs
- Applying any tax losses brought forward
It’s a more technical process that goes beyond standard accounts, and that’s where expert help makes a difference.
How Get Smart Accountants Can Help
At Get Smart, we take the pressure off your shoulders by managing the entire process from start to finish.
Here’s what we do:
✅ Calculate your Corporation Tax accurately
We make sure all the right adjustments are made, and nothing is missed.
✅ Apply all allowances and reliefs
So you only pay what you need to – not a penny more.
✅ File your return with HMRC
Accurately, on time, and in line with all legal requirements.
✅ Tell you exactly what to pay and when
No last-minute surprises, no guessing.
Smart Tax Planning, Without the Stress
Whether this is your first return or your fifteenth, we’re here to make it simple. Let’s take the complexity out of Corporation Tax so you can focus on growing your business.
Book a call with Get Smart Accountants today, and let’s get your tax return sorted properly.
