There are many administrative tasks to be performed when running a small limited company in the United Kingdom, but most of them are not as vital as dealing with HM Revenue and Customs (HMRC). The filing of the CT600 is a daunting challenge for many directors each year. Knowing the corporation tax return cost helps you budget appropriately and avoid paying more than you need for your business services and stay compliant.
In this complete guide, we will demystify the typical fees that are involved with filing a tax return and discuss the factors that affect them, as well as how you can save money with your small business tax returns.
What Is Included in a Corporation Tax Return?
Before checking the price tag, it is necessary to understand what you are actually paying for. A corporation tax return is not just a single form; it is a compilation of financial data that must be submitted to HMRC annually.
A standard filing service typically includes:
- The CT600 Form: This is the primary form that will be used to report income, deductions, and tax amounts for your company.
- Statutory Accounts: Your accountant will prepare your annual accounts (Profit & Loss and Balance Sheet) in accordance with the accounting standards that are required by the UK (FRS 102 or FRS 105).
- Tax Computations: This includes adjusting your accounting profit to show the profit as it is in the tax computation (such as adding back non-deductible expenses, such as entertaining clients, and claiming capital allowances on the equipment).
- iXBRL Tagging: Accounts must be filed in a digital format known as iXBRL, which is a specific format needed by HMRC. Professional software is usually required to “tag” your financial data correctly.
- Submission to HMRC and Companies House: You must ensure that your documents are reaching with the right authorities before the deadline.
How Much Does a Corporation Tax Return Cost in the UK?
The corporation tax return cost UK businesses face can vary wildly. The job market for accountants is extremely competitive in the UK, so there will be several different levels of activity available online and in traditional establishments, ranging from “budget” to “high end”.
The fees of most accounting companies in the UK tend to differ according to the size of the business, the quality of bookkeeping, VAT registration, and payroll needs. For a small limited company with straightforward affairs, the corporation tax return cost commonly falls within standard industry pricing ranges. At MyIVA, our normal corporation tax return filing fee is £325—with our ongoing summer offer, get it for just £199 before the offer ends. This represents a highly competitive rate compared to the UK national average for professional, chartered-standard filing.
Average Corporation Tax Return Cost for Small Limited Companies
On average, for any small limited company in the UK, the cost of processing the year-end accounts and corporation tax return lies anywhere between £300 and £800. So, if the transaction volume of your small business is low and you have maintained excellent records throughout the year, you are likely to sit at the lower end of this bracket. However, if your records are a “shoebox” of receipts, the fee will rise significantly to cover the time taken for organising your data.
Corporation Tax Return Cost by Business Size
- Micro-Entities: If the turnover is below £632,000, the company may be able to opt for “micro-entity accounts” (which are less complex). Fees usually range from £250 to £500.
- Small Limited Companies: These companies are generally in need of more complex services but are still considered “small,” with fees between £500 and £1,200.
- Medium-Sized Businesses: As the business expands, reporting requirements increase, and for many businesses, this could push the cost to exceed £1500.
One-Off Filing vs Monthly Accounting Packages
Many directors choose between paying a one-off fee at the end of the year or a monthly retainer.
- One-off Filing: Best for very small “side-hustle” companies. You pay once a year for the CT600 and accounts.
- Monthly Packages: These usually cost between £60 and £150 per month and include the year-end tax return, VAT returns, payroll, and software subscriptions (like Xero or QuickBooks). This is often more cost-effective as it spreads the cost and ensures year-round support.
Factors That Affect Corporation Tax Return Costs
Several variables can drive the accountant fees for limited company tax return up or down:
- Quality of Bookkeeping: If your accountant has to spend hours reconciling bank statements, the cost will increase. Using cloud software generally lowers your fee.
- Transaction Volume: A company with 50 invoices a year is much cheaper to file for than a company with 5,000.
- VAT Registration: If the accountant needs to reconcile VAT returns against the annual accounts, the complexity increases.
- Director’s Payroll and Dividends: Calculating the most tax-efficient split between salary and dividends is often bundled into the tax return service.
- Location: Accountants in London and the South East often charge 20-40% more than firms based in the North or online-only firms.
Can You File a Corporation Tax Return Yourself?
Technically, yes. HMRC allows directors to file their own CT600 using their online services. However, this is only recommended if you have a strong background in accounting.
The software provided by HMRC is functional but does not offer tax advice. It will not tell you if you have missed out on R&D tax credits, capital allowances, or if you are claiming expenses incorrectly. For most business owners, the time taken to learn the regulations and the risk of making an error outweighs the potential savings of a DIY filing.
Is Hiring an Accountant Worth the Cost?
When considering the small business accountant cost UK, it’s helpful to view it as an investment rather than an expense. A good accountant often saves you more in taxes than they charge in fees.
- Accuracy: They ensure you don’t trigger an HMRC investigation due to simple errors.
- Tax Planning: Accountants know exactly which expenses are allowable, potentially saving you thousands in Corporation Tax.
- Deadline Management: They ensure you don’t miss corporation tax filing dates, helping you avoid automatic penalties.
- Peace of Mind: You can focus on growing your business while a professional handles the “red tape.”
Additional Accounting Services That May Increase the Cost
While the CT600 filing cost covers the basics, you may find you need “add-on” services:
- Confirmation Statement: Every year, you must update Companies House—usually costs £30-£60.
- Personal Tax Return (SA100): Most directors will require a personal self-assessment to be completed with the company return (typically worth £150-£250).
- Registered Office Address: Privacy (£50-100 per annum) – Using an accountant’s address.
- Tax Investigation Insurance: Insurance if HMRC decides to audit your business.
How to Choose the Right Accountant for Your Limited Company
Don’t just choose the cheapest option. Look for:
- Qualifications: Make sure they come from a regulating body such as ACCA, ICAEW or AAT.
- Fixed Fees: Don’t use accountants that charge per hour, and seek those that offer a fixed fee for filing corporation tax returns.
- Technology: Do they use modern software such as Xero, or are they still in the age of paper ledgers?
- Reviews: Examine Google or Trustpilot reviews to gauge the size of the business client experience.
File Your Corporation Tax Return for Just £199 This Summer!
Don’t let filing deadlines or complex tax rules overwhelm your small business. With MyIVA, you get professional and accurate corporation tax return services at a transparent fixed fee of just £199 for a limited time.
FAQs: Frequently Asked Questions
How much does a limited company tax return cost in the UK?
For a standard small limited company tax return cost typically ranges from £300 to £800 for a one-off filing. MyIVA offers a standard rate of £325. With our ongoing summer offer, get it for just £199 before the offer ends
Can I do my own Ltd company tax return?
Yes, but it is complex. You must ensure your accounts are in the correct iXBRL format and that you understand current tax laws to avoid overpaying or facing penalties.
What is included in corporation tax return fees?
Usually, it includes the preparation of annual statutory accounts, the CT600 tax return form, tax calculations, and submission to HMRC.
What happens if a corporation tax return is filed late?
HMRC issues an immediate £100 penalty if the return is one day late. This increases to £200 if it is more than three months late, plus percentage-based penalties on the tax owed if the delay continues.
Do I need an accountant for corporation tax returns?
It is not a legal requirement, but it is highly recommended. Accountants provide tax efficiency advice and ensure compliance, which generally pays for itself.
What are the 2026 corporation tax rate changes for small UK companies?
Profits up to £50,000 qualify for the 19% small profits rate, with marginal relief tapering to 25% between £50,001 and £250,000. No major rate shifts in 2026 Budget; focus remains on accurate profit reporting via CT600.
What is the exact deadline for filing a CT600 corporation tax return?
File within 12 months after your accounting period ends (e.g., 31 March year-end = 31 March next year for filing). Payment is due 9 months +1 day post-year-end (e.g., 1 January next year for 31 March YE).
How do 2026 changes impact small limited company tax return costs?
Minimal direct impact—no MTD CT fees yet, but better digital records (e.g., Xero) cut accountant time, keeping costs £300-£800. Watch for digital asset rules if your business trades crypto.
Conclusion
Filing a Corporation Tax return doesn’t need to be an expensive affair. The average expenses in the UK may differ based on the level of complexity of your business, but it is best to choose a transparent, fixed-fee provider to ensure that your overheads are kept to a minimum. Staying organised with your bookkeeping and hiring a specialist small business accountant makes sure that your company is compliant and tax-efficient while not bankrupting your business.
Affordable Corporation Tax Return Filing with MyIVA
MyIVA offers professional corporation tax return filing services for UK small limited companies at a standard, transparent fee of £325. We specialise in helping small business owners meet their HMRC obligations with zero stress and maximum accuracy. As part of our commitment to supporting the UK small business community, we are currently running a limited-time summer offer: businesses can get their corporation tax return filed for just £199. Contact us today to secure this rate and ensure your business filing is handled by experts.
