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How Do I Find My Corporation Tax Reference Number

Updated: 20 hours ago

What is Corporation Tax Reference Number in the UK?

The Corporation Tax reference number is a unique identifier assigned to companies and organizations in the UK that are registered for Corporation Tax. This number is used by HM Revenue & Customs (HMRC) to identify and track the tax affairs of the company or organization.


The Corporation Tax reference number is a 10-digit number that is made up of a combination of letters and numbers. The first two characters are usually the letters "UT", which stands for "Unique Taxpayer". The next six characters are unique reference numbers for the company or organization, allocated by HMRC. The final two characters represent the tax office that deals with the company or organization's Corporation Tax affairs.


It is important for companies and organizations to have their Corporation Tax reference number available when communicating with HMRC about their tax affairs, as this number is used to identify the business and ensure that the correct tax records are being accessed.


How To Find Your Corporation Tax Reference Number

Finding your corporation tax reference number in the United Kingdom (UK) is a relatively straightforward process. The corporation tax reference number, also known as the Unique Taxpayer Reference (UTR), is a 10-digit number that is assigned to your company by HM Revenue and Customs (HMRC) and is used to identify your company for tax purposes.


How Do I Find My Corporation Tax Reference Number


The first step in finding your corporation tax reference number is to check your company's incorporation documents. When your company was first incorporated, HMRC would have assigned a corporation tax reference number, and this number should be included in the incorporation documents. If you cannot find the number in the incorporation documents, you can contact Companies House and ask them for the UTR.


If you are a new company and haven't yet received a UTR, you can obtain one by registering your company for corporation tax with HMRC. This can be done by completing a CT41G form, which is available on the HMRC website. Once the form is completed, it should be sent to HMRC, which will then assign a corporation tax reference number to your company.


Another way to find your corporation tax reference number is by accessing your company's online account with HMRC. If your company has an online account with HMRC, you can log in to the account and find the UTR under the "Your Account" or "Company Details" section.


If you have lost or forgotten your corporation tax reference number, you can contact HMRC's Corporation Tax helpline at 0300 200 3410. The helpline is open Monday to Friday, 8 am to 8 pm, and Saturday, 8 am to 4 pm. You will need to provide some personal and company details such as the company's name, registered address, and the date of incorporation to verify the company.


It's also worth noting that if your company is part of a group, it will have a different corporation tax reference number from the parent company. It is important to ensure that you have the correct reference number for the specific company you are enquiring about.


30 Innovative Ways of Finding A Corporation Tax Reference Number in the UK


 30 Innovative Ways of Finding A Corporation Tax Reference Number in the UK


  1. Review Previous Tax Payments: Sometimes, the Corporation Tax Reference Number can be found on records of previous tax payments if the company has made them in the past.

  2. Consulting Financial Statements: Some businesses include their Corporation Tax Reference Number in their financial statements or other official documents.

  3. Through a Company Accountant or Financial Advisor: If the business has an accountant or a financial advisor, they often have records of the Corporation Tax Reference Number.

  4. Checking with a Company Secretary: If a company has a secretary, they might have access to this information, especially if they handle the company's correspondence with HMRC.

  5. HMRC Correspondence for Other Taxes: Sometimes, HMRC correspondence for other taxes like VAT or PAYE might include the Corporation Tax Reference Number.

  6. Online Business Tax Account: If the company has other online tax accounts with HMRC, the Corporation Tax Reference Number might be accessible through these platforms.

  7. Tax Software: Businesses that use tax software for filing returns may find their Corporation Tax Reference Number stored in their profile or account settings within the software.

  8. Bank Statements: If the company has made payments to HMRC, bank statements might include the Corporation Tax Reference Number as part of the transaction details.

  9. Legal Documents: Legal documents pertaining to the company formation or financial agreements might include the Corporation Tax Reference Number.

  10. Company's Annual Tax Summary: The Corporation Tax Reference Number might be included in the annual tax summary provided by HMRC.

  11. Old corporation tax returns filed with HMRC: You may find your Corporation Tax Reference Number on previous years' tax returns, which can be retrieved from HMRC's online portal or by contacting their helpline.

  12. Company credit reports from credit reference agencies: Credit reports often include tax information, including the Corporation Tax Reference Number, which can be obtained from agencies like Experian or Dun & Bradstreet.

  13. Business bank account opening documents: When opening a business bank account, you may have provided your Corporation Tax Reference Number as part of the application process, which can be found in the account opening documents.

  14. Company registration documents filed with Companies House: Companies House may have a record of your Corporation Tax Reference Number, which can be found in the company registration documents or annual returns.

  15. VAT registration certificates: If your company is VAT-registered, your Corporation Tax Reference Number may be listed on the VAT registration certificate.

  16. PAYE scheme registration letters: When registering for PAYE, you may have received a letter from HMRC containing your Corporation Tax Reference Number.

  17. National Insurance contributions records: Your Corporation Tax Reference Number may be listed on National Insurance contributions records, which can be obtained from HMRC.

  18. Company pension scheme documents: If your company has a pension scheme, the scheme documents may include your Corporation Tax Reference Number.

  19. Insurance policy documents (e.g. employer's liability insurance): Insurance policy documents may require your Corporation Tax Reference Number as part of the policy application process.

  20. Business loan or overdraft agreements: Loan or overdraft agreements may require your Corporation Tax Reference Number as part of the application process.

  21. Company credit card statements: Your Corporation Tax Reference Number may be listed on company credit card statements, especially if the card is used for business purposes.

  22. Old invoices or receipts from suppliers: Suppliers may have included your Corporation Tax Reference Number on invoices or receipts, especially if they are VAT-registered.

  23. Company vehicle registration documents: If your company has registered vehicles, the registration documents may include your Corporation Tax Reference Number.

  24. Property rental agreements: If your company rents property, the rental agreement may require your Corporation Tax Reference Number.

  25. Company mobile phone contracts: Mobile phone contracts may require your Corporation Tax Reference Number, especially if the contract is in the company name.

  26. Utility bills (e.g. electricity, gas, water): Utility bills may include your Corporation Tax Reference Number, especially if the account is in the company name.

  27. Company internet or phone services contracts: Internet or phone services contracts may require your Corporation Tax Reference Number as part of the application process.

  28. Business insurance policy schedules: Insurance policy schedules may include your Corporation Tax Reference Number, especially if the policy is in the company name.

  29. Company membership documents (e.g. trade associations): Membership documents for trade associations or other organizations may include your Corporation Tax Reference Number.

  30. Archive copies of company websites or marketing materials: Old company websites or marketing materials may have included your Corporation Tax Reference Number, especially if they were used for tax purposes.


Please note that not all of these sources will always contain the Corporation Tax Reference Number, and it's always best to check with HMRC or a tax professional if you're unable to find it.


Please also note that these methods are general suggestions and may not apply to all businesses or situations. Always ensure the secure handling and privacy of sensitive tax information.


What Is the Format of the Corporation Tax Reference Number?

The Corporation Tax reference number in the UK is a 10-digit number that is unique to each company or organization that is registered for Corporation Tax. The format of the Corporation Tax reference number is as follows:


  • The first two characters are usually the letters "UT", which stands for "Unique Taxpayer"

  • The next six characters are a unique reference number for the company or organization, allocated by HM Revenue & Customs (HMRC)

  • The final two characters represent the tax office that deals with the company or organization's Corporation Tax affairs

  • Therefore, the format of a UK Corporation Tax reference number typically looks like this: UT123456A01, where "123456" is the unique reference number for the company, and "A01" is the tax office reference. It's important to note that the exact format of the Corporation Tax reference number may vary slightly depending on the circumstances of the company or organization.


Is Corporation Tax Number the Same as the VAT Number?

No, the Corporation Tax reference number is not the same as the VAT number in the UK.


The Corporation Tax reference number is a unique identifier assigned to companies and organizations in the UK that are registered for Corporation Tax. This number is used by HM Revenue & Customs (HMRC) to identify and track the tax affairs of the company or organization.


On the other hand, the VAT number is a unique identifier assigned to businesses in the UK that are registered for Value Added Tax (VAT). This number is used by HMRC to identify and track VAT payments made by the business.


While both the Corporation Tax reference number and the VAT number are important for businesses operating in the UK, they are separate and distinct identifiers that are used for different purposes. It is common for a business to have both a Corporation Tax reference number and a VAT number, but they are not the same and should not be confused with each other.


In summary, finding your corporation tax reference number in the UK can be done by checking your company's incorporation documents, registering your company for corporation tax with HMRC, accessing your company's online account with HMRC, or by contacting HMRC's Corporation Tax helpline. It's important to have the correct corporation tax reference number as it is used to identify your company for tax purposes.


How a Tax Accountant Can Help You With Corporation Tax in the UK

Navigating the complexities of corporation tax in the UK can be challenging for any business, large or small. A tax accountant is invaluable in this regard, offering expertise and guidance to ensure compliance and optimization of tax liabilities. This article delves into the various ways a tax accountant can assist businesses with corporation tax in the UK.


Understanding Corporation Tax Obligations


  1. Clarification of Taxable Profits: Tax accountants help businesses understand what constitutes taxable profits, ensuring that only legitimate business income is subject to corporation tax.

  2. Identifying Allowable Deductions: They are experts in identifying allowable deductions, ensuring businesses don’t pay tax on more income than necessary.

  3. Understanding Tax Rates and Bands: Corporation tax rates can vary, and a tax accountant ensures that businesses are taxed at the correct rate for their size and type of business.


Compliance and Reporting

  1. Filing Tax Returns: Tax accountants handle the preparation and filing of corporation tax returns, ensuring accuracy and timeliness to avoid penalties.

  2. Dealing with HMRC: They act as a liaison between the business and HM Revenue & Customs (HMRC), handling communications and queries, which can be particularly daunting for business owners.

  3. Staying Updated with Legislation: Tax laws and regulations change frequently. A tax accountant stays abreast of these changes, ensuring that businesses remain compliant.


Tax Planning and Strategy

  1. Strategic Planning: Accountants provide advice on how to structure business transactions to minimize tax liabilities.

  2. Utilizing Reliefs and Exemptions: They help businesses take advantage of tax reliefs and exemptions, such as Research and Development (R&D) tax credits or Capital Allowances.

  3. Forecasting and Budgeting: Tax accountants assist in forecasting future tax liabilities and budgeting accordingly, aiding in financial planning and cash flow management.


Handling Complex Transactions

  1. Mergers and Acquisitions: In cases of mergers, acquisitions, or disposals, tax accountants provide essential guidance on the tax implications and optimal structures for such transactions.

  2. International Taxation: For businesses operating internationally, they navigate the complexities of cross-border taxation, Double Taxation Agreements, and transfer pricing.


Audit and Assurance

  1. Audit Preparation: Tax accountants prepare the necessary documentation for audits and assist in the audit process, ensuring that the corporation tax calculations are accurate and verifiable.

  2. Risk Management: They identify areas of tax risk and advise on how to mitigate them, protecting the business from potential challenges by tax authorities.


Advisory on Changes and Restructuring

  1. Business Changes: Whether it's expansion, downsizing, or restructuring, tax accountants provide advice on the tax implications and the best way to manage corporation tax during these changes.

  2. Capital Structure Advice: They advise on the most tax-efficient capital structures, including debt and equity considerations.


Training and Development

  1. Staff Training: Tax accountants often train the in-house finance team on handling corporation tax matters, improving the overall tax handling capability of the business.

  2. Keeping the Business Informed: They provide regular updates on new tax policies and practices that could affect the business’s tax position.


Resolving Disputes and Investigations

  1. Representation in Disputes: In case of disputes with HMRC, a tax accountant represents the business, using their expertise to resolve issues efficiently.

  2. Handling Investigations: If the business is subject to a tax investigation, the accountant provides crucial support in gathering and presenting required information.


Business Growth and Development

  1. Supporting Growth: By efficiently managing corporation tax, accountants help businesses reinvest more of their profits into growth and development initiatives.

  2. Exit Strategies: They also provide advice on tax-efficient exit strategies for business owners looking to sell or transfer their business.


A tax accountant is an essential partner for any business in managing corporation tax in the UK. Their expertise not only ensures compliance but also strategically positions the business for financial success. By leveraging their skills and knowledge, businesses can navigate the intricacies of corporation tax, minimizing liabilities, and maximizing opportunities for growth and sustainability.



40 Most Important FAQs on Finding A Corporation Tax Reference Number in the UK


  1. Can I Find My Corporation Tax Reference Number on Previous Tax Returns? A: Yes, your Corporation Tax Reference Number should be on any previous tax returns filed with HMRC.

  2. Is the Corporation Tax Reference Number Listed on Bank Statements for Tax Payments? A: Yes, bank statements for tax payments often list the Corporation Tax Reference Number.

  3. Can My Accountant Provide My Corporation Tax Reference Number? A: Yes, if you use an accountant, they should have access to your Corporation Tax Reference Number.

  4. Is the Corporation Tax Reference Number the Same as My Company Registration Number? A: No, the Corporation Tax Reference Number is different from the Company Registration Number.

  5. Can I Use the HMRC App to Find My Corporation Tax Reference Number? A: Yes, if you have access to the HMRC app and your business is linked, you can find your number there.

  6. Does the Corporation Tax Reference Number Change Each Year? A: No, your Corporation Tax Reference Number remains the same each year.

  7. Can I Find My Corporation Tax Reference Number on Business Rates Bills? A: No, business rates bills typically do not include the Corporation Tax Reference Number.

  8. Is the Corporation Tax Reference Number Listed in Any Public Records? A: No, it is not listed in public records for privacy and security reasons.

  9. Can I Email HMRC to Get My Corporation Tax Reference Number? A: It's not recommended due to security concerns. It's better to use secured methods like calling HMRC or checking your online HMRC account.

  10. Will HMRC Send Me My Corporation Tax Reference Number Annually? A: No, HMRC does not send out your Corporation Tax Reference Number annually.

  11. Is the Corporation Tax Reference Number on VAT Returns? A: No, VAT returns typically do not include the Corporation Tax Reference Number.

  12. Can I Find My Corporation Tax Reference Number in Commercial Software Used for Tax Filing? A: Yes, if you use commercial software for tax filing, your Corporation Tax Reference Number might be stored within the software.

  13. How Long Does It Take to Receive a Corporation Tax Reference Number After Company Formation? A: It usually takes a few weeks to receive your Corporation Tax Reference Number after company formation.

  14. If My Company Changes Name, Will My Corporation Tax Reference Number Change Too? A: No, the Corporation Tax Reference Number remains the same even if your company changes its name.

  15. Can I Find My Corporation Tax Reference Number in Correspondence from My Business Bank? A: No, business bank correspondence typically does not include this information.

  16. Does My Business Insurance Policy Include the Corporation Tax Reference Number? A: No, business insurance policies do not include the Corporation Tax Reference Number.

  17. If I Have Multiple Businesses, Will They All Have the Same Corporation Tax Reference Number? A: No, each business will have its own unique Corporation Tax Reference Number.

  18. Is the Corporation Tax Reference Number Required for Business Loan Applications? A: It may be required by some lenders as part of the application process.

  19. Can I Retrieve My Corporation Tax Reference Number from Past Financial Audits? A: Yes, if your business has been audited, the Corporation Tax Reference Number should be in the audit documentation.

  20. If My Business is Dormant, Do I Still Need a Corporation Tax Reference Number? A: Yes, dormant companies are still required to have a Corporation Tax Reference Number.

  21. What is the purpose of a Corporation Tax Reference Number? The Corporation Tax Reference Number is used to identify a company for corporation tax purposes and is required when dealing with HMRC.

  22. Can a company have multiple Corporation Tax Reference Numbers? No, a company can only have one Corporation Tax Reference Number, which is unique to the company.

  23. How do I find my company's Corporation Tax Reference Number? You can find your company's Corporation Tax Reference Number on the HMRC website, on your company's Corporation Tax returns, or by contacting the HMRC helpline.

  24. Can I change my company's Corporation Tax Reference Number? No, your company's Corporation Tax Reference Number cannot be changed, as it is a unique identifier assigned by HMRC.

  25. Do I need to include my Corporation Tax Reference Number on my company's invoices? No, you do not need to include your Corporation Tax Reference Number on your company's invoices, but you may need to include it on other documents submitted to HMRC.

  26. Can I use my Corporation Tax Reference Number for other tax purposes? No, your Corporation Tax Reference Number is only used for corporation tax purposes and cannot be used for other tax purposes, such as VAT or PAYE.

  27. How do I notify HMRC of a change in my company's name or address? You can notify HMRC of a change in your company's name or address by completing the appropriate form on the HMRC website or by contacting the HMRC helpline.

  28. Do I need to include my Corporation Tax Reference Number when filing my company's annual accounts? Yes, you will need to include your Corporation Tax Reference Number when filing your company's annual accounts with Companies House.

  29. Can I use my Corporation Tax Reference Number to pay my company's corporation tax bill? Yes, you can use your Corporation Tax Reference Number to pay your company's corporation tax bill online or by phone.

  30. How do I find out when my company's Corporation Tax Reference Number was issued? You can find out when your company's Corporation Tax Reference Number was issued by contacting the HMRC helpline or by checking your company's Corporation Tax returns.

  31. Can I cancel my company's Corporation Tax Reference Number? No, you cannot cancel your company's Corporation Tax Reference Number, as it is a unique identifier assigned by HMRC.

  32. Do I need to include my Corporation Tax Reference Number on my company's tax returns? Yes, you will need to include your Corporation Tax Reference Number on your company's tax returns, including the CT600 form.

  33. How do I notify HMRC of a change in my company's accounting period? You can notify HMRC of a change in your company's accounting period by completing the appropriate form on the HMRC website or by contacting the HMRC helpline.

  34. Can I use my Corporation Tax Reference Number to file my company's tax returns online? Yes, you can use your Corporation Tax Reference Number to file your company's tax returns online through the HMRC website.

  35. Do I need to include my Corporation Tax Reference Number when contacting HMRC? Yes, it is recommended that you include your Corporation Tax Reference Number when contacting HMRC to help them deal with your query more efficiently.

  36. How do I find out what my company's Corporation Tax Reference Number is if I have lost it? You can find out what your company's Corporation Tax Reference Number is by contacting the HMRC helpline or by checking your company's Corporation Tax returns.

  37. Can I use my Corporation Tax Reference Number to pay my company's VAT bill? No, you cannot use your Corporation Tax Reference Number to pay your company's VAT bill, as it is only used for corporation tax purposes.

  38. Do I need to include my Corporation Tax Reference Number on my company's PAYE returns? No, you do not need to include your Corporation Tax Reference Number on your company's PAYE returns, as it is only used for corporation tax purposes.

  39. How do I notify HMRC of a change in my company's directors or shareholders? You can notify HMRC of a change in your company's directors or shareholders by completing the appropriate form on the HMRC website or by contacting the HMRC helpline.

  40. Can I use my Corporation Tax Reference Number to file my company's Self Assessment tax returns? No, you cannot use your Corporation Tax Reference Number to file your company's Self Assessment tax returns, as it is only used for corporation tax purposes.




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