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Authentication Code vs. Login: Understanding Your Companies House Access

Learn the specific roles of your authentication code and login credentials in managing your company's compliance.

Understanding Companies House Access Methods

When managing your company's filings with Companies House, you'll encounter two primary methods for accessing your account and submitting information: a standard login and an authentication code. While both are crucial for compliance, they serve distinct purposes in the filing process. Understanding these differences ensures you can navigate the system efficiently and securely.

Your Companies House Login Credentials

A standard Companies House login typically consists of an email address and a password. This is your primary gateway to the Companies House online service. It's used to create and manage your account, view your company's information, and initiate filing processes. Think of it as the key to your overall Companies House portal.

The Role of the Companies House Authentication Code

The Companies House authentication code is a unique, 6-character alphanumeric code assigned to each registered company. Its primary function is to verify that you have the authority to file on behalf of that specific company. When you are about to submit official documents, such as annual accounts or confirmation statements, you will be prompted to enter this code. This acts as a digital signature, confirming your authorisation for that particular filing action. It is essential for security and ensures that only authorised individuals can make changes to a company's public record.

Key Differences Summarised

How They Work Together in Filing

In practice, you'll use your login credentials first to access the Companies House portal. Once logged in and navigating to the section for filing a specific document (like accounts or a confirmation statement), you will then be prompted to enter your company's unique authentication code to authorise that submission. This two-step process ensures both secure account access and verified authorisation for each filing.

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Frequently asked questions

How do I find my company's authentication code?

Your company's authentication code is typically provided by Companies House when your company is first registered. If you have lost it, you can request a new one through the Companies House online service. Taxvie can assist in guiding you through this process.

Can I use my login email and password instead of the authentication code?

No, your login credentials grant you access to your account, but the authentication code is specifically required to authorise and submit official filings on behalf of your company. They serve different, complementary functions.

Is the authentication code the same for all my companies?

No, each company registered with Companies House has its own unique authentication code. You must use the correct code for the specific company you are filing for.

What happens if I enter the wrong authentication code?

If you enter an incorrect authentication code, the filing will not be accepted by Companies House. You will typically be prompted to re-enter the code. Ensure you are using the correct, current code for your company.

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Updated 2026-05-20