It is not appropriate to share your Government Gateway login details with anyone, including your accountant. Your Government Gateway account is personal, and its login information should be kept secure like any other password or sensitive information. Sharing these details could lead to unauthorized access to your tax and personal information, potentially resulting in misuse or identity theft.
Accountants typically handle tax-related services by accessing HMRC systems and information through their own secure channels or by being formally authorized to manage your account. You can authorize an accountant to act on your behalf without giving them your login credentials. This is usually done by logging into your Government Gateway account and providing them with authorization through the HMRC online services. By doing this, your accountant can access the necessary information and carry out tasks related to your tax matters without compromising your account’s security.
Always remember the importance of maintaining the security of your personal information. If you have any doubts, consult with HMRC or refer to their guidelines for working with accountants and other agents safely.