Create a new full access user

Please see the following article for information on the AWS account transfer process.

https://repost.aws/knowledge-center/transfer-aws-account

To grant IAM users access to billing information, please see the following document.

https://docs.aws.amazon.com/IAM/latest/UserGuide/tutorial_billing.html

Here's a step-by-step guide on how to ensure your business partner has full access and considerations you might have for transferring root user privileges:

• Add your colleague to an admin group with AdministratorAccess policy for full AWS services and resources access.
• Enable IAM User and Role Access to Billing Information under Account Settings in the Billing and Cost Management Dashboard for billing access.
• Check for any explicit deny policies that might limit access, even with AdministratorAccess.
• Use the root account only for initial IAM user creation and lock it away securely afterward.
• Update contact details under Account Settings for operational control, but not ownership transfer.
• Secure the root account with multi-factor authentication (MFA) and consider transferring or resetting the MFA device for your business partner.
• Transferring root user credentials is not recommended; contact AWS Support for guidance on account ownership changes.