There are several little-known benefits to adding an authorized user to your credit card account, including:
•sharing card perks and other benefits
Many credit card companies offer lucrative bonuses and rewards for adding authorized users to your account. Adding another user to your account could add a few thousand extra reward points you would not have earned without adding the user.
Depending on your credit card, benefits like car rental insurance, lost luggage reimbursement, and extended warranties could apply to all purchases made, including those by any authorized users, on your credit card account.