How does becoming an authorized user on a spouse's card help me build credit faster as a newcomer?

When your spouse or a trusted relative adds you as an authorized user on a card they've had for a while and paid on time, that card's history, age, and low utilization can appear on your report and jump-start your file, sometimes within one to two months. You get a card but the primary holder stays legally responsible for the balance. Confirm the issuer reports authorized users to all three bureaus, and make sure the account has a long clean history and low balances, since any late payment or high utilization also lands on you. Pair this with your own secured card so you're building an independent history too. The CFPB describes this tactic at consumerfinance.gov.