Guaranteed approval credit cards with $1,000 limits for bad credit are typically secured credit cards. Secured credit cards require a security deposit, which is used as collateral in case the cardholder fails to make payments. Because the security deposit reduces the risk to the lender, secured credit cards are often easier to obtain than unsecured credit cards for people with bad credit. However, secured credit cards often come with higher interest rates and fees than unsecured credit cards, so it's important to read the terms and conditions carefully before applying. Using a secured credit card responsibly by making payments on time and keeping balances low can help improve your credit score over time.