- English
- Español
Get started
Basics
Learn when companies can change your credit card terms
A company can typically change your credit card terms for future purchases, but they’re generally required to notify you 45 days in advance of any significant changes. Read more
Understand how a credit card issuer calculates your interest rate
Your interest rate is what you pay for borrowing money, and most companies calculate it daily. The sooner you pay all or part of your balance, the less interest you pay. Read more
Learn the difference between a fixed and variable APR
Credit cards have interest rates that are either fixed or adjustable based on an interest rate index. When shopping for a card, find out if the APR is fixed or variable. Read more
Best practices and leading research for helping others with money questions
Understand your situation
Know your rights
- Your interest rate on existing balances generally cannot increase unless you’re late on your payments
- A card issuer cannot take more than 90 days to resolve a billing error
- If you report a lost or stolen card before it’s used, you can’t be held responsible for unauthorized charges
- Explore your rights
Take action
Submit a complaint
Having trouble with a financial product or service? If you've already tried reaching out to the company and still have an issue, you can submit a complaint. Tell us about your issue—we'll forward it to the company and work to get you a response, generally within 15 days.