Many changes will be done to the way interest rates and finance charges work in regards to credit cards. Credit card issuers will no longer be able to charge two billing cycle finance charges, which previously allowed them to charge cardholders interest on balances they had already paid off. Companies will no longer be allowed to increase the interest rate on balances that are already in existence. Previously, credit card companies were within their rights to raise interest rates however the wanted but the bill limits them, meaning that interest rate increases will only apply to new balances and purchases. Existing balances will remain at the old interest rate. In addition, no interest rate increases will be legal during the first year of a new account, unless the increase was disclosed at the opening of the account. Also, the current 15-day advance notice that's required for increases to the interest rate will be raised to 45 days. Even increases due to failure to pay the minimum payment will be subject to the new 45 day notice. A very important new change also means that your credit card issuer can't leave your rate at the default interest rate if you've shown improvement in your credit use. Rates that have been increased must be reviewed often and periodically and must be lowered if any changes are evident. This is one of the most important new changes for credit cardholders, allowing thousands of Americans that had a period of irresponsibility or financial trouble recover from their situation.