If you are among the millions of Americans with bad credit, odds are that you have a tough time getting a credit card, if you can even get one at all.

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There are several options here. You can choose to wait it out until the bad information to fall off your credit report, which can take up to seven years. You could choose a credit card specifically designed for people with bad credit, which can end up costing more than its worth. Or, you could choose to get a secured credit card, which can benefit your credit and personal finances in several ways.

How secured cards work
A secured credit card work just like any other major credit card. You can use it at any retailer who accepts that particular type of card (Visa, MasterCard, etc.), and you can also use it to pay for goods and services that require a credit card hold, such as renting a car or staying at a hotel.

The only real difference is the "secured" part. In order to receive your new credit card, you are required to deposit money into an account with the issuing bank, generally in an amount equal to your desired credit line. So, if you deposit $500, you can get a $500 credit limit. Sure, it requires a substantial amount of cash, but unlike traditional "bad credit" cards, the money you put up remains yours, and will be returned to you when you close the account.

A secured credit card reports to the three major credit bureaus, and lenders will have no idea that it's a secured card. It will look just like any other credit card listing, with a payment history, credit limit, and balance information. 

How much of a difference can it make?
As long as you use the card responsibly, having a secured credit card can make a huge difference in your credit score, and the effects might be seen quickly. For example, 30% of your FICO score (the score lenders look at) comes from the amounts you owe on credit cards relative to your balance. Well, if you currently don't have any credit cards, this is an untapped portion of your score. As long as you keep your balance low (say, less than 20% of your limit), a secured card can really help this category.

Another 10% of your score comes from the types of credit you use. Essentially, lenders want to see a diverse mix of loans, credit cards, and other accounts. If you don't have a credit card right now, this category is not helping your score as much as it could.

And over time, other categories such as payment history (35% of your score) and length of credit history (15%) will benefit.

The bottom line here is that having a credit card in good standing is essential to establishing and maintaining better credit, and a secured credit card is a cost-effective and very beneficial way to get one.