A personal credit card is a card issued in your name alone that you use to borrow money for purchases, with the understanding that you will pay back what you borrowed plus interest

When you use a personal credit card, you are borrowing from the card issuer — usually a bank or credit union. You make a purchase, the issuer pays the merchant, and you receive a bill. You can pay the full bill, pay part of it, or pay nothing that month. Whatever you don't pay becomes a balance, and the issuer charges you interest on that balance. The interest rate, called your Annual Percentage Rate (APR), varies based on the card, your credit history, and current market rates.

A personal credit card differs from a joint card (which you share with someone else) or a business card (which is tied to a business account). It also differs from a debit card, which draws from money you already have in a bank account. With a credit card, you are using the issuer's money temporarily, and the relationship between you and the issuer is recorded in your credit report.

Key Takeaways

  • A personal credit card lets you borrow money for purchases and pay it back over time, with interest charged on any balance you carry.
  • Your card issuer reports your payment history to credit bureaus, which affects your credit score and your ability to borrow in the future.
  • You have a credit limit — the maximum amount you can borrow — and going over that limit usually triggers a fee and can damage your credit.
  • Paying your full statement balance by the due date means you pay no interest, but carrying a balance means interest accrues daily until you pay it off.
  • Different cards offer different rewards, fees, and interest rates, so the card that works for one person's spending may not work for another.

How the monthly billing cycle works

Your card issuer sends you a statement each month that shows every purchase you made during the billing period, any fees, any interest charged, and your total balance. The statement also shows a minimum payment — the smallest amount you must pay by the due date to stay in good standing. The due date is usually 21 to 25 days after the statement closes.

If you pay the full statement balance by the due date, you owe no interest. This is called paying "in full." If you pay less than the full balance, the remaining amount carries over to next month as a balance, and interest starts accruing on that balance when ready. The interest compounds daily, meaning you pay interest on your interest. Over time, carrying a balance costs significantly more than the original purchase price.

If you miss the due date, the issuer reports the late payment to credit bureaus, which harms your credit score. Most issuers also charge a late fee — typically $25 to $40 for the first late payment, and higher for repeat lates. Missing a payment by 30 days or more can trigger a higher APR on your card, sometimes called a penalty rate.

Credit limits and how they affect you

When you open a personal credit card, the issuer sets a credit limit — the maximum amount you can charge to that card. A first card might have a limit of $500 to $2,000, depending on your credit history and income. As you use the card responsibly and pay on time, issuers often raise your limit without you asking.

Your credit limit matters in two ways. First, if you charge more than your limit, the transaction may be declined, or the issuer may allow it but charge an over-limit fee (usually $25 to $35). Second, your credit limit affects your credit utilization ratio — the percentage of your available credit that you are currently using. If your limit is $1,000 and your balance is $300, your utilization is 30 percent. Credit bureaus use this ratio to calculate your credit score. Keeping your utilization below 30 percent is generally better for your score than using 70 or 80 percent of your limit, even if you pay in full each month.

Interest rates and how they are set

The interest rate on a personal credit card is expressed as an Annual Percentage Rate, or APR. This is the yearly cost of borrowing, shown as a percentage. A card with a 20 percent APR costs you 20 percent of your balance per year if you carry that balance for the full year. In practice, interest is calculated and added to your balance monthly, so the actual cost depends on how long you carry the balance.

Your APR is determined by several factors: your credit score, your payment history, the card issuer's current rates, and market conditions. Someone with a credit score of 750 might receive a card with a 15 percent APR, while someone with a score of 650 might receive a 24 percent APR for the same card product. Some cards offer an introductory APR — a lower rate for a set period, often 6 to 21 months — after which the regular APR takes effect. Read the card's terms carefully to know when the intro rate ends and what your regular rate will be.

Rewards, fees, and other card features

Many personal credit cards offer rewards for spending — typically cash back, points, or miles. A card might offer 1 percent cash back on all purchases, or 3 percent on groceries and gas and 1 percent on everything else. Rewards are only valuable if you pay your full balance each month; if you carry a balance and pay 18 percent interest, a 1 percent cash back reward does not offset the cost.

Personal credit cards also charge various fees. An annual fee is a yearly charge just for having the card, ranging from $0 to several hundred dollars. Cards with higher annual fees usually offer better rewards or perks. A foreign transaction fee applies if you use the card outside the United States, typically 2 to 3 percent of the purchase. Other fees include late fees, over-limit fees, and balance transfer fees (charged when you move a balance from one card to another). Some cards charge no annual fee and no foreign transaction fee, while others charge both.

How personal credit cards affect your credit score

Every time you use your personal credit card and make a payment, that activity is reported to the three major credit bureaus: Equifax, Experian, and TransUnion. Your payment history — whether you pay on time or late — makes up about 35 percent of your credit score. Your credit utilization ratio makes up about 30 percent. The length of your credit history, the mix of different types of credit you use, and recent inquiries make up the rest.

Opening a personal credit card can help your credit score over time if you use it responsibly. Making on-time payments builds a positive payment history. Using a small portion of your credit limit and paying it off keeps your utilization low. However, a single late payment can drop your score by 50 to 100 points or more, and that damage can last for seven years. Maxing out your card or carrying very high balances can also hurt your score, even if you make all payments on time.

Personal cards versus other types of credit

A personal credit card is one form of revolving credit — credit you can use, pay back, and use again. Other revolving credit includes home equity lines of credit and personal lines of credit. Installment credit — like car loans, mortgages, and personal loans — requires you to make fixed payments over a set period until the debt is paid off.

Credit bureaus look at your mix of revolving and installment credit when calculating your score. Having both types, and managing both responsibly, is better for your score than having only one type. A personal credit card is often the easiest form of credit to obtain if you are building credit from scratch or rebuilding after past problems, which is why many people use a card as their first step toward establishing a credit history.

Frequently Asked Questions

What happens if I only make the minimum payment?

You avoid a late fee and credit damage, but you pay interest on the remaining balance. If your balance is $2,000 and your APR is 20 percent, paying only the minimum (usually 1 to 3 percent of your balance) means it will take years to pay off and you will pay hundreds or thousands in interest. Paying more than the minimum reduces the time and total interest cost.

Can I use a personal credit card for business expenses?

Technically yes, but it is not recommended. Personal cards do not offer the same protections or record-keeping features as business cards. If you use a personal card for business, those expenses are still your personal debt, and the issuer could close the card if they discover business use. A business credit card keeps personal and business finances separate.

What is a balance transfer and should I do one?

A balance transfer moves debt from one card to another, usually to a card offering a lower introductory APR. This can save money on interest if you pay off the balance before the intro rate ends. However, balance transfers charge a fee (typically 3 to 5 percent of the amount transferred), and if you do not pay off the balance in time, the regular APR kicks in and you owe more than you started with.

How do I know if I should close a credit card I no longer use?

Closing a card can hurt your credit score because it lowers your total available credit and raises your utilization ratio on remaining cards. It also shortens your average credit history if the closed card was old. Unless the card has a high annual fee, it is usually better to keep it open and unused than to close it.

What is the difference between a secured and unsecured personal credit card?

A secured card requires you to put down a cash deposit (usually $200 to $2,500) that serves as collateral. You receive a credit limit equal to or slightly higher than your deposit. Secured cards are designed for people with no credit history or poor credit. An unsecured card requires no deposit and is available to people with established credit. As you build credit with a secured card, you can eventually move to an unsecured card.