The core difference: how you borrow and repay

A line of credit and a credit card are both ways to borrow money, but they work differently in practice. With a credit card, you receive a physical or digital card that you use to make purchases up to your credit limit. You get a monthly bill, and you can pay it in full or carry a balance and pay interest on what you owe. With a line of credit, you typically receive access to a pool of money—often through checks, transfers, or a connected account—that you draw from as needed. You only pay interest on the money you actually use, not on the full available amount.

The second difference is how the debt is structured. Credit cards expect you to make regular monthly payments, and the balance can stay open indefinitely as long as you keep paying. A line of credit often has a draw period—a set time (often 5 to 10 years) when you can borrow—followed by a repayment period when you stop borrowing and pay back what you owe, usually over another 5 to 10 years.

Key Takeaways

  • Credit cards charge interest only on purchases you make and balances you carry, while lines of credit charge interest only on money you actually draw out.
  • Credit cards are designed for frequent, smaller purchases and come with rewards programs; lines of credit are better for larger, less predictable expenses.
  • Lines of credit typically have lower interest rates than credit cards, but credit cards offer more fraud protection and are accepted everywhere.
  • A line of credit requires you to stop borrowing and begin repaying after the draw period ends; credit cards have no forced repayment timeline.

Interest rates and costs

Lines of credit almost always carry lower interest rates than credit cards. A typical credit card interest rate (called the APR, or annual percentage rate) ranges widely depending on your credit history, but many people see rates between 18% and 25%. A line of credit, especially a home equity line of credit (HELOC), often starts at the prime rate plus a small margin—currently somewhere between 8% and 12% for most borrowers, though this varies by lender and your credit profile.

The reason for the difference is collateral. Many lines of credit are secured by an asset—your home, for example—which means the lender can take that asset if you don't pay. Credit cards are unsecured, so the lender takes on more risk and charges more interest to cover it. If you're borrowing a large amount or expect to carry a balance for a long time, the lower rate on a line of credit can save you hundreds or thousands of dollars.

However, credit cards often come with rewards—cash back, points, or travel miles—that can offset some of the interest cost if you pay your balance in full each month. Lines of credit rarely offer rewards.

How much you can borrow

Both products let you borrow up to a limit set by the lender, but the limits work differently. A credit card limit is typically between $500 and $25,000 for most people, though some premium cards offer higher limits. The lender sets this based on your income, credit score, and existing debt. You can request a higher limit, and the lender may grant it if your financial situation improves.

A line of credit limit is often much higher—sometimes $10,000 to $100,000 or more—because it's usually secured by collateral like your home's equity. The lender calculates how much of your home's value you can borrow against (often 80% to 90% of the equity) and sets your limit there. This makes lines of credit better suited for larger expenses like home renovations, medical bills, or consolidating other debts.

Flexibility in how you use the money

A credit card is designed for transactions. You use it to buy things at stores, online, or over the phone. Merchants everywhere accept credit cards, and you get a record of each purchase. This makes credit cards convenient for everyday spending and budgeting—you can see exactly what you spent and when.

A line of credit is more flexible in form but less flexible in acceptance. You can draw money by writing a check, requesting a transfer to your bank account, or using a connected debit card. You don't have to use the full amount at once; you can draw $500 one month and $2,000 the next. However, you can't use a line of credit to make purchases directly at a store or online the way you would a credit card. This makes lines of credit better for planned expenses or ongoing costs rather than everyday shopping.

The repayment timeline

A credit card has no forced end date. You can carry a balance indefinitely, making minimum payments each month, and the account stays open. This flexibility is useful if you're not sure when you'll pay off the balance, but it also makes it straightforward to carry debt for years and pay a lot of interest. If you want to close the account, you can do so anytime after the balance is paid.

A line of credit operates in two phases. During the draw period (often 5 to 10 years), you can borrow and repay as much as you want, paying interest only on what you've borrowed. Once the draw period ends, the account enters the repayment phase, and you can no longer borrow. You then have a set number of years (often another 5 to 10) to pay back everything you owe. This structure forces you to have a plan for repayment, which can be helpful for discipline but also means you lose access to the money once the draw period closes.

Fraud protection and security

Credit cards come with strong federal fraud protection. If someone uses your card without permission, you can dispute the charge, and the card issuer will typically refund the money while they investigate. Your liability is capped at $50 under federal law, and many issuers offer zero-liability policies that protect you completely.

Lines of credit have less standardized fraud protection. If someone gains access to your line of credit account and draws money, the process for disputing it is slower and less consumer-friendly than with credit cards. This is one reason credit cards remain the safer choice for everyday transactions, especially online or in unfamiliar places.

Which one should you choose

Choose a credit card if you make frequent purchases, want rewards, need strong fraud protection, or aren't sure how much you'll need to borrow. Credit cards work everywhere, are straightforward to manage, and the lack of a repayment important date gives you flexibility. The higher interest rate matters less if you pay your balance in full each month.

Choose a line of credit if you need to borrow a large amount, expect to carry a balance for a while, or have irregular expenses you want to draw from over time. The lower interest rate will save you money on larger balances, and the structure of a draw period followed by repayment can help you stay disciplined. If you own a home, a HELOC is often the cheapest way to borrow for major expenses.

Some people use both: a credit card for everyday purchases and rewards, and a line of credit for larger, planned expenses. The key is understanding what each tool is designed for and matching it to your actual borrowing pattern.

Frequently Asked Questions

Does a line of credit hurt my credit score the same way a credit card does?

Both can affect your credit score, but differently. Opening either account triggers a hard inquiry, which temporarily lowers your score slightly. Carrying a high balance on either one can hurt your score because it raises your credit utilization ratio. However, a line of credit may have less impact on utilization because the available credit is often much higher, so the same balance represents a smaller percentage.

Can I use a line of credit to pay off a credit card?

Yes. Many people use a line of credit to pay off credit card debt because the interest rate is lower. This is called debt consolidation. You draw money from the line of credit, pay off the credit card in full, and then repay the line of credit at a lower rate. Make sure you don't run up the credit card balance again, or you'll end up with both debts.

What happens if I don't use my line of credit during the draw period?

Nothing negative happens. You won't pay interest on money you don't borrow. However, some lenders charge an annual fee to keep the line of credit open, even if you don't use it. Check your agreement. When the draw period ends, you lose the ability to borrow, so if you think you might need the money later, it's worth keeping the account open.

Can I get a line of credit without owning a home?

Yes, but it's harder. Unsecured lines of credit exist but are rare and usually only available to people with excellent credit and high income. Most accessible lines of credit are secured by home equity (HELOCs) or by a savings account (savings-secured lines). If you don't own a home, a credit card is usually your more practical option.

Which builds credit faster, a line of credit or a credit card?

Both build credit if you use them responsibly and make on-time payments. Credit cards may build credit slightly faster because credit bureaus see them as higher-risk lending, so responsible use is rewarded more visibly. Either way, the key is paying on time and keeping balances low relative to your available credit.