Personal loan vs line of credit: which is cheaper?

A personal loan is usually cheaper when you know the exact amount and will repay it within one to three years, while a line of credit is cheaper when you need money in uneven pieces and can repay each draw quickly.

The difference comes down to how interest is charged. A personal loan charges interest on the full amount from day one, at a fixed rate, for a fixed term. A line of credit charges interest only on what you draw, usually at a variable rate, and lets you repay and borrow again. If you will use the full amount right away and repay it steadily, the fixed loan’s lower rate and fixed schedule tend to win. If you might use only part of the money, or only for a short time, the line can cost less.

People researching discover personal loans often run into this choice because banks offer both products. The rest of this guide puts real numbers on each case.

A loan pays out a lump sum and is repaid in equal monthly installments, while a line of credit gives you a limit to draw against whenever you need, with a minimum payment that changes with the balance.

Both are usually unsecured, and both are offered by banks, credit unions and online lenders. Lines of credit are less common at the small end of the market, and many require good credit.

On a $3,000 cost paid off evenly over 24 months, a fixed-rate loan at 17.99% costs about $594 in interest, while a line of credit at 21% variable with the same payoff pace costs about $700, assuming the rate does not change.

The loan wins in that scenario for two reasons: personal loan rates are often a little lower than unsecured line rates for the same borrower, and the fixed rate removes the risk of increases. Now change the facts. Suppose you need $3,000 available for a home project but end up using only $1,200 for four months. The line charges interest only on the $1,200 for those months, roughly $85, while a $3,000 loan would have charged interest on the full amount from the start.

The lesson is that the cheaper product depends on how much of the money you actually use, and for how long. Our personal loan calculator shows the loan side of any comparison.

Loan APRs for fair to good credit commonly fall between about 12% and 30%, while unsecured lines of credit often price a few points higher and float with the prime rate, so the line can get more expensive over time.

Banks set line rates as a margin over a benchmark. When the benchmark rises, your rate and payment rise with it. A loan locks the rate at closing. For a balance you will carry for two years, that certainty has real value.

Fees can tilt the comparison. Some loans carry an origination fee of 1% to 10%, which is folded into the APR. Some lines charge an annual fee or a fee per draw. Comparing APRs is the cleanest test for a loan; for a line, add any annual fee to the interest you expect to pay. Our rates guide explains how lenders price each.

A loan makes more sense when the cost is a single known amount, you want a fixed payment and end date, and you would be tempted to keep borrowing from an open line.

• A repair, medical bill or move with a firm quote.
• Consolidating card balances into one payment with a deadline.
• Building credit with an installment account.
• Budgeting on a steady paycheck where a fixed payment is easiest.

The structure itself is a benefit for many people. Because a loan cannot be drawn again, the balance only goes down. That removes a temptation that trips up many line-of-credit users.

A line of credit makes more sense when the total cost is uncertain, spending happens in stages, or you want a backstop you may not use at all. Paying interest only on what you draw is the main advantage.

• A renovation with costs that arrive over several months.
• Irregular income, such as seasonal or freelance work.
• An emergency reserve you hope never to touch.
• Short-term gaps that you repay within weeks.

The catch is discipline. An open line with a $5,000 limit makes it easy to carry a balance indefinitely, and a variable rate can rise while you do. If you choose a line, set a payoff target for each draw.

Lenders review income, debt-to-income and credit history for both products, but lines of credit more often require good to excellent credit, while loans are available across a wider credit range.

For a loan, many lenders in our network consider fair credit, especially for amounts under $5,000. Lines of credit are often reserved for existing bank customers with strong scores, and some require a deposit relationship. Credit unions are the main exception, offering both to members.

If your credit is still being rebuilt, a loan is usually the more realistic option, and on-time payments on it can help you qualify for a line later.

Both start with a hard inquiry, but they affect your score differently afterward: a line of credit counts toward revolving utilization, while a loan is an installment account that does not.

A large balance on a line can raise your utilization ratio in the same way a credit card balance does. A loan balance is weighed differently in common scoring models, which is one reason consolidating cards into a loan can lift a score. On-time payments help with either.

Closing a line after paying it off reduces your total available credit, which can raise utilization on other cards. Paying off a loan simply closes an account in good standing.

Large banks often offer both products, but their personal loans tend to start at higher minimums, and their unsecured lines are usually limited to customers with strong credit. Recent published reviews list a $2,500 minimum for discover personal loans.

We are not affiliated with Discover. If you need $1,000 or $1,500 and want a fixed payment, a lender with a lower minimum is the practical choice. If you have strong credit and an existing bank relationship, it is worth asking your bank about both products. Shoppers checking discover personal loan rates should compare them with a credit union line, which often has a lower ceiling.

Some borrowers use a loan for a known cost and keep a small line or card as a backup, which can be a sensible combination if the backup is used rarely and repaid quickly.

For example, a homeowner might take a $2,500 loan for a furnace repair and keep a $1,000 line available for anything the technician finds later. The loan covers the planned cost at a fixed rate; the line handles only the surprise. The risk is that both balances grow at once, so keep the line for true emergencies.

The most common mistake is comparing only the monthly payment. A line’s minimum payment can look far smaller than a loan payment while the balance barely moves, so the true cost hides until months later.

Other mistakes come up often:

• Ignoring the rate type. A variable rate that starts lower can end higher than a fixed one.
• Borrowing the full limit by default. A $5,000 line used for a $2,000 need invites the other $3,000 to follow.
• Forgetting annual fees. A $50 yearly fee on a line used once adds up.
• Choosing a long term for a small amount. Four years on a $1,500 loan costs far more interest than one year.
• Skipping the payoff date. Without a target, a line balance can sit for years.

Avoiding these is mostly a matter of writing the numbers down. For each option, list the rate, fees, payment and the date you expect to be finished. Then add up the total you would pay. The option with the lower total and a schedule you can keep is the right one.

A loan ends when the last scheduled payment posts, and the account closes in good standing. A line of credit usually has a draw period followed by a repayment period or a renewal review, which can change your payment or your access.

At the end of a draw period, some lines convert the balance to a fixed repayment schedule, often with a higher payment than the interest-only minimum you were used to. Others come up for renewal, when the bank can lower the limit or close the line if your finances have changed. Read this part of the agreement closely before you open a line, because it is where surprises tend to appear.

A loan has no such review. Once you sign, the rate, payment and end date are set for the full term, regardless of what happens to market rates or the lender’s policies. For a borrower who values certainty, that predictability is often the deciding factor.

Ask each lender for the APR, all fees, the rate type, how the payment is calculated and what happens at the end of the term or draw period. Those five answers decide which product is cheaper for you.

1. Is the rate fixed or variable, and how often can it change?
2. What fees apply at opening, each year and for each draw?
3. What is the minimum payment, and how is it calculated?
4. Is there a prepayment penalty on the loan?
5. When does the line’s draw period end, and what happens then?

Write the answers next to each other. In most cases the cheaper choice becomes obvious. Our loans guide covers the loan side in depth, and our compare lenders page lists published ranges for 20 lenders.

Choose a loan for a known amount you will use at once and repay on a schedule; choose a line of credit for uncertain or staged costs you can repay quickly. The cheaper option is the one that matches how you will actually use the money.

Before applying for either, estimate the cost both ways with realistic numbers. If the amount is fixed and the loan’s APR is competitive, the loan usually wins on total cost and on peace of mind. If you are comparing discover personal loans or discover loans with other lenders, the same test applies: total of payments for the way you will really borrow.