How Do Loan Terms Affect the Cost of Credit?

A loan's term, annual percentage rate (APR) and fees, rather than just its interest rate, determine how much the credit will truly cost you. Longer terms can lower your monthly payment, but they may increase total borrowing costs because interest accrues over more time. Higher APRs and added fees can also make a loan more expensive overall. Shorter terms can reduce total interest, but they often come with higher monthly payments.

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How Loan Term Length Changes What You Pay

When you open an installment loan, you'll pay back more than just the principal. When banks calculate your monthly payment, they factor in the interest they expect to earn over the loan’s repayment period, commonly referred to as its term.

With all other factors equal, a shorter loan term generally lowers your total interest but increases your monthly payment. In comparison, a longer loan term increases your total interest but reduces your monthly payment.

Here's a look at what a $10,000 loan with 8% interest would look like.

Paying off a personal loan early can reduce the total interest you pay, unless your lender charges a prepayment penalty that negates all or most of your potential savings. Even so, extra payments may reduce your principal balance faster, which can lower total borrowing costs.

How To Calculate Your Total Loan Cost

To calculate your total loan cost, first multiply your monthly payment by the number of months in the loan term. Then subtract the original loan amount to estimate total interest paid:

• Total amount paid = monthly payment multiplied by the number of months

• Total interest paid = total amount paid minus loan amount

For the three-year loan example above, multiply the unrounded monthly payment of about $313.36 by 36 to get $11,280.96. Subtract the $10,000 principal to get $1,280.96 in estimated interest, or about $1,281. Add any origination and other fees to estimate the total loan cost.

Why Early Payments Are Mostly Interest

Early payments on installment loans go mostly toward interest because interest is based on your remaining balance, which is highest at the start of the loan. That's how interest works on a personal loan: As your balance decreases, less interest accrues and more of each payment goes toward principal. 

That’s why extra principal payments made early can cut more total interest than extra payments made later, especially on a longer-term loan. Make sure your lender applies extra payments to principal, and check for prepayment penalties.

APR vs. Interest Rate: What Drives Your Cost?

To understand the cost of credit, it’s important to understand these key phrases:

• Interest rate: The annual cost of borrowing the loan's principal, expressed as a percentage — it doesn't include any lender fees.

• Origination fee: A common, one-time charge for underwriting and processing your loan, typically 1% to 10% of its amount, deducted from your funds before you receive them.

• APR: A broader measure of your yearly cost of borrowing, also expressed as a percentage — it includes the interest rate and certain fees, like the origination charge.

The interest rate and the origination fee, along with other ancillary charges, drive the cost of your loan, while the APR gives you the most complete picture of how much you’ll pay.

So, say you take out a $10,000 loan at a 10% interest rate with a 2% origination fee. The lender deducts that $200 fee from your loan proceeds, meaning you receive $9,800. However, you’re still expected to pay interest on the full $10,000.

As a result, the loan's APR — which factors in the interest rate and the origination fee — is higher than 10%. For example, if the loan has a three-year repayment term, its APR would be around 11.5%.

Does Your Loan Term Affect Your Interest Rate?

Yes, longer loan terms can come with higher interest rates, while shorter loan terms may qualify for lower rates. 

Longer terms can cost more for two reasons:

• You're paying interest for more months, which raises the total cost.

• Lenders may charge a higher rate because they face more default risk over a longer repayment window.

With a shorter term, you may qualify for a lower rate and give interest less time to build. The monthly payment will usually be higher, so compare APRs across different term lengths instead of choosing based only on the payment.

How Fees and Rate Type Add to the Bill

Origination fees aren't insignificant. For instance, most personal loan providers charge between 1% and 10% of the loan's amount, though a few, including LightStream, charge none at all.

These fees are a one-time charge, meaning they don't increase or decrease based on your loan term. In other words, if the lender charges a 2% origination fee on a $10,000 loan, you'll pay $200 whether you choose a three-year or a five-year repayment period.

However, assuming both loans have the same interest rate, the five-year loan will generally cost more overall because you'll pay interest for two more years.

Higher interest rates, of course, will cost more over any loan term than lower ones — but rate type can also influence the cost of that credit.

• Fixed interest rates: These stay the same for your full loan term. Most installment loans, and personal loans in particular, come with fixed interest rates.

• Variable interest rates: Variable interest rates can increase or decrease alongside benchmark indexes, like the prime rate. Variable interest rates are more common among revolving loans, like personal lines of credit or credit cards.

Short-term loans with low introductory variable rates have less time for interest rates to rise, whereas longer-term variable-rate loans carry more uncertainty. If benchmark interest rates increase while you're still repaying that loan, both your monthly payments and your total borrowing costs may increase.

Keep in mind, too, that many loans may come with other charges, such as late payment fees, insufficient funds (NSF) fees and returned payment fees. These charges typically aren't reflected in the loan's APR. Still, they can increase your borrowing costs if a shorter term leaves you with unaffordable monthly payments or a longer repayment period increases the chances of experiencing a financial setback — another reason it's important to choose your loan term carefully.

Secured vs. Unsecured Loans: How Collateral Affects Cost

Collateral can affect the cost of credit because it gives the lender something to claim if you stop making payments. A secured loan is backed by an asset, while an unsecured loan is based more heavily on your credit profile, income and existing debts.

• Secured loans: Mortgages and some auto loans are common examples because the home or vehicle may serve as collateral. Since the lender has a way to recover some money if you default, secured loans often have lower interest rates. The trade-off is that the lender may repossess the vehicle, foreclose on the home or claim the pledged asset.

• Unsecured loans: Personal loans are often unsecured, which means you do not pledge a specific asset. The interest may cost more on these loans because the lender takes on more risk, but there is no pledged collateral to repossess.

Choosing the Right Loan Term for Your Budget

To choose the right loan term for your budget, start by asking yourself two gut-check questions:

• Can I comfortably afford the higher payment? Shorter terms may reduce total borrowing costs, but the higher monthly payment needs to fit your budget. If your income falls or an unexpected expense appears, missing payments can hurt your credit score and may trigger late fees or other charges.

• Do I plan to pay this off early? Extra principal payments may reduce your interest costs regardless of the original term, but check for a prepayment penalty first.

Then compare the main pros and cons:

• Shorter-term loan pros: You may receive a lower rate, pay less total interest and get out of debt sooner.

• Shorter-term loan cons: You'll usually have a higher monthly payment, which can leave less room in your budget.

• Longer-term loan pros: Lower monthly payments can provide more flexibility and budget breathing room.

• Longer-term loan cons: You'll remain in debt longer and generally pay more total interest.

Also consider two factors that can affect affordability and how much you qualify to borrow:

• Debt-to-income impact: Shorter terms mean higher payments, which can raise your debt-to-income (DTI) ratio and limit how much you qualify to borrow.

• Income stability: If your income fluctuates, a longer term with lower payments can add budget breathing room. If your income is steady, a shorter term’s higher payment may be easier to manage.

Kyle Enright, president of lending at Achieve, said borrowers should start by looking at their actual budget. “Only then can someone truly see exactly what’s coming in and going out each month, and weigh that against their goals,” he said.

A longer term can help when the loan amount is large because it spreads out payments, but that comes with a longer commitment. “A longer-term loan may be helpful if borrowing a large amount,” Enright said. “However, that means being in debt for more time.”

Jonathan Vance, CFP®, EA, founder and financial planner at Vance Financial Planning, said borrowers should weigh "the impact of additional flexibility versus additional cost." If the higher payment on a shorter term squeezes the budget too tightly, he said, the borrower could end up relying on credit cards or other higher-interest debt, which can work against the goal of saving on interest.

The loan term can also affect a borrower's debt-to-income ratio, Vance said. "A shorter term loan with a higher required monthly payment will increase a buyer's debt-to-income ratio when compared with a longer term loan with a lower required monthly payment," he said. Shorter-term loans may reduce total interest, but "it's also important not to overextend yourself on required monthly debt obligations that may otherwise hurt you financially," Vance said.

The goal is to choose the shortest term you can comfortably afford without making the monthly payment difficult to manage.

A loan calculator can help you compare payments and total costs across different terms. Once you know what you can afford, the MoneyLion personal loan marketplace can help you compare offers from multiple lenders. Many allow you to prequalify without affecting your credit.

Key Terms

• Loan term: The set length of time you have to repay a loan, typically expressed in months or years.

• Cost of credit: The total amount you pay above the principal — including interest and fees — to borrow money.

• Annual percentage rate (APR): The yearly cost of borrowing, expressed as a percentage, that includes both the interest rate and certain fees, such as origination charges. 

• Principal: The original amount of money you borrow, not counting interest or fees.

• Installment loan: A loan you repay in fixed, scheduled payments over a set term, such as a personal loan, auto loan or mortgage. Unlike revolving credit, it can't be reused once repaid.

• Prepayment penalty: A fee some lenders charge if you pay off your loan balance before the end of the term. It's worth checking your loan agreement for prepayment penalties before paying ahead of schedule.

• Origination fee: A one-time upfront charge that a lender applies for processing your loan, typically 1% to 10% of the loan amount, deducted from your funds before you receive them.

• Collateral: Property or another asset used to secure a loan, which the lender may claim if you default.

• Secured loan: A loan backed by collateral, such as a car or home.

• Unsecured loan: A loan that does not require collateral and is usually based more heavily on your credit profile, income and debts.

Sources

• Consumer Financial Protection Bureau (CFPB): What is the difference between a loan interest rate and the APR?

• CFPB: What is a prepayment penalty?

• CFPB: Do personal installment loans have fees?

• Federal Reserve Bank of St. Louis (FRB St. Louis): Finance Rate on Personal Loans at Commercial Banks, 24 Month Loan

• CFPB: What is amortization and how could it affect my auto loan?

• CFPB: What is a debt-to-income ratio?

• myFICO: What’s in my FICO Scores?

• MyCreditUnion.gov: Consumer Loans & Credit Cards

Parts of this article were created with AI assistance. MoneyLion editors reviewed, fact-checked and edited the final version and are responsible for its accuracy.

Jeanine Skowronski, CEPF and Jasmin Baron, CCC™, contributed to editing this article.

Photo Credit: Pekic /iStock.com