A bank loan is money the bank lends you, which you repay in fixed monthly payments plus interest over a set period.
When you borrow from a bank, you sign a contract promising to pay back the full amount (called the principal) plus a percentage of that amount as interest—the bank's fee for lending to you. The bank decides how much to lend, what interest rate to charge, and how long you have to repay based on your credit history, income, and what you're borrowing for. You make monthly payments until the loan is paid off. If you stop paying, the bank can take legal action and damage your credit score.
The interest rate you receive depends on the type of loan, current market rates, and your creditworthiness. Someone with a strong credit score and steady income typically gets a lower rate than someone with missed payments or no credit history. The longer the loan term, the more total interest you'll pay, even if the monthly payment is smaller.
Key Takeaways
- Banks lend money based on your credit score, income, and the purpose of the loan, and charge interest as their fee for the risk they take.
- Your monthly payment amount is set when you sign the loan agreement and stays the same for the entire loan term unless you have a variable-rate loan.
- The interest rate you receive depends on market conditions, loan type, and your credit history—a higher credit score usually means a lower rate.
- Missing payments damages your credit score, triggers late fees, and can result in the bank taking legal action to recover the money.
- Paying off a loan early can save you money on interest, though some loans charge a prepayment penalty.
How the bank decides whether to lend to you
Banks use three main factors to decide if they will lend to you and at what rate. Your credit score is a number between 300 and 850 that reflects your history of borrowing and repaying money. It comes from credit bureaus (Equifax, Experian, and TransUnion) that track your payment history, how much debt you carry, and how long you've had credit accounts open. A score above 700 is generally considered good; below 620 is considered poor and makes borrowing expensive or impossible.
Your income is the second factor. The bank wants proof you earn enough to make the monthly payment. You'll typically provide recent pay stubs, tax returns, or bank statements showing regular deposits. The bank calculates your debt-to-income ratio—the percentage of your monthly income that goes to debt payments. Most banks want this ratio below 43 percent, meaning if you earn $5,000 a month, your total debt payments shouldn't exceed about $2,150.
The third factor is collateral—an asset the bank can take if you don't repay. A car loan is secured by the car itself; a mortgage is secured by the house. Unsecured loans like personal loans have no collateral, so banks charge higher interest rates to offset the risk. If you have collateral, you'll get a lower rate.
Types of bank loans and how they differ
Banks offer different loan types for different purposes, and each has different terms. A personal loan is unsecured money you can use for almost anything—debt consolidation, home repairs, medical bills. You typically repay it over two to seven years. A car loan is secured by the vehicle and usually lasts three to six years. A mortgage is a long-term secured loan for buying a house, typically lasting 15 or 30 years.
A home equity line of credit (HELOC) lets you borrow against the value of your home and draw money as needed, like a credit card. A student loan from a bank (as opposed to federal student loans) works like a personal loan but is meant for education costs. Each type has different interest rates, repayment terms, and rules about what happens if you miss a payment.
Interest rates also vary by type. Mortgages typically have the lowest rates because they're secured and long-term. Car loans are next, then personal loans, which carry the highest rates because they're unsecured. Within each type, your individual rate depends on your credit score and the current market.
What happens during the loan application and approval process
When you apply for a loan, the bank pulls your credit report and score from the three credit bureaus. This is called a hard inquiry and temporarily lowers your score by a few points. The bank reviews your income, existing debts, and the purpose of the loan. For larger loans like mortgages or car loans, the bank may order an appraisal or inspection of the asset you're buying.
The bank then issues a loan estimate or pre-approval letter showing the loan amount, interest rate, monthly payment, and total interest you'll pay over the life of the loan. This is not a may provide—the rate can change if market conditions shift or if your credit score drops before closing. You review the terms, and if you agree, you sign the promissory note, which is the legal contract binding you to repay.
For mortgages and car loans, closing happens next: you sign final paperwork, the bank funds the money, and the lender records the lien (their legal claim to the asset). For personal loans, the bank deposits the money into your account within one to three business days. You then begin making monthly payments on the schedule outlined in your contract.
How monthly payments are calculated and what they cover
Your monthly payment is calculated using a formula that spreads the principal and interest across the loan term. Early in the loan, most of your payment goes toward interest; later, more goes toward principal. This is why paying off a loan early saves significant money—you avoid years of interest payments.
For example, on a $20,000 car loan at 6 percent interest over five years, your monthly payment is roughly $386. Over 60 months, you pay about $23,160 total—$3,160 of that is interest. If you pay off the loan in three years instead, you pay far less interest because you're not making those final 24 payments.
Your payment amount is fixed unless you have a variable-rate loan, where the interest rate (and therefore the payment) can change. Most mortgages have a fixed rate, but some start with a low fixed rate for a few years, then adjust. Always check your loan documents to see if your rate is fixed or variable.
What happens if you miss a payment or fall behind
If your payment is late by 30 days, the bank reports it to the credit bureaus, and your credit score drops. You'll also owe a late fee, typically $25 to $50 or a percentage of the payment. If you're 60 days late, the damage to your credit score is worse. At 90 days late, the bank may declare the loan in default and begin collection efforts.
Once in default, the bank can pursue several actions. For secured loans like car loans or mortgages, the bank can repossess the asset—take back the car or foreclose on the house. For unsecured loans, the bank can sue you in court, obtain a judgment, and garnish your wages or freeze your bank account. A default stays on your credit report for seven years and makes it nearly impossible to borrow again at a reasonable rate.
If you're struggling to make payments, contact your bank immediately. Many banks offer loan modification (changing the terms to lower the payment), forbearance (temporarily pausing payments), or deferment (postponing payments to the end of the loan). These options protect your credit better than missing payments, though they may cost you more interest in the long run.
Paying off a loan early and understanding prepayment penalties
You can pay off a loan faster by making extra payments toward the principal. This saves you interest and shortens the loan term. Some borrowers make biweekly payments instead of monthly, or add a lump sum when they receive a bonus or tax refund. The bank must apply extra payments to principal, not to future interest.
However, some loans charge a prepayment penalty—a fee for paying off early. This is more common with mortgages and car loans than personal loans. The penalty is usually a percentage of the remaining balance or a set number of months' interest. Before taking out a loan, ask whether prepayment penalties apply and what they cost. If you plan to pay off early, a loan without a penalty is worth seeking out.
Paying off a loan early also affects your credit score slightly. Your credit mix (having different types of credit) and payment history matter for your score, so closing an account can lower it temporarily. The benefit of saving interest usually outweighs this small, temporary dip.
The difference between fixed-rate and variable-rate loans
A fixed-rate loan has an interest rate that never changes. Your monthly payment stays the same for the entire loan term, making budgeting predictable. Most personal loans, car loans, and traditional mortgages are fixed-rate.
A variable-rate loan has an interest rate tied to a market index, so it can go up or down. Some mortgages start with a low fixed rate for three to ten years (called an ARM, or adjustable-rate mortgage), then adjust annually based on market conditions. If rates rise, your payment rises; if rates fall, your payment falls. Variable-rate loans are riskier because your payment could increase significantly, making them harder to budget for.
When comparing loans, always ask whether the rate is fixed or variable. If variable, ask what the rate can adjust to, how often it adjusts, and what the maximum possible payment could be. Fixed-rate loans are usually safer for borrowers because you know exactly what you'll pay each month.
Frequently Asked Questions
What's the difference between a bank loan and a credit card?
A bank loan gives you a lump sum upfront that you repay in fixed monthly payments over a set period. A credit card is a revolving line of credit—you can borrow, repay, and borrow again up to your limit, and you only pay interest on the balance you carry. Loans have lower interest rates but less flexibility; credit cards have higher rates but more flexibility.
Can I get a loan if I have bad credit?
Yes, but you'll pay a higher interest rate and may need collateral or a co-signer. Some banks offer loans specifically for people rebuilding credit, though the rates are steep. Credit unions sometimes offer better terms than banks for borrowers with lower scores. Improving your credit score before applying will save you thousands in interest.
What happens to my loan if the bank is bought by another bank?
Your loan terms don't change, but you'll make payments to the new bank. The new bank must honor the original contract. You'll receive notice of the transfer and new payment instructions. Your rights and obligations stay the same.
Can I refinance a loan to get a lower interest rate?
Yes. Refinancing means taking out a new loan to pay off the old one. If interest rates have dropped or your credit score has improved, you may may have access to for a lower rate. Refinancing costs money (application fees, appraisals), so calculate whether the savings outweigh the costs before applying.
What's the difference between a loan and a line of credit?
A loan is a lump sum you receive upfront and repay in fixed payments. A line of credit is money you can draw from as needed, like a credit card. You only pay interest on what you use. Lines of credit are more flexible but often have higher interest rates than loans.