Lending money is a financial transaction in which one party gives funds to another under a legal promise that the money will be returned on agreed terms, usually with interest. The party putting up the money is the lender; the party receiving it is the borrower. Almost every major purchase most people make, from a car to a home to a college education, runs through some version of this arrangement, and the terms carry real legal weight on both sides.
The Pieces of a Loan
The original sum handed over is the principal. On top of that, the borrower pays interest, expressed as a percentage of the principal, as the price of using someone else’s money. How that interest is calculated depends on the loan type.
The deal itself is written down, typically in a promissory note. That’s a signed document containing an unconditional promise to repay a specific amount to the lender or to whoever ends up holding the note. The note sets the repayment schedule, the interest rate, and the maturity date on which the full balance comes due.
How much interest a lender is allowed to charge is a state-by-state question. Some states cap general consumer loan rates in the single digits. Others allow rates above 25% for certain categories. A handful set no ceiling at all for some transaction types. The limit also shifts with the type of lender, the size of the loan, and whether the borrower is a consumer or a business. A company borrowing from a bank operates under different rules than an individual borrowing from an unlicensed person.
Secured and Unsecured Loans
Loans fall into two broad camps based on whether an asset is pledged as backup.
In a secured loan, the borrower pledges specific property, and the lender gets a legal interest in it called a lien. The lien stays attached until the loan is paid off. Mortgages and auto loans are the familiar examples: the house or car itself secures the debt. For personal property such as equipment, inventory, or vehicles, these arrangements run through Article 9 of the Uniform Commercial Code, which most states have adopted. Article 9 covers how a security interest is created, how a lender establishes priority against other creditors, and what happens on default. Lenders usually file a financing statement, known as a UCC-1, with a state office to put the public on notice that they hold a claim against the collateral.1Legal Information Institute. UCC Article 9 – Secured Transactions (2010)
If payments stop, the lender can seize and sell the collateral. If the sale doesn’t cover the balance, in most states the lender can go to court for a deficiency judgment, a court order requiring the borrower to pay the shortfall out of other income or assets. Roughly 16 states have anti-deficiency laws that restrict or prohibit this for certain loan types, especially home mortgages. Elsewhere, losing the property doesn’t necessarily end the debt.
Unsecured loans have no specific asset behind them. Credit cards, personal loans, and most student loans are unsecured. Because the lender has nothing to grab if the borrower stops paying, interest rates run higher to cover the added risk.
Lenders size up unsecured borrowers largely through credit scores, which compress borrowing history into a number between 300 and 850. Higher is lower risk. A base FICO score in the 670 to 739 range is generally considered good; below 620 is subprime. The score affects both approval and the rate offered. Two borrowers taking out identical loans can pay thousands of dollars apart in total interest based on nothing more than their credit profiles.
What a Co-Signer Actually Agrees To
When a borrower’s credit or income isn’t strong enough to qualify alone, a lender may accept a co-signer. This is a point where people regularly misunderstand what they’ve signed up for. A co-signer is not a character reference. A co-signer is legally on the hook for the full debt if the primary borrower stops paying. The lender can go after the co-signer directly, without first trying to collect from the borrower, using the same tools available against any debtor: lawsuits, wage garnishment, and bank levies.2Consumer Advice – FTC. Cosigning a Loan FAQs
Federal rules require lenders to give every co-signer a written notice before the obligation takes effect. The notice must stand alone as its own document and spell out that the co-signer may have to pay the full amount, that a default will land on the co-signer’s credit record, and that the creditor can come after the co-signer without first pursuing the primary borrower.3eCFR. 16 CFR Part 444 – Credit Practices Co-signing also counts against the co-signer’s debt-to-income ratio, which can make it harder for them to borrow for themselves later.
What Lenders Must Tell You Before You Sign
Before any consumer loan closes, federal law requires the lender to provide a Truth in Lending Act (TILA) disclosure. Regulation Z requires this disclosure to be delivered before the transaction is completed.4Consumer Financial Protection Bureau. 12 CFR 1026.17 – General Disclosure Requirements The disclosure breaks out the annual percentage rate (APR), the total finance charges, and the total amount you’ll repay over the life of the loan.5Consumer Financial Protection Bureau. 12 CFR Part 1026 – Truth in Lending (Regulation Z) APR is the comparison number worth watching, because it rolls the interest rate and certain fees into one annualized figure.
For some loans secured by your primary home, including refinances and home equity lines of credit, there’s an additional safety net. You have three business days after closing to cancel the transaction, no reason required. This right of rescission runs until midnight of the third business day after you sign the loan documents, receive the TILA disclosure, or receive the rescission notice, whichever happens last.6Office of the Law Revision Counsel. 15 USC 1635 – Right of Rescission as to Certain Transactions The right does not apply to the purchase-money mortgage you use to buy a home in the first place. It’s aimed at refinances and home equity borrowing, where high-pressure sales tactics are more common.
Prepayment Penalties
Paying off a loan early saves interest, but some lenders charge a prepayment penalty to recover income they lose when you pay ahead of schedule. The penalty is usually calculated as a flat fee, as a percentage of the outstanding balance, or as the amount of interest the lender would have earned over the remaining term. Depending on loan size and timing, that can run from a few hundred to several thousand dollars.
Federal rules bar prepayment penalties on “qualified mortgages,” a category covering most standard home loans originated since 2014. For personal loans and auto loans, there’s no blanket federal ban, so the loan contract itself controls. Read the prepayment clause before signing, and run the numbers before paying off a loan early when one is in place. Sometimes the penalty exceeds the interest you’d save.
If You Fall Behind
Default sets off an escalating chain of consequences. The specifics depend on whether the loan is secured or unsecured.
Credit damage comes first. A payment that’s 90 days or more late stays on your credit report for seven years, and the score hit is steepest for borrowers who had the highest scores going in.
If informal collection doesn’t work, the lender or a debt collector can sue. If you don’t respond, the court enters a default judgment for the creditor. That judgment unlocks powerful collection tools: wage garnishment, bank levies, and liens on property you own.
Federal law caps garnishment for ordinary consumer debts at the lesser of 25% of your disposable earnings or the amount by which your weekly disposable earnings exceed 30 times the federal minimum wage ($7.25 per hour, or $217.50 per week). If your disposable weekly earnings are below $217.50, your wages can’t be garnished at all for consumer debts.7Office of the Law Revision Counsel. 15 USC 1673 – Restriction on Garnishment Higher ceilings apply for child support, tax debts, and bankruptcy orders. Many states set stricter limits, so what a creditor can actually take depends on where you live.
Your Rights as a Borrower
Several federal laws govern how lenders and collectors treat borrowers. They’re worth knowing by name, because they’re the rules to invoke when something goes wrong.
Equal Credit Opportunity Act
The Equal Credit Opportunity Act makes it illegal for any creditor to discriminate against a loan applicant based on race, color, religion, national origin, sex, marital status, or age. It also prohibits discrimination because an applicant’s income comes from public assistance, or because the applicant has exercised any right under the Act.8Office of the Law Revision Counsel. 15 USC 1691 – Scope of Prohibition If you’re denied credit, the lender is required to explain the reasons.
Fair Debt Collection Practices Act
Once a debt reaches a third-party collector, the Fair Debt Collection Practices Act restricts how the collector can behave. Collectors can’t call before 8 a.m. or after 9 p.m., can’t contact you at work if they know your employer prohibits it, and can’t harass you by phone, text, email, or social media. If you have an attorney, the collector must communicate with the attorney instead of you.9Consumer Financial Protection Bureau. What Laws Limit What Debt Collectors Can Say or Do
Fair Credit Reporting Act
Under the Fair Credit Reporting Act, you have the right to dispute incomplete or inaccurate information on your credit report. Once you file a dispute, the credit reporting agency must investigate and correct or remove unverifiable information, generally within 30 days.10Consumer Financial Protection Bureau. A Summary of Your Rights Under the Fair Credit Reporting Act This matters most after a delinquency, where errors in reported balances or payment dates can make the credit damage worse than it should be.
Taxes on Borrowed and Forgiven Money
Borrowed money isn’t income. You received it, but you owe it back, so there’s nothing for the IRS to tax. That changes the moment a lender forgives any part of what you owe.
When a creditor cancels a debt or accepts less than the full balance, the forgiven amount is generally taxable income in the year of cancellation.11Internal Revenue Service. Topic No. 431, Canceled Debt – Is It Taxable or Not? A creditor who cancels $600 or more sends you a Form 1099-C.
Several exclusions can take you out of that result. Debt discharged in bankruptcy doesn’t count as income. Neither does debt canceled while you’re insolvent, meaning your total debts exceed the fair market value of everything you own. Canceled farm debts and certain business real estate debts also qualify. Claiming any of these exclusions requires filing Form 982 with your return and reducing certain tax attributes by the excluded amount.12Internal Revenue Service. Publication 4681 (2025), Canceled Debts, Foreclosures, Repossessions, and Abandonments
One change worth flagging for 2026: the exclusion for forgiven mortgage debt on a principal residence expired for discharges after December 31, 2025. Homeowners who negotiate a short sale or a loan modification that reduces their mortgage balance will now face a tax bill on the forgiven amount, unless the bankruptcy or insolvency exclusion applies.12Internal Revenue Service. Publication 4681 (2025), Canceled Debts, Foreclosures, Repossessions, and Abandonments
On the deduction side, interest paid on a mortgage for a primary or secondary residence is deductible, subject to limits on the total mortgage balance. Student loan interest is partially deductible for borrowers within certain income thresholds. Interest on personal loans and credit cards is generally not deductible unless the borrowed funds went to business or investment purposes. Starting in 2026, a separate deduction allows up to $10,000 per year of interest paid on auto loans used to buy a qualifying vehicle assembled in the United States, phasing out above $100,000 of modified adjusted gross income ($200,000 for joint filers) and limited to loans originated after December 31, 2024.13Internal Revenue Service. One, Big, Beautiful Bill Provisions – Individuals and Workers