Debt & Loan Glossary
Plain-English definitions for the terms you encounter when paying off debt — no jargon, no fluff.
A
Amortization
The process of gradually paying off a loan through regular payments over time. Each payment covers accrued interest first; the remainder reduces the principal balance. Early in a loan's life, most of each payment goes to interest. As the balance shrinks, more goes to principal. An amortization schedule shows this breakdown payment by payment.
Annual Percentage Rate (APR)
The yearly cost of borrowing money, expressed as a percentage. APR includes the interest rate plus any mandatory fees (origination fees, mortgage insurance, etc.), making it a more complete measure of cost than the raw interest rate. Comparing APRs — not interest rates — is the best way to evaluate competing loan offers.
Avalanche Method
A debt payoff strategy in which you rank your debts by interest rate (highest first) and direct every extra dollar to the highest-rate balance while paying minimums on all others. When the top debt is eliminated, you roll its payment into the next highest rate. The avalanche method minimizes total interest paid over the life of the payoff plan.
B
Balance Transfer
Moving an existing credit card balance to a new card, typically to take advantage of a 0% introductory APR promotion. Balance transfers usually charge a fee of 3–5% of the transferred amount. Used strategically, they can pause interest accumulation for 12–21 months, letting you pay down principal faster.
D
Debt Consolidation
Combining multiple debts into a single loan, often at a lower interest rate. Common methods include a personal consolidation loan, a home equity loan, or a balance transfer card. Consolidation simplifies repayment and can reduce interest costs, but it does not eliminate the debt — it restructures it.
Debt Snowball Method
A debt payoff strategy in which you rank debts by balance (smallest first) and attack the smallest balance aggressively while paying minimums on larger debts. Each paid-off account builds momentum and motivation. Mathematically, the snowball typically costs more in interest than the avalanche, but psychological wins help many people stick with the plan.
Debt-to-Income Ratio (DTI)
Your total monthly debt payments divided by your gross monthly income, expressed as a percentage. Lenders use DTI to assess your ability to take on additional debt. A DTI below 36% is generally considered healthy; most mortgage lenders require a DTI below 43–50%. Paying off debts reduces DTI and improves borrowing terms.
Default
Failure to repay a loan according to the agreed terms — typically defined as being 90–270 days past due, depending on the loan type. Defaults result in severe credit score damage, collections activity, potential lawsuits, wage garnishment, and (for mortgages) foreclosure. A loan in default usually has accelerated the full balance due immediately.
Delinquency
Being overdue on a loan payment, typically 30 days or more past the due date. Delinquencies are reported to credit bureaus and damage your credit score. A delinquency is less severe than a default but is the first step toward it. Most lenders charge late fees once a payment is 15–30 days late.
E
Extra Payment
Any amount paid toward a loan above the required minimum monthly payment. Extra payments applied to principal directly reduce the outstanding balance, which reduces the amount of future interest that accrues. Even small extra payments — $50 to $200 per month — can shorten loan terms by years and save thousands of dollars in interest.
F
Fixed Interest Rate
An interest rate that does not change for the life of the loan. Monthly payments remain constant, making budgeting predictable. Fixed rates are common on mortgages, auto loans, and personal loans. They protect borrowers from rate increases but do not benefit from rate decreases unless the loan is refinanced.
G
Grace Period
A window of time after a payment due date during which you can pay without incurring a late fee or penalty. Credit card grace periods also refer to the time between the close of a billing cycle and the payment due date — if you pay in full during this window, you owe no interest on purchases.
I
Interest
The cost of borrowing money, calculated as a percentage of the outstanding loan balance. On most consumer loans, interest accrues daily based on the annual rate divided by 365 (or 360, depending on the lender). The higher your balance and the higher the rate, the more interest accrues each day.
L
Loan Term
The length of time you have to repay a loan, typically expressed in months or years. Longer terms mean lower monthly payments but more total interest paid. Shorter terms mean higher payments but significantly less interest. For example, a $20,000 auto loan at 7% over 60 months costs about $2,200 more in interest than the same loan over 36 months.
M
Minimum Payment
The smallest amount a lender will accept each month to keep the account in good standing. On credit cards, minimums are typically 1–2% of the balance or $25 (whichever is greater). Paying only minimums on a high-rate credit card can take decades to pay off and result in paying two to three times the original balance in total interest.
O
Origination Fee
A one-time fee charged by a lender to process a new loan, typically 0.5–5% of the loan amount. Origination fees are often deducted from the loan proceeds, meaning you receive slightly less than the stated loan amount. They are factored into the APR, which is why APR is higher than the stated interest rate on many loans.
P
Payoff Amount
The exact amount needed to fully satisfy a loan on a specific date, including all outstanding principal, accrued interest, and any fees. Because interest accrues daily, the payoff amount changes every day and is always slightly higher than the current statement balance. Contact your lender for an official 10-day payoff quote if you plan to pay in full.
Principal
The original amount borrowed, or the remaining balance owed before interest is added. When you make a loan payment, the portion that goes to principal directly reduces what you owe. The portion that goes to interest is the cost of having borrowed that money. Extra payments reduce principal and therefore reduce future interest charges.
R
Refinancing
Taking out a new loan to pay off an existing loan, typically to obtain a lower interest rate, change the loan term, or access equity. Refinancing costs include closing costs, appraisal fees, and sometimes prepayment penalties on the original loan. The break-even point — when your monthly savings offset the refinancing costs — is usually 12–36 months.
S
Snowball Method
See "Debt Snowball Method." The snowball method prioritizes paying off the smallest balance first regardless of interest rate. It provides quick psychological wins that keep many borrowers motivated to stay on their plan.
V
Variable Interest Rate
An interest rate that fluctuates over time based on an underlying index (such as the Prime Rate or SOFR). Variable rates are common on credit cards, HELOCs, and some student loans. They may start lower than fixed rates, but they expose borrowers to payment increases if market rates rise.
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