Debt, Credit, and Interest
Plain English
Debt is money borrowed that must be paid back, usually with interest — an extra cost for borrowing. A credit score is a number that estimates how likely you are to repay debt, based on your borrowing history.
What is it?
Debt is an obligation to repay borrowed money, typically with interest — an additional amount charged for the use of the money, usually expressed as an annual percentage rate (APR). Credit refers to the ability to borrow, and a credit score is a numeric estimate (in the U.S., commonly 300–850) of how likely someone is to repay debt, based on their credit history.
Why does it matter?
The interest rate on debt determines how much it actually costs to borrow over time. High-interest debt (like many credit cards) can grow quickly if only minimum payments are made, while lower-interest debt (like many mortgages) is a more routine part of many financial plans.
How does it work?
Interest generally accrues on the outstanding balance. Credit scores are calculated by credit bureaus using factors that typically include payment history, amounts owed, length of credit history, new credit, and credit mix — the exact formulas are proprietary to each scoring model.
Risks and limitations
Missing payments can lower a credit score and trigger fees or penalty interest rates. Not all debt is equivalent — the same dollar amount at a much higher interest rate costs substantially more over time. Debt collection has specific consumer protections that vary by situation.
Questions to ask a professional
What is the actual interest rate and total cost of this debt over its lifetime? Are there fees beyond the stated interest rate? What are my rights if I'm contacted by a debt collector?