A line of credit is a pre-approved borrowing arrangement that gives a borrower access to a maximum credit limit, which they can draw against, repay, and draw against again repeatedly, without needing to apply for a brand new loan each time funds are needed. This revolving structure distinguishes a line of credit from a conventional installment loan, which disburses a fixed amount once and does not allow further borrowing once repaid.
Lines of credit are offered in both secured and unsecured forms, including home equity lines of credit secured against property, business lines of credit used to manage cash flow, and unsecured personal lines of credit extended based primarily on the borrower's creditworthiness.
Line of credit in plain terms
A line of credit works much like a reusable borrowing allowance: a borrower is approved for a maximum amount, and can use any portion of it as needed, repay what they have used, and then draw on that same allowance again later, all without the delay and paperwork of applying for an entirely new loan each time a need arises. Interest is generally charged only on the amount actually drawn at any given time, not on the full approved limit sitting unused.
Common types of lines of credit
- Personal lines of credit, offering flexible access to funds for unexpected expenses or ongoing needs, typically unsecured and based on the borrower's credit profile.
- Home equity lines of credit, secured against a borrower's home equity, typically offering lower rates than unsecured lines.
- Business lines of credit, used to manage uneven cash flow, cover short-term working capital needs, or bridge gaps between outgoing expenses and incoming revenue.
How a line of credit differs from a credit card
A line of credit and a credit card share the same revolving structure, but a line of credit typically offers a larger available limit, often at a lower interest rate, and is usually accessed by transferring funds to a bank account rather than by making point-of-sale purchases directly, making it better suited to larger, planned expenses or cash-flow management than everyday spending.
Managing a line of credit responsibly
Because a line of credit can be drawn upon repeatedly, borrowers are generally advised to treat it as a planned financial tool rather than an open invitation to spend, tracking outstanding balances carefully and understanding that, like any revolving credit, consistently carrying a large drawn balance can both accrue significant interest and affect credit utilization measures that factor into a borrower's overall credit score.
Some lenders reduce or freeze an unused line of credit if a borrower's financial circumstances deteriorate, even without any missed payment, since the lender is still exposed to the full approved limit for as long as the line remains open regardless of how much has actually been drawn.
Interest on a line of credit is typically calculated daily based on the outstanding drawn balance, meaning a borrower who repays quickly after drawing funds pays considerably less total interest than one who lets the drawn balance sit for an extended period before repaying it.
A borrower who repeatedly draws a line of credit down to its limit and makes only minimum payments can find themselves in a position similar to persistent credit card debt, despite the generally lower rate a secured line of credit typically carries.
Some lines of credit include an annual maintenance fee charged simply for keeping the line open, regardless of whether it is ever used, a cost borrowers should factor in when comparing a line of credit against simply applying for a new loan only when funds are actually needed.
A line of credit's variable rate is typically reviewed and potentially adjusted on a set schedule, such as monthly or quarterly, giving a borrower at least some advance visibility into exactly when a rate change might take effect rather than facing adjustments with no warning at all.