What it is, how it works
A business line of credit is a flexible, revolving way to fund a company. Instead of receiving one lump sum, you are approved up to a set credit limit and then draw only what you need, when you need it. As you repay what you have drawn, that capacity refreshes and becomes available to use again. This is why it is often called a revolving line of credit, or in some markets a revolving credit facility. It sits in the background, ready, rather than being a single one-off advance.
The most important thing to understand is how a line of credit differs from a term loan. With a term loan you take the full amount up front and repay it on a fixed schedule from day one. With a line of credit you usually pay interest only on the portion you have actually drawn, not on the whole limit. If you are approved for a limit but only draw a small part of it, you are only charged on that smaller balance. Drawing, repaying and redrawing typically happens through an online dashboard or a simple transfer into your business account.
Because of this structure, a line of credit suits needs that are recurring, uneven or hard to predict, rather than a single large purchase. Owners often keep one open as a buffer, so cash is on hand the moment an opportunity or a short gap appears, without having to make a fresh funding request every time.