How a Business Line of Credit Works and When to Use One

A landscaping company I worked with had $40,000 in signed spring contracts and $3,200 in the bank in February. The work was real, the clients were reliable, and the money would arrive in April. What they needed was not a loan for five years. They needed $18,000 for eight weeks.

That gap is exactly what a business line of credit is built for. It is also one of the most misused funding tools I see, because owners treat it like free money with a limit attached. Below is how a business line of credit works in practice, what it really costs, when it is the right choice and when a different kind of funding will serve you better.

How a Business Line of Credit Works

A lender approves you for a maximum amount, say $50,000. You draw only what you need, when you need it. Interest is charged only on the amount you have drawn, and as you repay, that amount becomes available again. That is the meaning of "revolving."

Compare it to a term loan, where you receive the full sum on day one and pay interest on all of it from the start. If the landscaper had taken an $18,000 term loan over three years, they would have paid interest for 36 months on a problem that lasted two.

Feature	Line of credit	Term loan
Money received	Drawn as needed	Lump sum up front
Interest charged on	Drawn balance only	Full loan balance
Best for	Short gaps, timing problems	Equipment, expansion, one time purchases
Reusable	Yes, as you repay	No, apply again

What It Really Costs Beyond the Interest Rate

The headline rate is only part of the price. Bank lines are often priced as the prime rate plus a margin, while online lenders usually charge noticeably more in exchange for faster approval and looser requirements. Before you sign, ask about each of these in writing:

Annual or maintenance fee. A flat charge, often a few hundred dollars, paid whether you draw or not.
Draw fee. Some lenders charge a percentage every time you take money out. On frequent small draws this adds up quickly.
Inactivity fee. A charge for not using the line, which pushes owners to borrow when they do not need to.
Repayment schedule. Some online lines require weekly payments on each draw over six to eighteen months, which behaves more like a series of short loans than a true revolving line.

To compare offers fairly, model one realistic scenario, for example drawing $15,000 for 60 days twice a year, and calculate the total dollars paid under each offer. The cheapest rate is not always the cheapest line.

When a Line of Credit Is the Right Tool

The rule I use with clients is simple: borrow on a line only for gaps where you can point to the money that will repay it. Good uses include:

Seasonal businesses buying stock or paying staff ahead of a predictable busy period.
Covering a 45 or 60 day wait on invoices from a client that always pays, just slowly.
Taking a supplier's early payment discount when the discount is worth more than the interest.
A genuine emergency, such as a broken delivery van, while you arrange longer financing.

If you are regularly chasing slow payers, fixing the collections process often matters more than the funding. Many owners who think they need credit actually need better invoicing habits.

The Advice I Disagree With

You will often hear "take the biggest limit they offer, you might need it." I think that is poor advice for most small businesses.

A larger limit invites larger draws, and a line is easy to drift into using for permanent costs like rent and salaries. Once that happens, the balance never comes down and you are paying revolving rates on what is really long term debt. A large unused limit can also count against you when you apply for other credit, because lenders see how much you could borrow tomorrow.

The second piece of advice I push back on is "a line of credit is always cheaper than a term loan." It is cheaper for short gaps. For a balance you carry for two years, a properly priced term loan with a fixed rate is usually cheaper and far more predictable. Match the tool to the length of the problem.

What Lenders Look at Before Approving You

Requirements vary, but most lenders check the same handful of things. Banks commonly want at least two years of trading history, steady revenue and healthy personal and business credit. Online lenders may accept six to twelve months of history but price the risk into the cost.

Bank statements for the last three to twelve months, showing regular deposits.
Tax returns and financial statements, often for two years.
Credit history, both business and personal. If yours is thin, read our guide on building business credit from scratch before applying.
Collateral or a personal guarantee. Unsecured lines nearly always require you to guarantee the debt personally.

Apply when your numbers are strong, not when you are already short. A line opened in a good quarter is far easier to obtain than one requested the week payroll bounces.

Terms Worth Reading Twice

Bank lines often include a clean up requirement, also called a rest period, which means paying the balance down to zero for a set number of consecutive days each year, frequently 30. It is designed to prove you are not using the line as permanent capital. If your business could not survive a month with a zero balance, that is a warning sign worth taking seriously.

Look also for covenants, such as a minimum cash balance or a maximum debt ratio, and for the lender's right to reduce or freeze the line. Lines are typically reviewed every year, and a lender can cut your limit when the economy tightens, which is precisely when you might want it most. Our article on telling good business funding from a trap lists more clauses to watch.

Running the Line Without Letting It Run You

A few habits keep a line healthy. Write a repayment date next to every draw before you make it. Review the balance at the same time as your monthly bookkeeping. Set an internal ceiling below the approved limit, for example 60 percent, and treat anything above it as a reason to stop and rethink. If the balance has not touched zero in six months, the line has quietly become a loan.

Frequently Asked Questions

Does a business line of credit affect my personal credit?

It can. Many lenders check your personal credit when you apply, and if you sign a personal guarantee, missed payments may be reported against you personally.

Can a new business get a line of credit?

Some online lenders approve businesses with six months of revenue, though costs are higher. Starting with a small secured line or a business credit card is often more realistic.

How fast can I access the money?

Once the line is open, most draws reach your account within one or two business days, and some lenders transfer the same day.

Use It for Timing, Not for Survival

A business line of credit is excellent for timing problems and expensive for structural ones. Open it while trading is good, keep the limit modest, attach a repayment source to every draw and let the balance hit zero regularly. If you need the money for longer than a few months, look at a term loan instead. For other options, see the rest of our funding guides.