Business Line of Credit Explained: How Draw, Repay, Repeat Actually Works (2026)

A business line of credit is the most misunderstood product in small business funding, because it looks like a loan and behaves like something else entirely. You are approved for a limit, you draw only what you need, you pay interest only on what you have drawn, and as you repay, the credit becomes available again. That revolving motion — draw, repay, repeat — is the whole point, and it is what makes a line the right tool for a specific set of problems and the wrong tool for others.

This guide explains how a business line of credit actually works: the draw and repayment cycle, what it costs, how it differs from a term loan and a merchant cash advance, what lenders check before approving one, and the mistakes that turn a useful safety net into an expensive habit.

How the draw, repay, repeat cycle works

Approval gives you a credit limit, not a lump sum. Nothing is disbursed until you draw. A draw moves money into your business account, usually within one business day, and interest starts accruing only on the drawn balance. When revenue arrives, you repay some or all of the balance, and the repaid portion becomes available to draw again. There is no new application for the next draw, as long as the account is in good standing and within its term.

Most business lines have a draw period — often around 12 months — during which you can draw and repay freely, followed by a repayment period in which the remaining balance is paid down over a set schedule and no new draws are allowed. Some lines renew annually after a review of your recent financials. Read the agreement for both dates: a line that cannot be redrawn after month twelve is a very different product from one that renews.

Minimum payments are usually interest-only or interest plus a small principal portion during the draw period. That flexibility is useful in a slow week and dangerous over a long stretch: paying interest only for months leaves the principal untouched, and the balance is still due when the repayment period starts.

What a line of credit actually costs

The headline cost is the interest rate on the drawn balance. Lines are commonly priced as a benchmark rate plus a margin that depends on your credit, revenue, and time in business, so the rate moves over time rather than staying fixed. Ask for the current rate, how often it adjusts, and whether there is a floor — a minimum rate the line can never fall below even if the benchmark drops.

Beyond interest, check for a draw fee, an annual or maintenance fee, and an inactivity fee on some lines. None of these are necessarily deal-breakers, but they change the math on a line you rarely use: a line drawn twice a year with a large annual fee can cost more than a slightly higher-rate line with no fee. Compare offers on total annual cost at your realistic draw pattern, not on the rate alone.

The honest comparison for any line is the total dollars you will pay over the time you expect to carry the balance. A line at a moderate rate that you repay in six weeks can cost less than a lump-sum advance with a fixed fee that you repay over six months — and more than a term loan if you carry the balance for a year without paying principal down. The product is only cheap when the repayment discipline matches the need.

Line of credit vs. term loan vs. merchant cash advance

The practical rule: if you can name the single thing the money buys and its price, a term loan or equipment financing is usually the cleaner fit. If the need is a gap that opens and closes — customers pay late, a season ramps, inventory turns — the line is built for exactly that.

What lenders check before approving a line

• Revenue and cash flow: steady deposits and a positive average balance matter more than any single big month. Lenders read bank statements for consistency, not peaks.
• Time in business: most lines require a trading history; newer businesses are more likely to be offered smaller limits or a secured line.
• Credit: the owner's personal credit usually factors in, especially for unsecured lines. A secured line, backed by receivables, inventory, or equipment, can offset weaker credit.
• Existing debt: current advances and loans reduce the available limit, because the lender is sizing the line against total monthly obligations, not just this one product.
• Use of funds: lenders prefer working capital uses — payroll, inventory, receivables gaps — over refinancing existing debt or speculative expansion.

Five mistakes that turn a good line into a bad one

1. Using the line as permanent capital. A balance carried for a year at interest-only payments is not working capital anymore; it is expensive debt. If a draw will not be repaid within a few months, refinance it into a term product.

2. Drawing the full limit at approval. A maxed-out line leaves no room for the emergency it was meant to cover, and lenders notice: a line drawn to the limit at review time is a common reason renewals get cut.

3. Ignoring the renewal date. Lines expire. If your draw period ends while a balance is outstanding, repayment terms change and new draws stop. Calendar the renewal review and keep statements clean in the months before it.

4. Paying interest only while revenue is strong. The best time to pay principal down is when cash is flowing. Interest-only payments in good months are how a short-term bridge becomes a long-term balance.

5. Stacking a line on top of daily-debit advances. A line plus one or more advances can look manageable until the fixed debits and the line payment land in the same slow week. Size total monthly obligations across all products before drawing.

Secured vs. unsecured lines

An unsecured line requires no specific collateral and is priced for the risk — smaller limits, tighter credit requirements, higher rates. A secured line is backed by business assets such as receivables, inventory, or equipment: the limit is usually larger and the rate lower, but the lender can claim the collateral if the line is not repaid, and some secured lines require a blanket lien on business assets. For a first line, many businesses start unsecured at a modest limit and graduate to larger secured facilities as revenue and history grow.

When a line is the wrong product

A line is a poor fit for a one-time purchase that will take years to pay off, for covering sustained operating losses, and for refinancing a stack of advances without fixing the underlying cash problem. In each case the revolving structure hides the real cost: the balance never falls, the interest keeps running, and the business is no further ahead a year later. If the need is fixed and long-term, match it with fixed, long-term financing.

Used for what it is built for — bridging timing gaps, smoothing seasons, and covering the float between spending and collecting — a business line of credit is the cheapest flexible capital most small businesses will ever hold. Apply with recent bank statements ready, compare the total annual cost at your real draw pattern, and treat the limit as a ceiling you rarely touch, not a balance you are expected to carry.

Educational information only; this guide is not financial, legal, or tax advice. Rates, fees, limits, and qualification standards vary by lender and by file. Confirm the current rate, fees, draw period, and renewal terms in writing before accepting any line of credit.

Frequently asked questions

How does a business line of credit work?

You are approved for a credit limit and draw funds as needed, paying interest only on the drawn balance. As you repay, the credit becomes available again, so you can draw, repay, and redraw during the draw period without reapplying.

Do you pay interest on the full credit limit or only what you draw?

Only on what you draw. The undrawn portion costs nothing in interest, though some lines charge an annual, maintenance, or inactivity fee — check the fee schedule before comparing rates.

What documents do I need to apply for a business line of credit?

Recent business bank statements, typically the last three months, are the core requirement, along with basic business and owner information. Larger lines may also ask for financial statements or tax returns. A photo ID and a voided check may be requested as optional verification items, but they are not upfront requirements for getting a quote.

How fast can I get a business line of credit?

Online and alternative lenders often decide within a day or two of a complete application, with draws landing about a business day later. Bank lines take longer, typically one to several weeks, because the underwriting file is heavier.

Is a business line of credit better than a merchant cash advance?

For repeating, uneven needs, usually yes: you pay interest only on what you draw and you can repay and redraw, while an advance charges a fixed cost on the full amount with fixed daily debits. For a single urgent lump sum repaid quickly from daily revenue, an advance can still be the faster fit.

What happens when the draw period ends?

New draws stop and the remaining balance enters a repayment period, paid down over a set schedule. Some lines renew after a review of your recent financials; calendar the renewal date and keep statements clean in the months before it.