A business line of credit works by giving your company a preset borrowing limit that you can draw from at any time, repay, and then borrow against again — you only pay interest on the amount you actually use, not the full limit. Instead of receiving a single lump sum like a term loan, you access funds in pieces (called draws) whenever a need arises, whether that is covering payroll during a slow month, buying inventory ahead of a busy season, or bridging a gap while you wait on customer invoices. As you pay down the balance, that credit becomes available to use again, which is why a line of credit is described as "revolving." It is one of the most flexible financing tools a small business can hold, and it is designed to be there before you need it rather than applied for in a crisis.
Key takeaways
- You pay interest only on the amount you draw, not on your full credit limit.
- Repaid principal replenishes your available credit, so you can borrow against the line again without reapplying.
- Lines can be secured by an asset (higher limits, lower rates) or unsecured (faster, smaller limits, usually with a personal guarantee).
- Products in this category generally start around a $10,000 minimum and scale with revenue and collateral.
- Options exist for FICO scores of 500 and above, though stronger credit earns better pricing.
- Online lenders can approve a line within 24 to 48 hours once documentation is submitted.
- A line of credit is best for recurring or unpredictable working-capital needs, while a term loan usually prices better for a single large purchase.
The Revolving Mechanics: Draw, Repay, Reuse
The defining feature of a business line of credit is that it revolves. When you are approved, the lender assigns a credit limit — the maximum total you can have outstanding at one time. From there, the cycle is simple: you draw funds, you repay them, and the repaid amount is added back to your available credit for future use.
Suppose you hold a $50,000 line. If you draw $15,000 to buy inventory, you have $35,000 still available. When you repay $10,000 of that draw, your available credit rises to $45,000. You never re-apply to access those funds again — the line stays open and ready for the duration of its term. This is fundamentally different from a term loan, where the money arrives once and the account closes when the balance is paid.
Because interest accrues only on the outstanding balance, a line you open but do not draw against typically costs little or nothing to hold, aside from any maintenance or draw fees. That makes it a practical standby tool: many owners open a line while their finances are strong so the capacity is in place for the moment a real need appears.
| Action | Amount | Outstanding Balance | Available Credit |
|---|---|---|---|
| Approved limit | — | $0 | $50,000 |
| Draw for inventory | $15,000 | $15,000 | $35,000 |
| Draw for payroll | $8,000 | $23,000 | $27,000 |
| Repayment | $10,000 | $13,000 | $37,000 |
Figures above are a simplified example for illustration only.
Secured vs. Unsecured Lines of Credit
Lines of credit fall into two broad categories based on whether collateral backs them. Understanding the difference helps you anticipate what a lender will ask for and what terms to expect.
A secured line of credit is backed by a specific business asset — commonly accounts receivable, inventory, equipment, or in some cases a certificate of deposit or real estate. Because the lender has an asset to claim if the balance goes unpaid, secured lines usually carry higher limits, lower interest rates, and more forgiving qualification standards. The trade-off is that the pledged asset is at risk and the paperwork tends to be heavier.
An unsecured line of credit requires no specific collateral. Approval leans more heavily on your business's revenue history, time in operation, and the owner's personal credit. These lines are faster to open and carry no asset pledge, but they typically come with smaller limits and higher rates to offset the lender's added risk. Note that "unsecured" rarely means no strings attached — most lenders still require a personal guarantee, meaning the owner is personally responsible for repayment even though no single asset is named as collateral.
How Interest and Fees Are Calculated
The cost of a line of credit has two moving parts: interest on what you borrow and fees for holding or using the line. Because you only pay interest on the drawn balance, the effective cost depends heavily on how much you use and how quickly you repay.
Interest usually accrues daily or monthly on the outstanding balance and is billed periodically. Rates may be fixed but are more often variable, tied to a benchmark such as the prime rate plus a margin. Beyond interest, common fees include:
- Draw fees — a small flat fee or percentage charged each time you pull funds.
- Maintenance or monthly fees — a charge for keeping the line open, sometimes waived if you draw a minimum amount.
- Origination fees — a one-time charge when the line is first opened.
- Renewal fees — charged when the line comes up for its periodic review and renewal.
The example below shows how the same $20,000 need can cost very different amounts depending on repayment speed. Interest is illustrative and rounded.
| Scenario | Amount Drawn | Repaid Over | Approx. Interest Cost |
|---|---|---|---|
| Fast payback | $20,000 | 2 months | ~$400 |
| Moderate payback | $20,000 | 6 months | ~$1,200 |
| Slow payback | $20,000 | 12 months | ~$2,400 |
For example only; assumes a mid-range rate and a declining balance. Actual costs depend on your rate, fee structure, and payment timing.
Qualifying for a Business Line of Credit
Lenders evaluate a line of credit much like any other financing, but because the balance revolves, they pay close attention to whether your cash flow can support ongoing draws and repayments. The core factors are time in business, revenue, and credit profile.
Traditional banks tend to want at least two years of operating history, strong annual revenue, and solid personal and business credit. Online and alternative lenders are generally more flexible — some work with businesses that have six months to a year of history and lower credit scores, in exchange for higher rates or smaller limits. Across the market, FICO scores of 500 and above can find options, though better scores unlock better pricing.
Documentation typically requested includes recent business bank statements, tax returns, financial statements, and sometimes an accounts-receivable aging report for secured lines. Approvals can be quick — often within 24 to 48 hours with online lenders once your documents are in — while bank lines can take considerably longer. Products in this category generally start around a $10,000 minimum and scale up with your revenue and collateral. No responsible lender can promise approval, and any offer that is "guaranteed" regardless of your finances should be treated with caution.
Line of Credit vs. Term Loan vs. Credit Card
A line of credit sits between a term loan and a business credit card, borrowing useful traits from each. A term loan delivers a fixed lump sum repaid on a set schedule — ideal for a single, defined purchase like buying a vehicle or funding a build-out. A business credit card also revolves, but it is built for smaller everyday purchases and often carries higher rates on carried balances, while offering rewards and purchase protections a line of credit does not.
The line of credit's strength is flexibility for recurring or unpredictable working-capital needs: you decide when and how much to draw, you pay for only what you use, and the capacity refreshes as you repay. The comparison below summarizes the practical differences.
| Feature | Line of Credit | Term Loan | Business Credit Card |
|---|---|---|---|
| Funds delivered | Draw as needed | One lump sum | Charge as needed |
| Revolving? | Yes | No | Yes |
| Interest on | Amount drawn | Full principal | Carried balance |
| Best for | Working capital, cash-flow gaps | Large one-time purchases | Everyday small purchases |
| Typical cost | Moderate | Lower for large amounts | Higher on balances |
General comparison; specific terms vary by lender and borrower.
When a Line of Credit Makes Sense
A line of credit is best matched to needs that are recurring, timing-driven, or hard to predict — situations where a lump sum would be either too much or poorly timed. Common uses include:
- Smoothing seasonal cash flow — covering operating costs during slow months and repaying when revenue returns.
- Bridging receivables — paying suppliers or staff while waiting on customer invoices to clear.
- Buying inventory ahead of demand — stocking up before a busy season without draining your reserves.
- Handling unexpected expenses — an equipment repair, an emergency, or a short-notice opportunity.
It is a weaker fit for a single large, fixed purchase with a long payback horizon — a term loan usually prices better there — or for a business that would draw the line to the limit and struggle to pay it back down, since a line that stays maxed out defeats its revolving purpose and can strain cash flow. The most effective owners treat a line of credit as a managed reserve: opened while the business is healthy, drawn deliberately, and repaid promptly so the capacity is always ready for the next need.
Frequently asked questions
Do I pay interest on the full credit limit or only what I use?
Only on what you actually draw. If you hold a $50,000 line but have only drawn $10,000, interest accrues on the $10,000 outstanding balance. The unused portion sits available at no interest cost, though some lenders charge a small maintenance or draw fee separate from interest.
How is a line of credit different from a term loan?
A term loan gives you a single lump sum that you repay on a fixed schedule, and the account closes when it is paid off. A line of credit is revolving: you draw funds as needed, pay interest only on the drawn amount, and the credit refreshes as you repay so you can borrow against it again without reapplying.
What credit score do I need to qualify?
It varies by lender. Banks generally want strong personal and business credit, while online and alternative lenders are more flexible — options exist for FICO scores of 500 and above. A higher score typically earns a larger limit and a lower rate, but score is only one factor alongside revenue and time in business.
How fast can I get approved and access funds?
With online lenders, approval can come within 24 to 48 hours once your bank statements and other documents are submitted, and draws are often available shortly after. Traditional bank lines can take longer to underwrite. No lender can honestly guarantee approval regardless of your finances.
Does a business line of credit require collateral?
Not always. Secured lines are backed by an asset such as receivables, inventory, or equipment and tend to offer higher limits and lower rates. Unsecured lines require no specific asset but usually carry smaller limits and higher rates. Even unsecured lines commonly require a personal guarantee from the owner.
What happens to my available credit as I repay?
It replenishes. Every dollar you repay toward principal is added back to your available credit and can be drawn again. This is what makes the line revolving — as long as the line stays open and in good standing, the capacity resets as you pay down your balance.
