If your small business regularly deals with uneven cash flow, seasonal swings, or unexpected expenses, a business line of credit is often a smarter fit than a traditional term loan. Unlike a lump-sum loan, a line of credit gives you ongoing, flexible access to funds — and you only pay for what you actually use. This guide explains exactly what it is, how it works, and how to use one strategically.
What Is a Business Line of Credit?
A business line of credit is a revolving pool of funds that a lender makes available to your business, up to a set credit limit. You can draw from it whenever you need cash, repay what you’ve drawn, and then draw again — much like a business credit card, but typically with lower interest rates and higher credit limits.
The key difference from a term loan: you’re not borrowing the full amount upfront. You only pay interest on the portion of the credit line you’ve actually used, not the entire approved limit.
How Does a Business Line of Credit Work, Step by Step?
1. Application and Underwriting
You apply with a lender (bank, credit union, or online lender), providing business financials, bank statements, and credit information. The lender evaluates your business’s revenue, credit score, and time in business to determine your credit limit and interest rate.
2. Credit Line Is Established
Once approved, you’re given access to a credit line — for example, $50,000 — that you can draw from at any time, without reapplying.
3. You Draw Funds as Needed
You withdraw only what you need, when you need it — say, $10,000 to cover a seasonal inventory purchase — leaving the remaining $40,000 available.
4. You Repay What You’ve Drawn
You make payments (often monthly) on the amount you’ve drawn, covering principal and interest. Some lenders offer interest-only payment options during the draw period.
5. The Credit Becomes Available Again
As you repay the drawn amount, that portion of your credit limit becomes available again — this is what makes it “revolving,” as opposed to a term loan, which is used once and closed out.
Business Line of Credit: A Simple Example
Imagine your business is approved for a $40,000 line of credit. In March, you draw $8,000 to cover a slow month’s payroll. Over the following two months, you repay that $8,000 plus interest. By May, your full $40,000 is available again — with no need to reapply, unlike a term loan.
Secured vs. Unsecured Business Lines of Credit
- Secured line of credit: backed by collateral (inventory, equipment, accounts receivable). Typically offers higher limits and lower interest rates.
- Unsecured line of credit: no specific collateral required, though a personal guarantee is still common. Usually comes with lower limits and higher rates to offset the lender’s added risk.
Typical Rates and Credit Limits
| Lender Type | Typical Credit Limit | Typical Rate Range |
|---|---|---|
| Traditional bank | $10,000–$1 million | 7%–19% |
| Online lender | $1,000–$250,000 | 10%–60%+ (effective) |
| SBA CAPLines | Up to $5 million | Prime + 2%–4.75% |
Rates vary significantly based on your business’s credit profile, revenue, and whether the line is secured or unsecured.
What Can You Use a Business Line of Credit For?
- Covering payroll during a slow sales month
- Purchasing inventory ahead of a busy season
- Bridging the gap between invoicing and getting paid
- Handling unexpected repairs or emergency expenses
- Taking advantage of a time-sensitive opportunity (bulk discount from a supplier, for example)
A line of credit is generally not the best tool for large, one-time investments like buying real estate or major equipment — a term loan or SBA 504 loan is usually more cost-effective for those. See our guide on [term loan vs. line of credit: which one should you choose] for a full comparison.
Fees to Watch Out For
Beyond the interest rate, business lines of credit often come with additional fees:
- Draw fee: charged each time you withdraw funds
- Maintenance/annual fee: charged simply for keeping the line open, whether or not you use it
- Origination fee: a one-time fee when the line is first established
- Learn more about the true ongoing cost in our guide on [how much it costs to maintain a business line of credit].
Pros and Cons
Pros
- Pay interest only on what you actually use, not the full credit limit.
- Reusable — no need to reapply every time you need funds.
- Fast access to cash once the line is established, often within a day or two.
- Helps smooth out cash flow without over-borrowing.
Cons
- Interest rates can be higher than a term loan, especially for unsecured lines.
- Some lenders charge maintenance fees even when the line isn’t in use.
- Credit limits may be lower than what you’d qualify for with a term loan.
- Revolving debt can be easy to over-rely on if not managed carefully.
Frequently Asked Questions
How is a business line of credit different from a business credit card? Both are revolving credit, but lines of credit typically offer higher limits, lower interest rates, and the ability to withdraw cash directly, whereas credit cards are generally better suited for smaller, recurring purchases. See our comparison in [business credit cards: best options].
Can a startup get a business line of credit? It’s possible, though most traditional lenders prefer at least 6–12 months of operating history. Newer businesses often have better luck with online lenders — see our guide on [business lines of credit for startups with no credit history].
Do I have to use the full credit line I’m approved for? No. You only draw what you need, and you only pay interest on the amount actually drawn — unused credit typically doesn’t accrue interest, though some lenders charge a maintenance fee regardless of usage.
Conclusion
A business line of credit is one of the most flexible financing tools available to small businesses, particularly for managing cash flow and handling unpredictable expenses. Before applying, compare rates and fees across a few lenders, and make sure a revolving credit line — rather than a term loan — is really the right fit for your specific need. For the full requirements involved, see our guide on [requirements to open a business line of credit].