Business Line of Credit: Complete Guide for Small Business Owners

A business line of credit is the Swiss Army knife of small business funding — useful in a wide range of situations and dangerous when used wrong. Used properly, it smooths cash flow, captures opportunistic deals, and bridges gaps without locking you into a fixed monthly payment. Used poorly, it becomes a long-term debt habit that costs more than a term loan would have. This guide covers the mechanics, the smart use cases, and the traps to avoid.

How a business line of credit works

A line of credit is a pre-approved credit limit you can draw against as needed. Draw $10K, repay it, draw $25K, repay it — same line, multiple uses, no new applications each time. You only pay interest on what you've actually drawn, not the full limit.

Most lines have a draw period (1–2 years) during which you can borrow, followed by a repayment period if there's still a balance, or a renewal at the end. Interest rates are typically variable, indexed to a base rate plus a margin.

When a line of credit is the right tool

Five use cases where a line of credit beats other products:

• Bridging slow-paying receivables. Draw to cover payroll while waiting for a customer payment, repay when the invoice clears.
• Inventory cycles. Draw to fund a buy, sell through, repay, draw for the next cycle.
• Opportunistic purchases. Vendor offers 20% off if you commit this week — line of credit lets you act without scrambling.
• Seasonal expenses. Cover peak-season hiring and inventory, pay down during the off-season.
• Emergency reserve. Even unused, an open line is insurance against an unexpected expense or revenue dip.

When a line of credit is the wrong tool

Don't use a line of credit for:

• Long-term assets. Equipment, real estate, vehicles — match these to term financing or equipment loans where the loan term matches the asset life.
• Permanent working capital. If you draw and never pay down, you're paying line-of-credit rates for what should be a term loan.
• One-time, predictable expenses. A single-purpose advance is often cheaper.

How lines of credit are priced

Variable rate, typically Prime + 2–8% depending on credit, revenue, and time in business. As of 2025, that puts lines of credit roughly in the 10–18% APR range for most small businesses. You may also see a draw fee (1–3% of each draw) and an annual maintenance fee.

Total cost depends entirely on usage. A $100K limit used for 30 days at 12% costs about $1,000 — far less than a term loan of the same amount. Used for a full year, it costs $12,000 — at which point a term loan would have been cheaper.

How to qualify

Lines of credit underwrite somewhere between bank loans and revenue based financing. Typical requirements:

• 1+ year in business (some lenders fund 6+ months)
• $50K+ in monthly revenue for limits above $100K
• FICO 600+ at most direct lenders, 680+ at banks
• 3–6 months of clean bank statements

Spartan Capital offers business lines of credit with same-day approval.

Line of credit vs term loan vs RBF

Quick decision framework:

• Use a line of credit when the cash need is recurring or unpredictable, and you'll draw and repay multiple times.
• Use a term loan for a one-time, fixed-purpose use with a clear repayment timeline (equipment, build-out, expansion).
• Use RBF when revenue is variable and you want repayment to flex with sales.

Many established businesses use all three: a line of credit for ongoing operations, a term loan for major asset purchases, and RBF for opportunistic capital tied to revenue.

How to actually use a line of credit well

Three disciplines:

• Pay it down to zero at least once a year. A perpetually-drawn line is a term loan in disguise — and a more expensive one.
• Track interest cost monthly. If you're paying meaningful interest every month, refinance the balance into a term loan.
• Don't max it out unless you have a defined paydown plan. A $100K line at $95K drawn limits your flexibility for the next opportunity.

A line of credit is one of the most useful products in small business — when matched to recurring cash needs and managed with discipline. Apply with Spartan Capital for a business line of credit up to $500K.