How Does a Business Line of Credit Work?
Closer Capitalist·August 24, 2026·Funding Options
A business line of credit works like a reusable pool of approved capital. You get approved for a limit, you draw whatever amount you need against that limit, you pay interest only on the drawn balance, and as you repay it, the limit refills so you can draw again. It is not a lump sum you spend once. It is a standing resource you tap on your own schedule.
That structure is the entire reason a line of credit exists as a separate product from a term loan, and understanding the mechanics is what tells you whether it actually fits your situation.
The three moving parts
1. The limit. Once approved, you have a ceiling, not a deposit. Nothing lands in your account until you draw against it. Bank-issued lines commonly run from roughly $250,000 up to $5 million, while the SBA’s CAPLines program, a revolving line backed by the SBA, also goes up to $5 million with a maximum maturity of 10 years, per the SBA’s own 7(a) loan program page. Alternative and online lenders typically work with smaller limits but move faster on approval.
2. The draw. You pull funds when you need them, in whatever amount fits the need, up to the limit. According to Lendio’s breakdown of how draw periods work, draw periods commonly run 6 to 24 months, and during that window you can draw, repay, and redraw repeatedly, with interest charged only on the amount actually borrowed, not the full approved limit.
3. The repayment. Payments are typically weekly or monthly and cover the drawn balance plus interest. Pay it down and that capacity opens back up. This is the mechanical difference that matters most: an unused $100,000 limit costs you nothing beyond any maintenance fee, while a term loan of the same size starts accruing interest on day one whether you need all of it yet or not.
What it costs, by lender type
Rate ranges vary sharply depending on who is issuing the line, which is worth knowing before you assume one quoted number applies to you.
| Lender type | Typical APR range | Typical limit | Speed |
|---|---|---|---|
| Traditional bank | 7.5% - 17% | $250K - $5M | 1-4 weeks |
| SBA CAPLines | Prime plus a lender margin | Up to $5M | 2-12 weeks |
| Online / alternative lender | 15% - 45%+ | Smaller, faster approval | 24 hours - 1 week |
Data per Biz2Credit’s analysis of Federal Reserve Bank of Kansas City rate data. The spread is wide because a line of credit is priced on risk the same way any revolving product is: a stronger file with cleaner statements and a longer track record lands toward the bottom of whichever row applies.
What underwriters actually check
A line of credit is underwritten differently than a bank looking at a mortgage. According to National Business Capital’s guide to line-of-credit requirements, the standard checklist is:
- Credit score. Many banks want 680-700+. Online and alternative lenders regularly work with scores starting around 600.
- Time in business. Ranges from 1 to 5+ years depending on lender, with newer businesses steered toward the online tier.
- Financial documentation. Recent bank statements, and often tax returns or profit-and-loss statements for larger limits.
- Personal guarantee. Lines under $250,000 commonly require one, meaning you are personally on the hook if the business cannot repay.
Closer Capital’s published baseline lines up with the middle of that range: 600+ credit, 1+ year in business, and $100K+ in annual revenue, reviewed by a person rather than an automated score cutoff alone. If you want to see whether your file clears that bar, you can check what you qualify for with no credit pull required to get a real number instead of a published range.
Why the gap between approved and rejected is wider than people expect
The Federal Reserve’s most recent Small Business Credit Survey data found that only about 37% of firms applied for a loan, line of credit, or merchant cash advance in the prior 12 months, and roughly 48% of U.S. applicants did not receive the full amount they requested, per the Federal Reserve Bank of Chicago’s summary of 2024 Small Business Credit Survey results. That “partial approval” outcome is common enough that it should factor into how you size a request: applying for exactly what you think you need, with clean statements to back it up, tends to land closer to full approval than an inflated ask.
Line of credit vs. the alternative
A line of credit is not automatically the right tool. If you know the exact number you need for one purchase, a lump-sum term loan is usually cheaper and simpler to manage; see our full breakdown in term loan vs. line of credit. A line earns its cost when the need is recurring or the amount is uncertain: seasonal inventory, payroll while invoices are outstanding, or a repair that cannot wait for a multi-week underwriting cycle.
For the full program specs, current rate range, and eligibility bar at Closer Capital specifically, read the business line of credit review.
FAQs
Do I pay interest on the full limit or just what I draw?
Just what you draw. That is the core mechanical difference between a line of credit and a term loan. An approved but untouched limit costs nothing beyond any maintenance or unused-line fee a lender may charge.
Can I draw, repay, and draw again?
Yes. That is the revolving structure. As you repay the drawn balance, that capacity becomes available again for the rest of the draw period, which commonly runs 6 to 24 months before the line is reviewed for renewal.
How fast does a business line of credit fund?
Traditional banks typically take 1 to 4 weeks. Online and alternative lenders can approve within 24 to 72 hours, with drawn funds often moving by ACH within one business day of the draw request once the line is set up.
What credit score do I need for a business line of credit?
Banks commonly want 680-700+. Online and alternative lenders regularly approve starting around 600, provided time in business and revenue support the file. Closer Capital’s stated baseline is 600+ credit, 1+ year in business, and $100K+ in annual revenue.
Is a personal guarantee required?
Usually, for lines under $250,000. That means you are personally liable for the balance if the business cannot repay it, which is standard across most alternative and bank-issued lines at that size.
