Finance Guide

Small Business Line of Credit: When to Get One and How It Works

A business line of credit is one of the most useful financial tools available to a small business — and one of the most abused. Used correctly, it smooths out cash flow gaps, funds short-term opportunities, and keeps operations running during slow seasons without touching your personal savings. Used incorrectly, it becomes a debt spiral that compounds the problems it was supposed to solve.

Line of credit vs. term loan vs. business credit card

The simplest decision rule: if you need capital once for a specific purpose (buy equipment, fund an expansion), use a term loan. If you need flexible access to funds for recurring short-term needs, use a line of credit. Use a credit card only for expenses you can pay in full monthly — otherwise the interest rates (often 20–28% APR) make it the most expensive capital available to a small business.

How a business line of credit actually works

A business line of credit is a pre-approved borrowing limit — say, $50,000 — that you can draw from as needed. You pay interest only on what you've actually drawn (not on the full limit), and as you repay, the available credit replenishes.

Example: You have a $50,000 LOC. In March, you draw $20,000 to cover payroll while waiting for a large invoice to be paid. You pay interest on $20,000 — not $50,000. The invoice clears in April, you repay the $20,000, and your full $50,000 is available again. Cost: one month of interest on $20,000, which at a 10% annual rate is about $167. Compared to missing payroll or using a personal credit card at 24% APR, that's a cheap solution to a real problem.

Most business lines of credit are either:

• Unsecured — no collateral required, but higher interest rates and stricter qualification requirements
• Secured — backed by business assets or a personal guarantee, which typically results in lower rates and higher credit limits

What you need to qualify

Requirements vary by lender, but most traditional bank LOCs for small businesses require:

• Time in business: At least 1–2 years. Startups typically don't qualify for bank LOCs — online lenders serve earlier-stage businesses but at much higher rates.
• Annual revenue: Typically $100,000+ in annual revenue, though the threshold varies. Some online lenders will go as low as $50,000.
• Credit score: A business credit score helps, but most small businesses are primarily evaluated on the owner's personal credit score. 640+ is typically the floor for bank products; 700+ gets you better terms.
• Financial documentation: Bank statements (typically 3–6 months), business tax returns (typically 2 years), and sometimes a profit and loss statement. Have these ready before you apply.
• Profitability: Lenders want to see that the business generates enough cash flow to service debt. A business losing money is unlikely to qualify for a traditional LOC regardless of revenue.

Where to get one

• Your business bank: If you have an existing relationship with a bank and a strong account history, this is the best starting point. You'll often get better rates and easier qualification based on the banking relationship.
• SBA lines of credit: The SBA CAPLines program offers several revolving credit options backed by SBA guarantees, which helps qualifying businesses access credit they might not get from a conventional bank. More paperwork, but better terms.
• Online lenders (Bluevine, Fundbox, OnDeck): Faster approval, less documentation, but higher rates — often 15–40% APR vs. 6–12% for bank products. Use these if you can't qualify for a bank product and genuinely need the capital, not as a convenience substitution for a cheaper option you could access with a little more effort.
• Credit unions: Often overlooked for business lending. Credit unions can offer competitive rates and more personalized service for small business members, especially in the $25,000–$100,000 range.

How to use it correctly

A line of credit should function as a bridge, not a foundation. Use it for:

• Covering payroll or operating expenses while waiting for outstanding invoices to be paid
• Purchasing inventory ahead of a known busy season before the revenue has arrived
• Bridging a timing gap on a large project where your expenses come before client payment
• Capturing a short-term opportunity (bulk material discount, urgent equipment need) that will generate clear near-term return

In every case, you should be able to identify specifically when and how the drawn funds will be repaid — usually within 30–90 days from a specific revenue source.

Common misuses that trap small businesses

Using it to cover ongoing operating losses

If your business consistently spends more than it makes and you're using the LOC to make up the difference month after month, the line of credit isn't solving your problem — it's delaying it while adding interest. A line of credit masks a cash flow problem long enough for the problem to grow.

Treating the available balance as profit

Drawing $30,000 from your LOC is not income. It's debt. Business owners who draw from a line of credit and then make decisions — hiring, equipment purchases, owner draws — as if that money is profit often find themselves unable to repay when the LOC comes due.

Never letting it go to zero

A healthy line of credit gets drawn, used for a specific purpose, and repaid. Some banks include a "rest period" requirement — a specified time each year when the balance must go to zero — to ensure the LOC is being used as revolving short-term credit, not as a long-term loan. If your LOC balance never reaches zero, you're either using it wrong or your business has a structural cash flow problem worth diagnosing.

Not comparing the cost of capital

At 10% annual interest, $50,000 drawn for 90 days costs about $1,250 in interest. At 30% (a common online lender rate), that same draw costs $3,750. Always calculate the actual dollar cost of the capital you're drawing, and compare it to the return the use of that capital will generate.