Business Line of Credit: How It Works and How to Qualify

Quick answer: A business line of credit is a revolving credit facility that lets a business borrow up to a set limit, repay, and borrow again. You pay interest only on the amount drawn, not the full limit. It suits short-term needs such as payroll gaps, inventory and waiting on unpaid invoices, rather than long-term purchases.

Most small businesses do not run out of money because they are unprofitable. They run out because cash comes in later than it goes out. A business line of credit is one of the main tools for bridging that gap. This guide explains how a line of credit works, what lenders look for, how much it really costs, and how it compares to term loans, SBA loans and invoice financing, with a worked example.

What is a business line of credit?

A business line of credit (LOC) is an agreement in which a lender approves a maximum amount, the credit limit, that the business can draw on as needed. When you draw funds, your available credit goes down. When you repay, it goes back up. Interest accrues only on the outstanding balance. In that sense it works more like a credit card than a loan, but it is usually accessed by transferring cash to your business bank account.

The key parts of a line of credit are:

• Credit limit: the maximum you can owe at one time.
• Draw period: the time during which you can borrow, often one to five years, or ongoing with an annual renewal.
• Interest rate: usually variable, set as a margin over a benchmark such as the prime rate.
• Repayment terms: interest-only or minimum payments during the draw period, then full repayment over a set period for some lines.
• Fees: origination, annual or maintenance, draw and unused-line fees, depending on the lender.

How does a business line of credit work?

Here is the typical cycle:

1. Apply and get approved for a limit, for example $50,000.
2. Draw funds when you need them, online or by request. You might draw $20,000 to buy stock ahead of a busy season.
3. Pay interest on the $20,000 only. The remaining $30,000 stays available.
4. Repay as customers pay you. Each repayment restores available credit.
5. Borrow again as needed during the draw period, and go through the lender's periodic review to keep the line open.

Secured vs unsecured lines of credit

Type	Collateral	Typical features
Unsecured	No specific collateral, but usually a personal guarantee and a general lien (UCC filing) on business assets	Faster approval, lower limits, higher rates
Secured	Specific assets such as cash deposits, real estate or equipment	Higher limits, lower rates, more paperwork
Asset-based	Accounts receivable and inventory, with a borrowing base recalculated regularly	Limit moves with your receivables; more reporting

What do you need to qualify for a business line of credit?

Requirements vary widely between banks, credit unions, online lenders and SBA programs. The table below shows the kind of criteria lenders commonly look at; the figures are illustrative ranges, not any specific lender's policy.

Factor	Banks and credit unions (illustrative)	Online lenders (illustrative)
Time in business	Often 2 years or more	Often 6 to 12 months or more
Annual revenue	Higher minimums, supported by tax returns	Lower minimums, often checked through bank statements
Personal credit score	Good to excellent	Fair and above may qualify
Documents	Tax returns, financial statements, business plan, debt schedule	Bank statements, ID, basic business details
Speed	Weeks	Days, sometimes the same day

Your business credit score, existing debts and cash flow matter as much as revenue. Lenders want to see that your bank balance and receivables can support repayments. Clean, consistent invoicing helps here: a clear record of who owes you what, and when, makes your cash flow easier to underwrite. Our accounts receivable guide covers how to keep that record.

How much does a business line of credit cost?

The interest rate is only part of the cost. Ask every lender for the full fee schedule and, where available, an annual percentage rate (APR) or total cost estimate. Several US states, including California and New York, require certain commercial financing providers to give cost disclosures.

• Interest: usually variable. Bank lines are often priced as prime plus a margin. Online lines can be much more expensive, and some quote a monthly or weekly fee rather than an annual rate.
• Origination fee: a one-time fee when the line is opened.
• Annual or maintenance fee: charged to keep the line open, whether or not you use it.
• Draw fee: a charge every time you draw funds, common with online lenders.
• Unused line fee: a small percentage of the unused limit, more common on larger bank lines.

Worked example: cost of a line of credit draw

Ana runs a landscaping company with a $50,000 line at a variable rate of 12% APR and a $150 annual fee. In March she draws $20,000 to buy plants and materials for spring contracts. Her customers pay within 90 days, and she repays the full draw on day 90.

Item	Calculation	Amount
Interest on draw	$20,000 x 12% x 90 / 365	$591.78
Annual fee	Flat	$150.00
Total cost	Interest plus fee	$741.78
Interest if drawn the whole limit for a year	$50,000 x 12%	$6,000.00

Because she borrowed only what she needed and repaid quickly, her cost was under $750. If she had taken a $50,000 term loan up front, she would have paid interest on the full amount from day one.

Line of credit vs term loan vs other options

Option	Best for	Repayment	Watch out for
Line of credit	Recurring short-term cash gaps	Flexible, revolving	Variable rates, annual review, fees
Term loan	One-time investments, expansion	Fixed installments	Interest on the full amount
SBA loans	Larger needs at moderate rates	Fixed or revolving (SBA CAPLines)	Paperwork, timeline
Invoice financing	Waiting on slow-paying B2B customers	Repaid when invoices are paid	Fees per invoice, customer notification in factoring
Merchant cash advance	Emergency cash with poor credit	Daily or weekly holdback	Very high effective cost
Business credit card	Small purchases, short float	Monthly minimum	High rates on carried balances

For a deeper comparison, read invoice financing vs line of credit, our guide to SBA loans, and the risks of a merchant cash advance. The U.S. Small Business Administration's loan programs page describes CAPLines, its revolving working capital program.

When does a line of credit make sense?

• Seasonal businesses that buy inventory or hire staff before peak season.
• B2B service firms with net 30 or net 60 terms whose payroll comes before client payments.
• Contractors who buy materials before progress payments arrive.
• Growing businesses whose working capital needs rise with sales.
• A safety net for unexpected repairs or a late-paying major customer, opened while the business is healthy.

A line of credit is a poor fit for covering ongoing losses, because it delays the problem and adds interest. If you draw every month and never get back to zero, look at pricing, costs and collections first. A cash flow forecast shows whether your gaps are temporary or structural.

How to apply for a business line of credit: step by step

1. Work out how much you need. Use your cash flow forecast to estimate the largest gap you expect in the next 12 months, plus a buffer.
2. Check your credit. Review your personal credit reports and business credit files and fix errors.
3. Gather documents. Business and personal tax returns, year-to-date profit and loss and balance sheet, bank statements, an accounts receivable aging report, ID, and formation documents.
4. Compare at least three offers. Your bank or credit union, an SBA lender and an online lender. Compare APR or total cost, fees, draw rules, renewal terms and guarantees.
5. Read the agreement. Note covenants, the review schedule, the variable rate formula, and what happens on default.
6. Draw deliberately. Borrow for specific short-term needs and repay as cash comes in.

How to manage a line of credit once you have it

Getting approved is only the start. How you use the line during the year decides whether it stays cheap and whether the lender renews it.

• Set a purpose rule. Decide in advance what the line is for, for example inventory, payroll timing gaps and urgent repairs, and what it is not for, such as owner draws or long-term purchases.
• Link each draw to a repayment source. When you draw $15,000 to cover payroll while waiting on a client, note which invoices will repay it. When those invoices are paid, repay the draw.
• Aim to clean up the balance. Some lenders expect the balance to return to zero for a period each year (a clean-up or rest period). Even when it is not required, regularly reaching zero shows the line is funding temporary gaps.
• Track the variable rate. If your rate is prime plus a margin, your cost rises when benchmark rates rise. Review the rate each statement.
• Record draws properly. A draw is a liability, not income, and repayments of principal are not expenses. Only the interest and fees are deductible costs. Our journal entries guide shows how to book them.

What lenders review when your line comes up for renewal

Many lines are reviewed once a year. The lender typically asks for updated financial statements and tax returns and looks at how you used the line. Expect questions about revenue trends, profit, existing debt, the balance pattern on the line and whether payments were made on time. A business that drew heavily and never repaid principal may see its limit reduced or the line converted to a term loan. A business that drew, repaid and grew is in a strong position to ask for a higher limit or a lower margin.

Prepare for the review by keeping your books current all year, not just at tax time. A tidy accounts receivable aging report is especially useful for asset-based lines, where your borrowing base depends on how much of your receivables are current. Invoices that are more than 90 days overdue are often excluded from the borrowing base entirely, so slow collections can shrink your available credit at exactly the wrong time.

Common mistakes with business lines of credit

• Applying in a crisis. Lenders approve healthy businesses. Open the line before you need it.
• Using it for long-term assets. Equipment and property are better matched with term financing.
• Ignoring fees. Draw and maintenance fees can make a small line expensive.
• Staying fully drawn. A maxed-out line leaves no cushion and can hurt your credit utilization.
• Weak collections. Borrowing to cover slow customers costs interest. Shorten payment terms and chase overdue invoices first; see our guide to days sales outstanding.

How faster invoicing reduces what you borrow

Every day an invoice sits unpaid is a day you may be paying interest on a line of credit draw. Sending invoices the same day work is finished, stating clear due dates, offering easy payment methods and following up on day one of lateness can cut the size and length of your draws. Many owners find that tightening invoicing reduces their reliance on borrowed money more than any rate negotiation.

A business line of credit works best alongside disciplined billing, and a free invoice generator makes that discipline easy. Create professional invoices in minutes with our free invoice generator: it needs no sign-up and downloads a PDF built in your browser, so you can bill the moment the job is done.