Line of Credit Calculator

What is a Line of Credit?

A line of credit is a flexible loan arrangement that allows businesses or individuals to borrow up to a predetermined limit, repay, and borrow again as needed. Unlike term loans where you receive a lump sum and make fixed payments, lines of credit work more like credit cards - you only pay interest on the amount you actually borrow. This revolving credit structure makes it ideal for managing cash flow fluctuations, covering unexpected expenses, or taking advantage of time-sensitive opportunities without reapplying for financing each time.

How Lines of Credit Work

Once approved for a line of credit with a specific limit (e.g., $100,000), you can draw funds as needed up to that amount. Interest accrues only on your outstanding balance, calculated daily and charged monthly. As you repay principal, that amount becomes available to borrow again. Most lines of credit have draw periods (often 1-5 years) during which you can access funds, followed by repayment periods. Some require interest-only payments during the draw period, while others require minimum payments that include principal reduction.

Understanding Line of Credit Costs

Interest Rates: Typically variable rates based on prime rate plus a margin, ranging from 6-25% depending on creditworthiness and whether it's secured or unsecured.

Draw Fees: Some lenders charge a percentage (0.5-1%) each time you draw funds, though many business lines of credit don't have these fees.

Maintenance Fees: Annual or monthly fees (typically $50-$500) for keeping the line open, even if you don't use it.

Minimum Payments: Usually the greater of a percentage of the balance (1-2%) or interest accrued plus a small principal amount.

Using This Calculator

Enter your approved credit limit, current outstanding balance, annual interest rate, and your planned monthly payment. The calculator shows your monthly interest charge on the current balance, how much of your payment goes toward principal, your remaining available credit, and your credit utilization percentage. Credit utilization is important - keeping it below 30% typically helps maintain good credit scores. Use this tool to model different payment amounts and see how quickly you can pay down balances or to understand the cost of maintaining different balance levels.

Business vs Personal Lines of Credit

Business lines of credit typically have higher limits ($10,000 to $500,000+) and are used for working capital, inventory purchases, or bridging cash flow gaps. They may be secured by business assets or unsecured based on business credit. Personal lines of credit have lower limits ($1,000 to $100,000) and are often tied to home equity (HELOCs) or offered as unsecured products by banks. Business lines usually have more flexible repayment terms, while personal lines may require more structured repayment schedules.

When to Use a Line of Credit

Lines of credit excel for managing unpredictable expenses, seasonal business fluctuations, or opportunities requiring quick access to capital. They're more cost-effective than credit cards for larger amounts and more flexible than term loans for variable needs. Consider a line of credit when you need ongoing access to funds rather than a one-time amount, want to pay interest only on what you use, or need financial flexibility to manage cash flow gaps. However, the revolving nature can lead to long-term debt if not managed carefully, so establish a repayment strategy before drawing funds.