Free tool

Business line of credit calculator

A line of credit only costs money on what you draw. Enter a draw amount, rate, and payoff timeline to see the estimated monthly payment and total cost, plus what the same draw costs per month if you pay interest only.

Line of credit draw estimate

$30,000
$1K$250K
20.0%
5%60%
12 months
Estimated monthly payment
$2,779/mo
Principal $30,000 Cost of capital $3,348
Total payback$33,348
Interest-only carrying cost$500/mo
See your real options

Estimate only. Assumes one draw paid down on a fixed schedule; many lines are interest-only until you pay down principal, and some charge draw or maintenance fees that aren't modeled here. Actual rates, fees, and terms depend on the provider and underwriting. Checking your options won't affect your credit score.

How a draw is priced

You pay interest on the outstanding balance, not the full credit limit. Pay a draw down quickly and the cost stays small; carry it interest-only and the balance never shrinks while the meter keeps running. The calculator shows both paths so you can see what carrying a balance actually costs.

  • Interest accrues on the drawn balance only
  • Amortizing payments retire the draw on a schedule
  • Interest-only payments keep the balance, and the cost, in place

Fees that change the real cost

Many lines charge a draw fee (often 1 to 3 percent per draw), a monthly or annual maintenance fee, or both. A line with a lower rate and a draw fee can cost more than a higher-rate line without one on small, frequent draws. Ask for the full fee schedule and model your actual draw pattern before choosing.

When a line beats a term product

A line fits recurring, short cash-flow gaps, payroll timing, inventory buys, seasonal swings, because you reuse it as you pay it down. A one-time, larger need with a defined payoff usually prices better as a term product. Many businesses hold both and use each for what it does best.

Frequently asked questions

Do I pay interest on the whole credit line?

No. Interest accrues only on the amount you've drawn and haven't paid back. An open, unused line typically costs nothing beyond any maintenance fee the provider charges.

Why is my payment different from this estimate?

Many lines bill interest-only minimums, price with weekly payments, or add draw fees this simple amortized model doesn't include. Match the calculator's assumptions to your agreement's actual payment structure.

Important disclosures

  • Subject to underwriting; not all applicants qualify.
  • Costs and available structures vary by product, business profile, state, and provider.
  • Review amount funded, total payback, fees, and all required disclosures before accepting an offer.
  • Licensing, registration, and commercial financing disclosure requirements vary by state and should be confirmed with counsel before launch.

From estimate to real options

See what you may actually qualify for, a quick form that won't affect your credit score.

Check your options