Business

Business Loan Calculator

Estimate business-loan payment, total cost, effective APR, and debt-service coverage.

● Runs locally in your browserReviewed June 21, 2026

Enter your assumptions

Currency changes the display symbol only; formulas are currency-neutral.
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What this calculator helps you do

Estimate payment, borrowing cost, APR, and a simplified monthly debt-service coverage ratio for a business loan. The calculation runs entirely in your browser; SENNA Finance does not receive the values entered into this tool.

Worked example

Example assumptions

Using the default example—business loan amount of $100,000, annual interest rate of 10.5%, term of 60 months, origination fees of $2,500, monthly cash available for debt service of $4,500—the calculator returns monthly loan payment of $2,149.39; estimated apr: 11.60%; total interest: $28,963.40. Change the assumptions to match your own case rather than relying on the example.

Formula and calculation basis

Standard amortizing payment plus fee-adjusted APR and DSCR.

Inputs are converted to the periodic units required by the formula. Results are calculated with full JavaScript numeric precision and rounded only for display.

How to interpret the result

Use DSCR as an initial stress check only. Businesses should test lower cash flow and higher costs before relying on the base scenario.

Common mistakes to avoid

  • Using revenue instead of cash available for debt service.
  • Ignoring seasonal cash-flow variation.
  • Comparing payment alone without fees and total cost.

Limits and assumptions

The DSCR is a simplified monthly ratio and not a lender-specific underwriting calculation.

Outputs are estimates, not contractual quotations, regulated disclosures, tax advice, investment advice, or a substitute for professional review.

Frequently asked questions

What cash flow should I enter?

Use a conservative estimate of monthly cash available to service this debt, not gross sales.

What does DSCR mean?

It compares entered monthly cash flow with the modeled monthly payment.

Are fees included in APR?

Yes, the educational APR estimate uses loan proceeds after the entered fees.

Sources and reference context

Independent educational referencesU.S. Small Business Administration — business planning guidance ↗SENNA Finance calculation methodology

External references provide educational context and do not imply endorsement of SENNA Finance.

Review record

Prepared and technically reviewed by Subash Gupta

Formula engine v1.1.0. Last reviewed June 21, 2026. The reviewer is a financial-systems and technology practitioner, not a licensed financial adviser. Report suspected errors through the correction channel.