Business Loan Calculator
Measure monthly debt service and total interest for any business loan and determine the return on capital your business needs to make the financing worthwhile.
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Enter your values above to see the results.
Tips & Notes
- ✓Calculate the return on capital before applying — a loan only creates value if what it finances generates more than its cost; model this before approaching any lender.
- ✓SBA loans offer the best rates and longest terms for qualifying small businesses — the application is involved but worth it for loans over $50,000.
- ✓Match the loan term to the useful life of what you are financing — financing a 3-year asset over 7 years means paying for something you no longer have.
- ✓Your personal credit score matters significantly for business loans under $1 million — improving it before applying is one of the highest-leverage pre-application actions.
- ✓Compare total interest, not just rate, across business loan offers — a slightly higher rate on a shorter term often costs less total than a lower rate extended over more years.
- ✓Keep your debt service coverage ratio above 1.25 — most lenders require net operating income of at least 1.25x annual debt service as a condition of approval.
Common Mistakes
- ✗Taking a business loan to cover operating losses rather than to invest in growth — debt does not fix a broken business model, it accelerates the problem.
- ✗Choosing a long loan term to minimize payment without modeling whether the asset will still be productive and generating returns when the loan is still being repaid.
- ✗Ignoring personal guarantee requirements — most small business loans under $500,000 require the owner to personally guarantee repayment, meaning personal assets are at risk.
- ✗Comparing only interest rates across lenders without including origination fees, annual fees, and prepayment penalties that can add 2-4% to true borrowing cost.
- ✗Using short-term high-rate financing like merchant cash advances for long-term capital needs — effective APRs of 40-100% destroy business economics quickly.
- ✗Not modeling the debt service coverage ratio before applying — a business generating $8,000/month in net income cannot sustainably service $3,000/month in loan payments.
Business Loan Calculator Overview
A business loan calculator shows whether borrowing makes financial sense for your business — not just whether you qualify, but whether the cost of capital is justified by what the loan produces. A $100,000 loan at 9% costs $14,400 in interest over 3 years. If that capital generates $40,000 in additional revenue, the loan creates value. If it covers operating losses, it deepens the problem.
This calculator gives you the payment, total cost, and interest breakdown so you can model whether the return on borrowed capital exceeds its price.
What each field means:
- Loan Amount — the principal being borrowed for business purposes
- Interest Rate — annual rate from the lender; business loan rates vary significantly by loan type and credit strength
- Loan Term — repayment period; SBA loans go to 10-25 years, term loans typically 1-5 years
- Down Payment — some business loans require a borrower contribution, typically 10-30%
What your results mean:
- Monthly Payment — fixed amount required each month; model this against projected revenue
- Loan Amount — what is financed after any down payment
- Total Paid — total cash out over the full term
- Total Interest — the cost of the capital; compare against expected return on investment
- Interest-to-Principal — measure of how front-loaded the interest is
Example — $80,000 equipment loan, 9% rate, 5-year term:
Monthly payment: $1,660 Total paid: $99,600 Total interest: $19,600 (24.5% on top of borrowed amount) Break-even question: does this equipment generate at least $1,660/month in additional revenue or cost savings? Monthly debt service as % of revenue: if monthly revenue is $50,000, this is 3.3% of revenue Rule of thumb: debt service should not exceed 10-15% of gross revenue
EX: $80,000 at 9% — how term changes the payment and total cost 3 years: $2,544/month, total interest $11,584 5 years: $1,660/month, total interest $19,600 7 years: $1,283/month, total interest $27,772 10 years: $1,013/month, total interest $41,560 Match the term to the useful life of the asset being financed.
Monthly payment by loan amount and rate (5-year term):
| Loan Amount | 7% | 9% | 12% |
|---|---|---|---|
| $25,000 | $495 | $519 | $556 |
| $50,000 | $990 | $1,037 | $1,112 |
| $100,000 | $1,980 | $2,076 | $2,225 |
| $250,000 | $4,950 | $5,189 | $5,562 |
Business loan types — typical rates and terms:
| Loan Type | Typical Rate | Max Term |
|---|---|---|
| SBA 7(a) loan | Prime + 2.75-4.75% | 10-25 years |
| Bank term loan | 6-12% | 1-7 years |
| Equipment financing | 5-10% | 3-7 years |
| Online business loan | 10-35% | 1-5 years |
The most important calculation for any business loan is not the monthly payment — it is the return on capital versus the cost of capital. If you borrow $100,000 at 9% to purchase equipment that increases revenue by $3,000 per month, the monthly loan cost is $2,076 and the net benefit is $924 per month. If the equipment adds $1,500 in revenue, the loan destroys value. Model the return before modeling the payment.
Frequently Asked Questions
Requirements vary significantly by loan type. SBA loans through banks typically require a personal credit score of 680 or above. Traditional bank term loans usually require 680-720. Online business lenders often approve scores of 600-650 at substantially higher rates. Equipment financing uses the asset as collateral and sometimes approves lower scores. The business credit profile — years in operation, revenue, profitability, and existing debt — matters alongside personal credit for loans above $100,000. New businesses under 2 years old face significantly more limited options regardless of credit score.
Small Business Administration loans are government-guaranteed loans issued by approved private lenders. The SBA guarantees 75-85% of the loan, reducing lender risk and enabling lower rates and longer terms than conventional business loans. The most common is the SBA 7(a) loan, which allows up to $5 million for most business purposes. Rates are capped at prime plus a fixed spread. The application requires extensive documentation including business financials, tax returns, and a business plan. Processing takes 30-90 days. The benefits are significant for qualifying businesses: the best rates and longest terms in small business lending.
Startups — typically defined as businesses under 2 years old — face the most challenging lending environment. Traditional banks and SBA lenders generally require 2+ years of operating history. Options for startups include: SBA microloans up to $50,000 for very early-stage businesses, equipment financing secured by the asset being purchased, business credit cards for smaller amounts, CDFI (Community Development Financial Institution) loans that serve underserved borrowers, and personal loans applied to business use. The practical advice: bootstrap as long as possible, build revenue history, then access bank financing from a position of strength.
Typical documentation includes: 2-3 years of business tax returns, year-to-date profit and loss statement and balance sheet, 3-6 months of business bank statements, business plan (for SBA and new businesses), personal tax returns for all owners above 20%, personal financial statement, business legal documents (articles of incorporation, operating agreement), and a description of loan purpose. SBA loans require additional forms. Having these documents organized before applying significantly speeds the process and signals to lenders that the business is professionally managed.
The debt service coverage ratio (DSCR) is net operating income divided by total annual debt service (all loan payments combined). A DSCR of 1.25 means the business generates $1.25 for every $1.00 of debt payments — the minimum most lenders require. A DSCR below 1.0 means the business cannot cover its existing debt from operations. If your business generates $120,000 in net operating income and carries $80,000 in annual debt payments, your DSCR is 1.50, which is considered healthy. Adding a new loan reduces this ratio — model the new DSCR before applying.
Yes — interest paid on business loans is generally deductible as a business expense against business income, reducing the effective cost of borrowing. Principal repayment is not deductible. If you borrow $100,000 at 9% and pay $9,000 in interest in year one, that $9,000 reduces your taxable business income. For a business paying a 25% effective tax rate, the after-tax cost of the $9,000 interest is only $6,750. This tax benefit means the effective cost of business borrowing is lower than the stated rate — factor this into your return on capital calculations.