Small Business Loan Calculator: Total Cost of Borrowing for Your Business

Business borrowing costs vary enormously depending on the loan type, your credit profile, how long you've been in business, and your revenue. An SBA 7(a) loan offers the best rates and longest terms for qualified borrowers, but takes 30-90 days to close. A merchant cash advance offers same-week funding but at effective rates that can exceed 80% APR.

Knowing the differences — and the real cost of each — is fundamental to making sound financing decisions.

Types of Small Business Loans

SBA 7(a) loans: The most common SBA loan. Maximum amount: $5 million. Terms up to 25 years for real estate, 10 years for equipment, 7 years for working capital. Rates are tied to the prime rate with add-ons (currently 10.50-13.00% in 2026). Requires SBA approval plus an approved lender. Strong collateral and 2+ years in business typically required.

SBA 504 loans: For major fixed assets (real estate, large equipment). Structured as two loans: one from a bank (50% of project), one from a Certified Development Company backed by the SBA (40%), and 10% down from borrower. Rates on the CDC portion are fixed at below-market rates (currently ~6-7%). Best for businesses buying their premises.

Conventional term loans: Bank or credit union loans without SBA guarantee. Faster to close, less paperwork. Rates typically 8-15% for qualified small businesses. Terms 3-7 years. Usually require strong financials and 2+ years in business.

Business lines of credit: Revolving credit you draw on as needed and repay. Great for working capital and seasonal cash flow. Rates: 9-20% depending on creditworthiness. Best for businesses with cyclical cash needs, not for long-term capital investments.

Equipment financing: Secured by the equipment purchased. Rates: 7-15%. Can often finance new businesses with personal guarantees. Terms typically match equipment useful life (3-7 years).

Invoice factoring: Sell your outstanding invoices at a discount (2-5% of invoice value) for immediate cash. High effective cost but provides liquidity without a loan. Useful for B2B businesses with slow-paying customers.

Real Cost: $150K SBA 7(a) Loan at 11%, 7 Years

• Monthly payment: $2,552
• Total payments: $2,552 x 84 months = $214,368
• Total interest: $214,368 - $150,000 = $64,368
• Effective APR: 11% (fixed in this example; SBA rates can be variable)

The SBA guarantee fee adds 2-3.5% of the guaranteed portion upfront (depending on loan size and term). On a $150K loan, that's roughly $3,000-$5,250 added to the loan or paid at closing.

Loan Comparison Table

| Loan Amount | Rate | Term | Monthly Payment | Total Interest | |-------------|------|------|-----------------|----------------| | $50,000 | 11% | 5 yr | $1,087 | $15,220 | | $50,000 | 13% | 5 yr | $1,140 | $18,400 | | $100,000 | 11% | 7 yr | $1,701 | $42,884 | | $100,000 | 13% | 7 yr | $1,773 | $50,732 | | $250,000 | 11% | 10 yr | $3,440 | $162,800 | | $250,000 | 13% | 10 yr | $3,718 | $196,160 |

When Business Debt Makes Sense

The fundamental test: does the return on capital exceed the cost of capital?

If you borrow $100,000 at 11% (annual interest cost roughly $11,000 in year one) and that capital generates $40,000 in additional annual profit, borrowing is clearly worthwhile. If it generates $8,000 in profit, you're losing money on the leverage.

Common productive uses of business debt:

• Equipment that directly generates revenue
• Inventory for a proven seasonal opportunity
• Expansion into a second location with demonstrated demand
• Hiring a key employee before cash flow supports it

Debt to cover ongoing operating losses is a warning sign, not a solution.

SBA Loan Requirements

The SBA 7(a) program has general eligibility criteria:

• For-profit US business
• Owner equity invested (the SBA won't lend to businesses that haven't put in owner capital)
• Other financing not reasonably available on reasonable terms
• Operates for profit in an eligible industry (no gambling, lending, life insurance, lobbying)

Practical lender requirements are often stricter:

• 2+ years in business (some lenders accept 1 year with strong financials)
• 680+ personal credit score (some SBA lenders go lower)
• Positive cash flow with 1.25x+ debt service coverage ratio
• Personal guarantee from all owners with 20%+ ownership

Alternatives for Newer Businesses

Businesses under 2 years old or with limited credit history have fewer options:

• Microloans: SBA Microloan program offers up to $50,000 via non-profit intermediaries. Lower barriers, slower funding.
• CDFI loans: Community Development Financial Institutions serve businesses in underserved markets with more flexible underwriting.
• Revenue-based financing: Repayment tied to a percentage of monthly revenue. Higher cost but self-adjusting payments.
• Business credit cards: 0% intro APR cards can fund short-term working capital needs interest-free if paid within the promotional period.

Run the Numbers

Use the CalcMoney Personal Loan Calculator to calculate exact monthly payments and total interest costs for different loan amounts, rates, and terms before approaching a lender.