cost-calculation
Business Loan Amortization Calculator (2026) — Payment, Interest, Full Schedule
How much will a business loan actually cost? Most online calculators show you a monthly payment and stop there — that's the cheapest of the three numbers that matter. This calculator shows the full picture: monthly payment, total interest over the life of the loan, the period-by-period amortization schedule (so you can see exactly how principal and interest split each month), and a side-by-side comparison against shorter and longer terms so you know what changing the term actually costs in dollars.
Educational estimate based on the inputs you entered — not financial, legal, or tax advice. Verify against your specific situation before acting on this output.
How it works
Methodology
Inputs
- Loan amount
- Principal disbursed. Doesn't model origination fees (most lenders deduct a 1-5% fee from disbursed funds).
- Annual interest rate (%)
- Note rate. Doesn't include origination, packaging, or closing costs — for true cost of capital ask the lender for APR.
- Term (months)
- Loan length. Typical SMB term loans run 12-84 months; SBA 7(a) extends to 25 years for real estate.
- Monthly revenue (verdict only)
- Used only to compute payment burden as % of revenue for the verdict band. Not part of the amortization math.
Formula
Monthly payment = P × r × (1+r)^n / ((1+r)^n − 1) [standard amortizing formula] where P = loan amount, r = annual rate ÷ 12, n = term in months Total payback = monthly payment × n Total interest = total payback − loan amount Per-period: interest = beginning balance × r ; principal = payment − interest ; ending balance = beginning balance − principal Payment burden % = monthly payment ÷ monthly revenue × 100
Assumptions
- Standard fully-amortizing structure — no interest-only ramp, no balloon, no prepayment discount. Some real-estate or SBA structures have 1-6 month interest-only periods at funding; this calculator doesn't model that.
- Constant interest rate over the life of the loan. Variable-rate products (SBA 7(a), most lines of credit) reset periodically — actual payment moves as the index moves.
- Doesn't include origination fees, packaging fees, ACH fees, or closing costs. The interest math is exact; the all-in cost of capital is higher.
- Verdict band thresholds (8% / 15% / 25% of revenue) are screening heuristics based on bank-tier DSCR conventions, not lender-specific underwriting thresholds. The lender decides on file.
- Not an offer, not approval, not a binding pre-qualification. Educational estimator only.
Worked examples
$100K · 60-month working capital loan at 11%
- Loan amount
- $100,000
- Annual rate
- 11.00%
- Term
- 60 months
- Reference revenue
- $40,000/mo
Monthly payment ≈ $2,174. Total interest over life ≈ $30,427. Payment is 5.4% of revenue — comfortable. Shortening to 36 months saves ≈ $13,400 in interest but raises the monthly to ≈ $3,273.
$250K · 84-month equipment loan at 8.5%
- Loan amount
- $250,000
- Annual rate
- 8.50%
- Term
- 84 months
- Reference revenue
- $75,000/mo
Monthly payment ≈ $3,966. Total interest over life ≈ $83,094. Payment is 5.3% of revenue — comfortable. Going to 60 months saves ≈ $25,400 in interest at a higher monthly burden of ≈ $5,131.
$500K · 120-month commercial real estate at 9%
- Loan amount
- $500,000
- Annual rate
- 9.00%
- Term
- 120 months
- Reference revenue
- $60,000/mo
Monthly payment ≈ $6,335. Total interest over life ≈ $260,153. Payment is 10.6% of revenue — manageable bank-tier. SBA 504 or 7(a) at 25 years would meaningfully cut the monthly burden but raise total interest substantially.
Frequently asked
Questions readers ask
How is a business loan monthly payment calculated? +
It uses the standard amortizing-loan formula: Monthly payment = P × r × (1+r)^n / ((1+r)^n − 1), where P is the loan amount, r is the monthly interest rate (annual rate ÷ 12), and n is the term in months. Every fully-amortizing loan — bank term loans, SBA 7(a), conventional commercial — uses this math. Merchant cash advances do not (they use factor rates) — for MCA math see the Factor Rate Calculator.
What's a typical business loan rate in 2026? +
Directional ranges in 2026: bank-tier term loans 6–10%, SBA 7(a) at Prime + 2.25–2.75% (so roughly 9.00%–9.50% at the current 6.75% Prime, per the Federal Reserve H.15 release), non-bank term loans 10–18%, alt-credit and merchant cash advances 18%+ on an APR-equivalent basis. Your actual quoted rate depends on FICO, time-in-business, monthly revenue, deposit history, existing debt, and industry — the lender decides on file. Verify current market rates against the Federal Reserve H.15 daily rate release before quoting yourself.
Should I take a shorter term to save interest, or a longer term for lower payments? +
Both are legitimate, depending on your binding constraint. Shorter term = less total interest, more monthly burden. Longer term = more total interest, less monthly burden. The right answer depends on whether monthly cash flow or total cost of capital is the constraint. The comparison table in this calculator lets you see the dollar trade-off directly — a 60-month term at the same rate typically costs 2-3× the interest of a 24-month term, but cuts the monthly payment by ~60%.
What does the amortization schedule show? +
Period-by-period: how much of each payment goes to principal vs interest, and what the remaining balance is after that payment. Early payments on a fully-amortizing loan are interest-heavy because interest accrues on the full outstanding balance; as the balance drops, more of each payment shifts to principal. By the last 12 months of a 60-month loan, the split typically flips — most of each payment is principal at that point.
What does 'payment as % of revenue' tell me? +
It's a quick burden check. Bank-tier underwriting typically wants the loan payment under 15% of monthly revenue for a healthy SMB — that's the heuristic version of a 1.25× DSCR (debt service coverage ratio). Above 15%, conventional bank lenders start flagging the file; non-bank lenders may still fund but pricing reflects the tighter cushion. Above 25%, even non-bank lenders get cautious. This is a screening number, not the full DSCR — for the precise DSCR math see the DSCR Calculator.
Does this calculator account for origination fees or closing costs? +
No — the calculator shows interest only. Most SMB term loans charge a 1–5% origination fee deducted from disbursed funds (so a $100K loan at 3% origination nets you $97K), plus standard closing costs depending on the product. To compare offers apples-to-apples, ask your lender for the all-in APR including origination — that's the number that includes fees in the cost-of-capital calculation.
Does this work for SBA loans specifically? +
The amortization math is identical for SBA loans, but SBA 7(a) is variable-rate (Prime + spread) and SBA 504 has a three-piece capital stack (bank + CDC + equity). For SBA-specific math including guaranty fees and the 504 stack, use the SBA 7(a) Payment Calculator and SBA 504 Payment Calculator — both are linked below.
Is the quoted rate I see on application what I'll actually get? +
Not necessarily. ClearValue Lending is a funding platform, not a lender — the actual rate is set by the lender on your specific file after underwriting reviews FICO, bank statements, time-in-business, deposit consistency, existing debt, and industry. Pre-qualification estimates narrow the range, but the final rate lands with the term sheet. Use this calculator to pressure-test what a given rate means in dollars — not to predict what your rate will be.
This tool is for educational purposes only and is not financial, legal, or tax advice. Final terms and eligibility depend on lender underwriting; consult a tax professional before acting on tax-tool output. ClearValue Lending is a funding platform.
https://clearvaluelending.com/tools/business-loan-amortization-calculator