Calculator
SBA 7(a) loan calculator
For business-acquisition borrowers. Enter your loan amount, rate, and term — see the monthly payment, total interest over the life of the loan, and a year-by-year breakdown of principal versus interest.
Monthly payment
$0
Total interest
$0
Total of payments
$0
Year-by-year breakdown
Principal (filled) vs interest (light) per year. Early years are interest-heavy; the back half is principal-heavy.
Show full amortization schedule
| Year | Principal paid | Interest paid | Balance |
|---|
How this calculator works
We use the standard fully-amortizing loan formula. Each monthly
payment is computed as P × (r(1+r)n) / ((1+r)n − 1),
where P is the principal, r the monthly rate
(annual / 12), and n the term in months. The amortization
applies that payment month-by-month, splitting each into interest
(computed on the remaining balance) and principal (the rest), and
we aggregate by year for the chart and table.
What this tool does not do
- Doesn't include the SBA guaranty fee (typically 0–3.75% of the guaranteed portion, paid at closing). Add it as a closing cost.
- Doesn't model variable-rate adjustments. Most 7(a) loans float on Prime; if rates move, the lender resets your payment.
- Doesn't model balloon structures or seller-financing layers.
- Doesn't compute Debt Service Coverage Ratio (DSCR). DSCR needs your projected post-close EBITDA — that's a separate worksheet.
Source notes
7(a) terms and structure are governed by SBA SOP 50 10. Always verify current eligibility, rate caps, and structural requirements with your lender — rules change.