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Explore your assumptions
Use your own figures. There are no prefilled market rates or valuation multiples.
Complete the inputs to see your scenario.
—The result updates as you change the values.
Calculations stay in your browser. Inputs are not submitted or saved. This tool provides arithmetic, not a valuation, loan quote, clinical staffing plan, or approval.
Key takeaways
- The payment assumes the entered rate stays constant over the modeled amortization.
- Amortization and contractual maturity can differ; a balloon is not modeled.
- An estimated payment does not establish loan eligibility, approval, or total cash required.
What formula is used?
For a positive interest rate, monthly payment equals P × r ÷ [1 − (1 + r)^−n], where P is principal, r is the annual rate divided by 12 and 100, and n is the number of monthly payments. At zero interest, payment equals P ÷ n.
Separate amortization from maturity
A loan may calculate payments on one amortization schedule but mature earlier. That can leave a balloon balance and refinancing risk. This calculator models payments through the entered amortization; it does not calculate a separate balloon date or assume refinancing will be available.
| Entered or omitted item | Treatment |
|---|---|
| Principal | User entered |
| Interest rate | Assumed constant |
| Amortization | Monthly fully amortizing schedule |
| Fees and insurance | Excluded |
| Escrows and reserves | Excluded |
| Balloon or variable-rate changes | Not automatically modeled |
An illustrative example
At arbitrary inputs of $100,000 principal, 6% annual interest, and 30 years of amortization, monthly principal and interest is approximately $600. This is a demonstration of the formula, not an available rate, program term, quote, or eligibility statement.
Review program rules independently
SBA 7(a) has its own maximum loan amount, eligible uses, borrower requirements, and lender process. The applicable SOP and notices depend on the approval date. The site does not infer an equity contribution or seller-note treatment from the payment. (Source: SBA, 2026)
HUD Section 232 is mortgage insurance for eligible residential-care facilities. Its underwriting and costs must be reviewed by an approved lender. A payment that appears affordable does not establish facility or borrower eligibility. (Source: HUD, 2026)
Compare payment with sustainable cash flow
Use earnings after realistic management, rent, operating needs, and necessary investment. Model slower collections and lower service volume. Determine how much cash must remain available after closing in addition to the down payment and fees.
Ask for a complete financing schedule
The lender's proposal should show amount, rate structure, fees, amortization, maturity, insurance, reserves, guarantees, covenants, prepayment terms, and conditions. Use this calculator to check one part of that schedule, not to replace it.
Frequently asked questions
Does the output include SBA fees or HUD mortgage insurance?
No. It estimates principal and interest only. Add program, lender, insurance, escrow, reserve, and closing costs from the actual financing proposal.
Can I enter a zero interest rate?
Yes. At zero interest, principal is divided by the number of monthly payments. The tool still requires a positive principal and amortization period.
Does the calculator check the SBA loan limit?
No. It is program-neutral arithmetic. SBA's 7(a) maximum is a separate program requirement, and other eligibility and project rules apply.
Will the payment remain constant on a variable-rate loan?
Not necessarily. The model assumes a constant rate. Test alternative rates and review the actual adjustment terms, amortization, and maturity with the lender.
Sources
Sources are dated to distinguish current guidance from earlier publications. They support the identified facts; the transaction questions and examples are educational analysis.
- SBA: 7(a) loans (2026). Retrieved September 5, 2026.
- SBA: lender guidance and SOP updates (2026). Retrieved September 5, 2026.
- HUD: Office of Residential Care Facilities (2026). Retrieved September 5, 2026.