How the rental property refinance calculator works
The new monthly payment uses the entered loan amount, fixed annual rate, and amortization period. It is a principal-and-interest calculation. Compare it with an old payment measured on the same basis so a change in escrow or other charges is not mistaken for financing savings.
The model does not retrieve current rates or decide which loan amount a property supports. Use terms from a lender scenario and check property value, LTV, debt coverage, reserves, credit, seasoning, and documentation separately.
Calculate cash out after debt and closing costs
Net closing proceeds equal the new loan amount minus the current balance and entered closing costs. A positive amount appears as cash out; a negative amount appears separately as cash required at closing. The two results cannot be positive at the same time.
Closing costs are deducted from proceeds in this model. If costs are paid from other cash, rolled into a differently stated loan amount, or combined with points and reserves, adjust the inputs to match the actual funding statement and avoid subtracting the same charge twice. A zero cash-out result does not conceal a modeled shortfall.
Interpret monthly savings and break-even months
Monthly savings equals the current payment minus the new modeled payment. A negative number is a payment increase, not savings. The result can reflect both a different rate and a reset amortization period, so it does not by itself show the lifetime cost of the new debt.
Break-even months equals closing costs divided by monthly savings only when savings are positive. If the new payment is equal or higher, the break-even result is unavailable. A cash-out objective may still be modeled, but it should not be described as a payment-savings case.
Connect refinance proceeds to rental coverage
A refinance changes both equity and annual debt service. Transfer the new payment to the rental-property analysis, calculate annual debt service, and compare it with stabilized NOI and cash flow. Use the DSCR calculator when the lender or your analysis requires an explicit coverage ratio.
For a BRRRR project, the refinance page provides payment and cash-out detail while the BRRRR calculator connects rehab cost, ARV, debt payoff, cash left in the deal, and post-refinance operations. Keep the same loan amount and operating assumptions across both pages.
Compare term, rate, and hold-period scenarios
Run proposed terms with the same loan amount first, then change one variable at a time. A longer amortization can reduce the payment while slowing principal reduction, and additional cash out can raise the balance even when the rate is lower.
The calculation is not a loan estimate, approval, payoff quote, or tax analysis. Verify accrued interest, prepayment provisions, appraisal and title costs, reserves, escrow, loan covenants, and the expected property hold period before refinancing.
Rental Property Refinance Calculator FAQ
How is the new refinance payment calculated?
It is the fixed-rate amortizing principal-and-interest payment for the new loan amount, annual rate, and amortization period you enter.
How does the calculator estimate cash out?
Cash out is the positive remainder after current balance and closing costs are deducted from the new loan. A negative remainder is shown separately as cash required at closing.
What does a negative monthly savings result mean?
It means the new modeled payment is higher than the current payment. The refinance may release cash, but it is not a monthly-payment savings scenario.
Why is break-even unavailable in some cases?
Closing-cost break-even is calculated only when monthly savings are positive. Equal or higher payments do not recover closing costs through payment savings in this model.
Does this calculator test DSCR or refinance eligibility?
No. It does not apply lender underwriting, property value, LTV, DSCR, reserves, seasoning, or borrower requirements. Use it only to compare terms you enter.
Continue the property analysis
Compare this result with adjacent metrics, keeping each formula’s income, expense, and financing scope consistent.