Rental Property Cash Flow Calculator
Estimate monthly and annual cash flow, NOI, vacancy, and debt coverage.
Open Calculator →Free real estate analysis tools
Real Estate Investor Calculators
Screen rental, renovation, financing, and resale scenarios with 17 practical calculators, including 12 interactive tools with formula guides.
Choose a calculator
Analyze the Deal From Multiple Angles
Start with preliminary estimates, then confirm every material assumption before making an offer or financing decision.
Cap Rate and Rental ROI Calculator
Compare NOI, cap rate, cash-on-cash return and rental performance. Includes formulas.
Open Calculator →Cash-on-Cash Return Calculator
Compare annual pre-tax cash flow with the cash invested in the property.
Open Calculator →DSCR Loan Calculator
Check rent coverage and test lender payment requirements. Includes formulas.
Open Calculator →BRRRR Calculator
Estimate refinance proceeds, equity and cash remaining in a rental. Includes formulas.
Open Calculator →Fix-and-Flip Profit Calculator
Estimate total project cost, selling costs, potential profit, and return on cost.
Open Calculator →Maximum Allowable Offer Calculator
Estimate a flip offer from resale value, costs and target profit. Includes formulas.
Open Calculator →Rehab Budget Calculator
Organize major renovation categories and add a contingency reserve.
Open Calculator →Mortgage and Amortization Calculator
Estimate payments, amortization and the effect of extra payments. Includes formulas.
Open Calculator →FHA vs. Conventional Loan Calculator
Compare payments, cash needed and mortgage insurance. Includes formulas.
Open Calculator →Home Affordability Calculator
Explore a home price based on income, debts and housing costs. Includes formulas.
Open Calculator →Rent vs. Buy Calculator
Compare ownership equity with renting and investing the difference. Includes formulas.
Open Calculator →Refinance Calculator
Compare a new loan with keeping the current mortgage. Includes formulas.
Open Calculator →Closing Cost Calculator
Estimate transaction fees, prepaids and cash to close. Includes formulas.
Open Calculator →HELOC Calculator
Estimate equity borrowing capacity and draw-period or repayment payments. Includes formulas.
Open Calculator →Rental Property Depreciation Calculator
Estimate residential building depreciation and a partial first year. Includes formulas.
Open Calculator →Sober Living Investment Calculator
Compare buying, leasing, or renting to an operator. Model bed revenue, staffing, startup costs, cash flow, break-even occupancy, and five-year projections.
Open Calculator →Use tools together
A Calculator Is a Screening Tool—not Due Diligence
One number cannot describe an investment. Cap rate excludes financing, cash-on-cash return depends on leverage and cash invested, DSCR depends on how net operating income is calculated, and renovation or resale projections depend on physical condition and market evidence.
Use several calculators to test the same property. Save your assumptions, compare conservative and expected cases, and review the results with qualified lenders, inspectors, contractors, attorneys, accountants, insurance professionals, and other advisers.
Learn locally
Take the Numbers to a Boston REIA Event
Meet local investors and professionals, ask better questions, and develop a more complete property analysis.
Boston REIA resource network
Continue Your Research
Connect this topic with the next step in your investing research, analysis, due diligence, or deal review.
Organize due diligence
Investor Checklists
Use practical checklists before making commitments.Explore Resource →See the process
Sample Case Studies
Walk through clearly labeled hypothetical investment scenarios.Explore Resource →Compare funding
Financing Guides
Review investor loan types and financing structures.Explore Resource →Continue Your Investment Research
Connect the numbers to the actual location, strategy, and property condition. These guides provide the next research steps.