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 nine practical Boston REIA calculators.
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 Calculator
Calculate net operating income, capitalization rate, and value at a target cap rate.
Open Calculator →Cash-on-Cash Return Calculator
Compare annual pre-tax cash flow with the cash invested in the property.
Open Calculator →DSCR Calculator
Estimate debt-service coverage and the maximum payment at a target DSCR.
Open Calculator →BRRRR Calculator
Estimate project basis, refinance proceeds, equity, and cash left in the deal.
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
Use an adjustable ARV rule to estimate a preliminary maximum property offer.
Open Calculator →Rehab Budget Calculator
Organize major renovation categories and add a contingency reserve.
Open Calculator →Mortgage and Amortization Calculator
Estimate principal-and-interest payments, annual debt service, and total interest.
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 →Browse the library
Investor Guides
Start with the complete Boston REIA learning center.Explore Resource →Request a review