Calculator
Multifamily underwriter
Build a five-year pro forma from the unit mix, occupancy, other income, and operating expenses. Year-by-year GPR, effective income, NOI, reserves, debt service, and cash flow sit next to cap rate, DSCR, cash-on-cash, break-even occupancy, and a five-year IRR.
Financing uses the investor mortgage engine, including interest-only and balloon structures. The working calculator, saved deals, and branded PDF are available after you start a trial.
Estimates only. Not financial, legal, tax, or investment advice. RE Underwrite Lab calculators and PDF reports provide educational estimates based on the numbers you enter. Actual purchase costs, rents, expenses, financing terms, taxes, insurance, vacancy, rehab costs, refinance eligibility, and returns vary by property, market, lender, and local law (including short-term rental rules). We do not guarantee any outcome, profit, cash flow, or appraisal. Some content and tools may be generated or assisted by artificial intelligence and can contain errors. Always verify assumptions with licensed professionals and your own due diligence before making decisions.