About Rental Math

Rental Math exists to help investors and owner-occupants evaluate property decisions with fewer blind spots.

A common issue is that financing, rent assumptions, maintenance, and risk are often analyzed in disconnected tools.

These calculators estimate mortgage payment, rental ROI, rent-vs-buy cost, BRRRR capital recycling, and house-hack rent offset.

Results are estimates and depend heavily on local taxes, insurance, financing terms, vacancy, and maintenance reality.

Use these numbers as planning baselines and validate deals with local market data and lender terms.

See How these calculators work for methodology and assumptions.