Invest
Underwrite a small rental without getting cute.
Cash flow, leverage, reserves, and downside in one clean pass.
Rent math first
Use Rent Yield to check cash flow, leverage, and downside before the story gets too optimistic.
Use assumptions you can defend
Vacancy, repairs, taxes, and PM drag matter more than clever output labels.
Know the downside
A thin spread on the front end becomes a rough hold later.
Real estate 101 calculators
Tiny inputs. Useful answers.
Fast screens for investors, landlords, tenants, and lenders. Each result shows the formula so the math stays inspectable.
InvestorsLandlords
1% rule
Check rent against purchase price in one number.
Monthly rent / price0.87%
Formula1% rule check = monthly rent / purchase price
This is a rough rent-to-price screen, not a full underwriting rule.
- High-tax, high-insurance, HOA-heavy, or repair-heavy properties can fail even when this screen looks good.