Full catalog
All rental underwriting calculators
30 tools for cap rate, cash flow, CoC, rules of thumb, and deal checks. Everything runs in your browser.
Returns
Cap rate, CoC, ROI, GRM — what the deal returns on paper.
Cap rate calculator
Capitalization rate from NOI and purchase price.
NOI calculator
Build net operating income from rent, vacancy, and expenses.
Cash on cash return calculator
Cash-on-cash return from annual cash flow and cash invested.
Rental property calculator
Underwrite cap rate, cash flow, and cash-on-cash in one deal sheet.
Gross rent multiplier calculator
GRM from purchase price and gross annual rent.
Rental property ROI calculator
Return on investment from annual profit and cash invested.
Rental property investment calculator
Underwrite cap rate, cash flow, and cash-on-cash for a buy-and-hold.
Rental property analysis calculator
Full deal sheet: NOI, cap, cash flow, and cash-on-cash.
Cash Flow
Monthly and annual cash after vacancy and expenses.
Rental property cash flow calculator
Monthly and annual cash flow after vacancy, expenses, and debt.
Rental yield calculator
Gross and net rental yield from rent, expenses, and price.
Short-term rental income calculator
STR income from ADR and occupancy — no Airbnb API.
Vacancy rate calculator
Vacancy rate from vacant units or days, plus rent dollars lost.
Rental property income calculator
Landlord gross rent to effective income after vacancy.
Rental property profit calculator
Operating profit and cash profit after optional debt service.
Cash flow positive rental calculator
Pass/fail: cash flow after vacancy, OpEx, and the mortgage.
Rules of Thumb
1%, 2%, 50% rule and rent-to-price quick screens.
1 percent rule calculator
Check whether monthly rent clears 1% of purchase price.
Rent to price ratio calculator
Annual rent divided by purchase price — pairs with the 1% rule.
2 percent rule calculator
Stricter rent-to-price screen: monthly rent ≥ 2% of price.
50 percent rule calculator
Rough OpEx ≈ half of gross rent before the mortgage.
Financing
DSCR, leverage vs all-cash, break-even occupancy.
DSCR calculator for rental property
Debt service coverage ratio from NOI and loan payment.
Debt service coverage ratio calculator
DSCR formula: NOI divided by annual debt service.
Cap rate vs cash on cash calculator
Side-by-side cap rate and cash-on-cash on the same deal.
Break-even occupancy calculator
Occupancy needed to cover OpEx and debt for LTR or STR.
Investment property payment calculator
Principal and interest for a rental / investor loan — not a mortgage shop.
Leverage cash on cash calculator
Financed vs all-cash cash-on-cash on the same NOI.
Deal Checks
BRRRR, ARV, flip vs hold, cash-flow positive checks.
BRRRR calculator
Buy, rehab, rent, refinance — cash left in and CoC after refi.
ARV calculator
After-repair value from adjusted comps — no address API.
Rental deal screener
Pass/fail checklist: rent screen, cash flow, and CoC hurdles.
Flip vs rental calculator
Compare fix-and-flip profit to buy-and-hold cash flow and CoC.
Rehab rental return calculator
Rehab cost vs rent lift, cash flow, and return on cash in.