Know the deal before you sign the contract.
Run real amortization math on any US rental in under a minute. RealEstateCashGuru grades deals against honest investor benchmarks — no rounding up to make you feel good about a bad number.
Rental Property Worksheet
Loan amount
Principal & interest
Cash flow
Marks reflect commonly cited starting benchmarks used by US buy-and-hold investors (roughly $200+/month per door, 8%+ cash-on-cash, 6%+ cap rate). Treat them as a rule-of-thumb floor to sanity-check a deal, not a guarantee of performance — actual targets vary by metro, asset class, and financing.
Built for people who underwrite deals, not sales pages.
Real amortization math
Every calculator runs the actual loan formula, not a shortcut. Change any input and every downstream number recalculates instantly.
Graded against honest benchmarks
Cash flow, cash-on-cash, and cap rate are each checked against a commonly cited investor benchmark. Grades floor — two out of three passing is a B, not an A.
No log-in, no gated math
Every calculator is fully usable for free. We make money from software affiliate links and lead generation, not from hiding the tools you need.
Rental. BRRRR. Flip. Mortgage. Cash flow. Cap rate. And more.
One suite, one set of benchmarks, no juggling five different tools with five different assumptions baked in.
Open the calculator suiteHow to analyze a rental deal in 15 minutes
A step-by-step walkthrough of the same worksheet above — what each number means, which ones investors fudge, and where the benchmark marks come from.
Read the guideInside the guide
- Reading a seller's numbers without getting sold
- Why vacancy and cap-ex reserves belong in every worksheet
- The three benchmarks a deal has to clear
- Why the calculator floors instead of rounding
Core guides every investor should read first
Selling a house? Get a cash offer from a local investor.
Tell us about the property and we'll route it to vetted local buyers. No showings, no repairs, no listing fees.