Get the free Lite
Home›Guides

Guides hub

Guides & Calculators

The full method behind both workbooks, published as free guides — every formula with a worked example you can check by hand. New here? Start with the pillar: the cap rate guide walks one rental deal through every number below.

Rental metrics

The individual numbers a rental deal is judged by — what each one measures, how to compute it honestly, and where it misleads.

How to Calculate NOINet operating income — what counts, what doesn't, worked example to $12,432. Cash-on-Cash ReturnFormula, a worked example at −6.4%, and what "good" actually means. DSCR for Rental InvestorsThe ratio your lender checks first — and what a 0.78 does to financing.
Break-Even RentThe rent a deal needs just to survive — and how to use it in negotiation. CapEx ReserveThe expense free calculators skip, modeled as its own line.

Rental how-tos

Complete rental workflows, end to end — screening a deal and running the BRRRR cycle without skipping the refinance math.

How to Analyze a Rental PropertyThe full screening chain, step by step — income, expenses, NOI, financing, verdict. The BRRRR MethodBuy, rehab, rent, refinance, repeat — with the refinance math most guides skip.

Flip metrics

The two offer formulas that decide a flip before it starts — and the honest limits of each.

The 70% RuleFormula, worked example, and when the shortcut lies. Maximum Allowable OfferThe all-in MAO formula beyond the 70% rule.

Flip how-tos

Running a flip on paper before running it with money — analysis, rehab estimating and the budget itself.

How to Analyze a House FlipARV from sold comps to verdict, step by step. Rehab Budget by CategoryThe 14 lines that keep a flip alive, plan vs actual. How to Estimate Rehab CostsA category method you can defend before you buy.

Checklists & comparisons

What to verify before signing, and honest tool comparisons that concede where the other option wins.

Due Diligence Checklist15 points to verify before you sign — printable. Spreadsheet vs Online CalculatorAn honest comparison, by use case. Cap Rate vs Cash-on-CashWhich metric actually decides?

Methodology

How the numbers on this site are produced — published formulas, conservative defaults, and a corrections log anyone can audit.

MethodologyHow our calculators work — and what they don't do.