Steps
Use a fixed order: rent, vacancy, operating costs, debt service, reserves. Skip a line and two “identical” deals stop being comparable.
For rental cash flow, Cash Flow is the conceptual map; your spreadsheet is the checklist.
Checks
If totals disagree between you and a counterparty, do not recalculate until you both show line items side by side.
Still stuck? Re-read Related lesson with your numbers in hand, not the example numbers on this page.
Check your numbers now
Worked mini example
Procedure pass: gross rent, minus 8% management, minus taxes and insurance you pay, minus $200 monthly reserve, then P&I. Anything missing?
Two tempos
| Skipped step | Where rental cash flow breaks |
|---|---|
| Jump to headline price or ticker | Miss expenses, fees, or timing on cash flow |
| One-shot math | No sensitivity to rate, rent, or return |
| Trust a screenshot | Stale assumptions versus today’s quote |
Cash Flow: slow checklist, then tool Fast tool, then verify lines
Sensitivity pass
Core lesson
Related: Cash Flow. To test sensitivity, change one input at a time in the calculator.
Use the calculator
FAQ
- Where is the main lesson?
Cash Flow is the hub with related lessons linked from it.
- Which calculator should I open first?
Use Rent vs buy or Home afford for housing tradeoffs; Loan or Amortization for payments and equity.