Real Estate Rental Analysis Planner accuracy and testing

Formula source

• Cash flow = effective rent - operating expenses - debt service. Cap rate = annual NOI / purchase price. DSCR = NOI / debt service.

Test cases

Known limitations

• This workflow is a planning aid. Validate assumptions, rates, legal/compliance obligations, vendor quotes, and local policies before acting.

Assumptions

• All values are user-entered planning assumptions.
• Calculations run locally in the browser.
• Saved artifacts are stored only when a signed-in user explicitly saves them.

Unit handling

• Purchase Price accepts values in $.
• Monthly Rent accepts values in $.
• Vacancy accepts values in %.
• Monthly Operating Expenses accepts values in $.
• Monthly Debt Service accepts values in $.
• Rehab / Closing Budget accepts values in $.
• Reserve Months accepts values in mo.
• Monthly Cash Flow is displayed as currency.
• Cap Rate is displayed as a percentage.

Rounding rules

• Number displays use up to 2 decimal places in the calculator UI.
• Currency outputs are displayed with standard US dollar formatting.
• Percent outputs are displayed with two decimal places.
• Input precision follows configured step values where provided.

Version history

Change log