Estimate base rent plus separately entered tax, insurance, and maintenance charges.
It keeps income, operating costs, financing, invested cash, value, timing, and exit assumptions explicit so you can reproduce the result and compare genuinely consistent scenarios.
Calculation structure
Keep income, costs, and value in the right period
Annual NNN cost = area × base rent rate + property-tax charge + insurance charge + maintenance charge.
Visual explanation
See what drives the property result
Potential incomevacancy−operating costsCollected incomeKeep capacity and reporting periods consistentAnnual NNN cost = area × base rent rate + property-tax charge + insurance charge + maintenance charge.
Read the result correctly
Use the result with its boundaries
2,000 area units at 25 plus 8,000 tax, 2,000 insurance, and 5,000 maintenance totals 65,000 annually.
Actual NNN definitions, reconciliation, administration, exclusions, and area bases are contract-specific.
Quick guide
How to use this calculator
Enter a single internally consistent property scenario.
Use the field labels to preserve each page's specific investment, transaction, lease, development, or lodging convention.
Review the calculator-specific boundary before interpreting the result.
Calculation method
Calculation method
Annual NNN cost = area × base rent rate + property-tax charge + insurance charge + maintenance charge.
Entered fixed decimals use exact rational arithmetic except the explicitly approximate IRR root. Money rounds only for display and supported nonzero amounts remain visible.
Worked example
Worked example
2,000 area units at 25 plus 8,000 tax, 2,000 insurance, and 5,000 maintenance totals 65,000 annually.
Annual NNN cost = area × base rent rate + property-tax charge + insurance charge + maintenance charge.
Supported inputs
Precision and limits
Visible input limits
Amounts accept up to 30 digits and 12 decimal places and are capped at 1e12 per input. Whole-number periods are capped at the page's stated range; rates are capped at 1000%.
International scope
No currency, tax regime, lease law, lender threshold, local market feed, appraisal, or jurisdiction-specific charge is assumed.
Decision boundary
Results are visitor-entered arithmetic scenarios, not appraisals, forecasts, loan approvals, legal or tax determinations, or investment recommendations.
Calculator-specific assumptions
Actual NNN definitions, reconciliation, administration, exclusions, and area bases are contract-specific.
