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  1. Home
  2. /Resources
  3. /CAM Line Items
  4. /Property Taxes (Pro-Rata)

Property Taxes (Pro-Rata): CAM Line Item Audit Guide

Angel Campa, FounderCAMAudit
Last updated: April 2026

Tenant's pro-rata share of real property taxes and assessments levied on the building and land.

In this article

  1. Key Takeaways
  2. What Property Taxes (Pro-Rata) Covers
  3. How Landlords Overcharge on Property Taxes (Pro-Rata)
  4. How to Spot Property Taxes (Pro-Rata) Overcharges
  5. Legitimate vs. Suspicious Charges
  6. How to Dispute Property Taxes (Pro-Rata) CAM Charges
  7. Frequently Asked Questions

Key Takeaways

  • ✓Request a copy of the actual tax bill every year to verify the billed amount matches the municipal assessment
  • ✓Penalty interest on late tax payments is the landlord's responsibility and should never appear in the CAM pool
  • ✓If the landlord wins a tax appeal, the resulting refund must be credited back to tenants proportionally
  • ✓Watch for special assessments for improvements that benefit only the landlord, not the tenants
  • ✓Verify the pro-rata share calculation method matches your lease, including whether the denominator is total building SF or only occupied SF

Recoverability & Controllability by Lease Type

Lease TypeRecoverable?Controllable?
NNN✓ Yes✗ No
Modified Gross✓ Yes✗ No
Full-Service Gross✗ No✗ No

Approximate budget share: 25-40% of total CAM pool.

What Property Taxes (Pro-Rata) Covers

Property taxes represent one of the largest single line items in most NNN CAM reconciliations, often accounting for 25-40% of total billed expenses. Tenants pay their pro-rata share of real property taxes and assessments levied on the building and land. The correct charge is straightforward in principle: the municipal tax assessment divided by total leasable SF, multiplied by the tenant's square footage. In practice, four common overcharges appear. First, late payment penalties incurred because the landlord missed a payment deadline are sometimes embedded in the tax line item, even though they are the landlord's financial obligation. Second, franchise taxes, income taxes, or inheritance taxes unrelated to the real property sometimes appear in the tax pool. Third, special assessments for infrastructure improvements that primarily benefit the landlord's future development are passed through as operating taxes. Fourth, and perhaps most impactful, when a building is sold and the property is reassessed at a higher value, tenants in base-year leases may have their tax burden spike. If your lease includes a base year, verify the post-sale reassessment does not exceed the cap. Always request the actual tax bill to reconcile billed amounts against the assessment.

Overcharge Risk

$5,000-$40,000/year

typical annual overcharge when this line item is disputed

How Landlords Overcharge on Property Taxes (Pro-Rata)

Landlords pass through penalty interest on late tax payments, franchise taxes unrelated to the real property, or special assessments for landlord-benefiting improvements.

How to Spot Property Taxes (Pro-Rata) Overcharges

  • ⚑"Interest," "penalty," or "late payment" line items within the tax section
  • ⚑Tax charges that include franchise tax or income tax components
  • ⚑Special assessment charges for improvements that benefit only the landlord
  • ⚑Tax appeals: landlord does not pass savings to tenants but passes overcharges

Legitimate vs. Suspicious Property Taxes (Pro-Rata) Charges

Legitimate ChargeSuspicious Charge
✓Real property tax assessment billed pro-rata based on tenant SF over total leasable SF✗Penalty interest or late payment fees embedded within the tax line item
✓Tax amount consistent with the municipal assessment on file✗Tax charge significantly higher than prior years without a documented reassessment
✓Tax refund from a successful appeal credited back to tenants pro-rata✗Landlord retains tax appeal savings without passing them through to tenants
✓Only real property taxes and standard improvement district assessments✗Franchise tax, income tax, or estate tax included in the CAM tax pool

How to Dispute Property Taxes (Pro-Rata) CAM Charges

Request a copy of the actual tax bill. Verify charges match the municipal tax assessment and exclude penalty interest (landlord's responsibility), franchise taxes, and special assessments benefiting only the landlord. If the landlord wins a tax appeal, any refund must reduce your pass-through proportionally.

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From the Founder

“After testing reconciliation samples from published audit cases through CAMAudit, post-sale reassessment overcharges are the single largest dollar-value finding we surface for tenants in base-year leases, sometimes exceeding the entire rest of the audit combined.”

Angel Campa, Founder of CAMAudit

Related Guides

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Automotive Dealership CAM Overcharges: Pro-Rata Audit Guide
CAM OverchargesGuide
Pro-Rata Denominator Errors That Inflate Every CAM Charge
IndustriesGuide
Industrial CAM Costs: Low Per-SF but High Pro-Rata Risk
CAM OverchargesGuide
Pro-Rata Share Errors: The Denominator That Costs Thousands

Explore Related Resources

Detection RuleGross Lease ChargesDetection RulePro-Rata Share ErrorLease ClausePro-Rata Share Definition ClauseLease ClauseBase Year Stop ClauseScenarioMy pro-rata share calculation doesn't match my lease termsScenarioHow to verify my pro-rata share is calculated correctly

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Related Resources

GlossaryCAM GlossaryGlossaryControllable ExpensesResourcesCAM Audit by StateToolsFree CAM Audit Tools

Frequently asked questions

Sources

  1. 1.BOMA International: Experience Exchange Report
  2. 2.NAIOP: Property Tax Implications in Net Leases
  3. 3.ICSC: CAM Expense Reconciliation Guide

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Need to extract lease terms before your audit?

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This page provides general educational information. It is not legal advice and may not reflect the most current law in your state. Consult a licensed attorney for advice specific to your situation.