Lease Year Gap Recovery Calculator

Partial years require prorated CAM recovery by days or months.

Full annual CAM

Active days in year

Total days in year

Prorated recovery

$59,178

Proration factor

0.493%

Daily CAM

$328.77

How the math works

Factor = active days / total days. Prorated = full annual × factor.

180 / 365 = 49.3% factor. $120k × 49.3% = $59.2k prorated recovery. Daily = $328.

How to Use

Enter full annual CAM for tenant.
Enter active days in year.
Enter total days in year.
Read prorated recovery.

Frequently Asked Questions

Commencement vs termination?

Commencement: tenant begins mid-year, owes CAM from rent commencement date. Termination: tenant exits mid-year, owes CAM through last day. Proration typically by days (365-day basis) for accuracy; some leases use 30-day months for simplicity.

What's included in proration?

Fixed CAM (annual flat amount): prorate directly. Variable CAM (actual expenses): recover actual expense × pro-rata share for the partial period. Reconciliation happens within 90 days of year-end.

Typical disputes?

Base year calculation when lease commences mid-year — does year 1 expense count for that partial year or the first full year? Holdover periods — does tenant owe holdover CAM at full or partial rate? Spell out in lease; standard language ranges widely.