The CAM Reconciliation Timeline (And the Deadline That Can Cost You the Year)

Most commercial firms reconcile in Q1 for the prior calendar year. The work compresses into a few weeks, and the deadline that matters most is often the one nobody has read.

The deadline that can cost you the year

Check your leases for a reconciliation delivery deadline.

A meaningful number of commercial leases bar the landlord from billing a reconciliation delivered after a stated date — commonly 90, 120, or 180 days after year end. Some are absolute. Some allow late delivery but waive the tenant obligation to pay.

Missing that deadline can forfeit the entire year recovery for that lease. On a building with $400,000 of recoverable expenses, that is not a process failure — it is a material financial loss, and it happens more often than anyone admits publicly.

Abstract this term for every lease and treat it as a critical date, not a soft target.

A workable schedule

January — close the books

Finalize the prior-year general ledger for the property. Nothing downstream is reliable until expenses are final.

The usual blockers are property tax bills and insurance allocations, which often arrive late. Where a bill has not landed, decide early whether to accrue an estimate or delay — and if you accrue, note it, because it affects the audit trail.

Early February — assemble pools

For each recovery pool:

• Total the actuals
• Identify and itemize exclusions
• Establish the variable portion for gross-up
• Confirm the administrative fee basis

This is also the moment to sanity-check against the prior year. A pool that moved more than about 10% deserves an explanation before it reaches a tenant, because you will be asked.

Mid February — verify lease terms

Before calculating anything, confirm for each lease:

• The share basis and both areas
• Base year or expense stop amount
• Cap rate, reference, and behavior
• Lease-specific exclusions
• Estimates actually billed during the year

Amendments are the usual source of error here. A lease amended in March whose recovery terms changed will produce a wrong reconciliation if the abstract was never updated.

Late February — calculate

Run the reconciliation for each lease. Review outliers before anything goes out: a tenant whose charge moved sharply either has a genuine explanation or a data problem, and finding out which now is much cheaper than finding out from them.

Early March — review and issue

Have someone other than the preparer review a sample. Then issue the reconciliation letters with supporting detail.

March onward — reset estimates

Reset next year monthly estimates from actuals, not from last year estimate. This step is skipped constantly, and skipping it guarantees another large true-up.

What good reconciliation letters contain

• The period covered
• Total pool expenses, with exclusions shown
• The gross-up calculation and occupancy basis
• The tenant share percentage and how it was derived
• The base-year deduction
• The cap test, if one applied
• Estimates billed, itemized by month
• The resulting balance or credit
• The new monthly estimate going forward

Tenants who receive this much detail dispute far less. A one-line “CAM true-up: $3,962” invites a request for backup, which is a slower conversation than simply providing it.

Compressing the timeline

The bottleneck is usually not the arithmetic — it is assembling lease terms and verifying they are current. Firms that reconcile quickly have abstracts that are already accurate.

That is the practical case for keeping the abstract as the operating record rather than reconstructing terms each January.