How should the annual CAM true-up be accrued?

Under accrual accounting, the true-up belongs to the period it covers, not the period the invoice arrives. If the reconciliation covers calendar 2025 and arrives in March 2026, the additional cost should accrue back to December 2025 if the books are still open. If the prior year is closed and the amount is immaterial, the true-up posts to the current period with a memo noting the period it relates to.

How does a true-up affect cash flow?

A true-up is a one-time cash event in the month it is paid, often $5,000 to $30,000 depending on the size of the lease and the variance from estimates. For clients on tight cash management, this lands as an unbudgeted disbursement during the same week as Q1 tax estimates and 1099 reconciliations. The fractional CFO should be reserving for the expected true-up before it arrives.

Should the true-up be in the budget?

A reasonable estimate of the expected true-up should be in the budget if the client's historical pattern suggests one. If the prior three years showed average true-ups of $8,000, $12,000, and $14,000, budgeting $12,000 for the upcoming year is defensible. If the prior years showed refunds or near-zero variances, the budget can assume a smaller reserve.

What is the right client conversation when a material true-up arrives?

The right conversation has three parts. First, here is what the bill says. Second, here is what we have verified so far against the lease (pro-rata share, cap, exclusions). Third, here is what we are doing next, whether that is paying the bill, requesting documentation, or escalating to a formal review. Owners want a recommendation, not just a forwarded invoice.

When does a true-up turn into a CAM review engagement?

When the variance from prior year is more than 10 percent without an obvious driver, when the cap appears to be exceeded, when capital items appear in the pool, or when the client's exposure (across all years still within the audit window) exceeds the cost of a formal review. At that point, the firm's value is in routing the file to a specialist before the audit window closes.

How Annual CAM True-Ups Hit the Books, Cash Flow, and the Client Conversation

The reconciliation arrives the second week of February. By the time it gets routed to the firm, opened, reviewed, and translated into a journal entry and a client conversation, it has consumed three or four hours of professional time across the bookkeeper, the controller, and possibly the firm owner. Multiply that by 15 commercial-tenant clients and the firm has just spent 60 hours on a single annual event. For more context, see what a CAM true-up means for accountants.

That time is well-spent or wasted depending on whether the firm has a playbook. With a playbook, the same event takes 90 minutes per client and produces a client conversation worth charging for. Without one, it takes four hours per client and produces a posted invoice the client never asked about and never thanked the firm for handling.

This article is the playbook. It walks through the journal entry, the cash flow effect, the management report variance commentary, and the client conversation that the annual CAM true-up should generate.

CAM Reconciliation True-Up: The annual settlement entry between the tenant and landlord that reconciles estimated common area maintenance payments made during the year against the tenant''s pro-rata share of actual operating expenses. Settles either as additional rent due (if actuals exceeded estimates) or a refund or credit (if actuals were lower). Lands during Q1 close for most calendar-year leases.

The journal entry, four ways

The right entry depends on materiality, period status, and whether the firm is on accrual or cash basis.

Scenario 1: Accrual basis, prior period still open, material variance. The reconciliation covers 2025 and arrives in February 2026 while December 2025 is still open. Best practice is to accrue back to the period covered.

12/31/2025
Dr. Occupancy Expense - CAM       $18,000
   Cr. Accrued CAM Reconciliation        $18,000

02/15/2026
Dr. Accrued CAM Reconciliation     $18,000
   Cr. Cash                              $18,000

The 2025 P&L now reflects the actual cost of occupancy for the period, not just the estimates that were paid during the year. The 2026 cash impact is reflected in February without distorting 2026 P&L.

Scenario 2: Accrual basis, prior period closed, immaterial. The 2025 books closed January 31, 2026. The true-up is $4,200, immaterial. Post to current period with a memo.

02/15/2026
Dr. Occupancy Expense - CAM        $4,200
   Cr. Cash                               $4,200
Memo: 2025 CAM Reconciliation Settlement

Scenario 3: Accrual basis, prior period closed, material. The 2025 books closed and the true-up is $24,000. The amount is material and the prior period cannot be reopened. Post as a prior-period adjustment to retained earnings if the firm''s policy requires it, or post to current period with disclosure in the management report commentary.

Scenario 4: Cash basis. Post when paid. The true-up hits the period the cash leaves the account, regardless of which lease year the bill covers.

For most small-business clients on QuickBooks Online or Xero with straightforward operations, scenarios 1 and 2 are the common ones. Scenario 3 happens occasionally and should trigger a conversation with the client and the tax preparer about the right treatment.

Cash flow planning before the bill arrives

The true-up is predictable as a category event even when the dollar amount is variable. Three or four years of reconciliation history gives the controller enough pattern data to reserve appropriately.

A 13-week cash forecast for a commercial-tenant client should always include a true-up reserve line for the months when reconciliations historically arrive. If the lease year is calendar, the line shows in February through April. If the lease year is fiscal (some retail leases run February-to-January or March-to-February), adjust accordingly.

Reserve sizing:

If prior 3 years averaged $8,000 net true-up, reserve $10,000 for the coming year
If prior years showed material variance ($5,000 to $25,000), use the higher end
If prior years showed net refunds, reserve $0 but flag the lease for a review (refunds are uncommon enough that consistent refunds suggest something is being calculated favorably to the tenant that may not last)

The fractional CFO conversation in November is straightforward: "We are reserving $12,000 for the 2025 CAM true-up which we expect in February. That reservation is in the November forecast you are looking at."

When the bill arrives at $18,000 instead of $12,000, the firm is the partner who saw most of it coming. When the bill arrives at $42,000 because the cap was ignored or capital items were included, the firm is the partner who flagged the overcharge before the client paid it.

The variance commentary that matters

When the true-up posts, the management report for the period it affects should include commentary that goes beyond "occupancy expense up." Useful structure:

CAM expense for the year totaled $44,200, compared to estimates of $26,200 paid during the year. The $18,000 reconciliation reflects a 9 percent year-over-year increase in the building's CAM pool, driven primarily by elevated snow removal costs and a property management fee increase. The reconciliation is being reviewed against the lease cap provision before final payment.

That paragraph tells the owner four things:

What was paid (estimates) and what was reconciled (actuals)
The size of the variance
What drove the variance at the building level
What the firm is doing with the bill before paying

The fourth point is the differentiator. The firm is not just posting the bill. It is reviewing it.

"The clients who renew their engagement at higher fees are the ones who experienced the firm catching a CAM overcharge. It happens once and the relationship changes permanently. The firm stops being the team that codes the bill and becomes the team that protects the client''s cash." — CAMAudit field notes after testing reconciliation samples from published audit cases

The client conversation in three parts

When the true-up is over $10,000 or represents a material increase, the controller or fractional CFO sends an email or schedules a 15-minute call. The conversation has three parts.

Part 1: What the bill says. "The 2025 CAM reconciliation arrived from the landlord. The pool was $612,400 for the year, your share is 4.0 percent, so your allocation is $24,496. You paid $16,696 in monthly estimates, leaving a true-up of $7,800."

Part 2: What we have verified so far. "We confirmed the pro-rata share matches the lease. The year-over-year increase is 9 percent, which is within the 5 percent cap if the cap applies only to controllable expenses, but we are requesting the breakdown from the landlord to confirm. We have not yet seen the line-item detail of the CAM pool."

Part 3: What happens next. "We are holding the bill in a clearing account pending the line-item detail. If the breakdown comes back clean, we will release the payment within five business days. If the line items show capital improvements or excluded categories, we will let you know what the corrected number should be and walk you through the dispute options."

That conversation takes 90 seconds to deliver. It justifies the firm's fee in a way that monthly bookkeeping never does.

When the true-up turns into a review engagement

Some true-ups are not just bookkeeping events. Spot the red flag, preserve the document, escalate when it moves beyond bookkeeping review. Cross the line into a formal CAM review when:

The variance from prior year is more than 10 percent without an explained driver
The cap appears exceeded after a quick test
Capital items appear in the supporting detail
The pro-rata share on the statement does not match the lease
The client''s cumulative exposure across all unreviewed years exceeds the cost of a formal review

At that point the firm has two choices. Perform the review in-house if the firm has the lease interpretation skill and the time, or refer the file to a specialist who can perform the review on a contingent or fixed-fee basis. Either choice produces a better outcome than paying the bill and moving on.

Closing the loop

After the true-up is resolved (paid, disputed, or recovered), three things should happen:

The lease abstract gets updated with the new estimated payment amounts the landlord will collect during the upcoming year
The close calendar gets a reminder for next year''s reconciliation, dated 60 days after lease year-end
The variance commentary in the management report references the resolution so the owner remembers what happened

That documentation discipline is what turns one true-up event into a repeatable annual workflow. By the third year, the firm is processing reconciliations in 60 minutes per client with a clear audit trail and a confident client conversation. The economics of taking on commercial-tenant clients shift permanently once the playbook is in place.

The annual CAM true-up is the moment when bookkeeping work either looks like data entry or looks like finance partnership. The difference is whether the firm has decided in advance how to handle it.

How Annual CAM True-Ups Hit the Books, Cash Flow, and the Client Conversation