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 affects cash when paid. Plan from the client's past bills and lease. Update the plan when the new CAM bill 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 CAM reconciliation arrives the second week of February. CAM means common area maintenance. This is the landlord's yearly bill. Your team opens it. Someone reviews it. Then someone books the entry and talks to the client. That can eat three or four hours of paid time. The bookkeeper, the controller, and the owner all touch it. Now multiply that by 15 clients with commercial leases. That is 60 hours on one yearly event. For more context, see what a CAM true-up means for accountants.

This article is the playbook. It covers the journal entry. It covers cash flow. It covers what to write in the report. It covers the client talk the true-up should start.

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.

Four ways to book the entry

The right entry depends on three things. Is the amount big enough to matter? Is the prior period still open? Do you use accrual basis or cash basis? Accrual basis puts costs in the year they happened. Cash basis puts them in the year you pay.

Scenario 1: Accrual basis. Prior period still open. Big amount. The bill covers 2025. It arrives in February 2026. December 2025 is still open. The best move is to book it back to the period it covers.

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

Now the 2025 P&L shows the real cost of space. It is not just the estimates paid that year. The cash leaves in February 2026. That stays out of the 2026 P&L.

Scenario 2: Accrual basis. Prior period closed. Small amount. The 2025 books closed January 31, 2026. The true-up is $4,200. That is too small to matter. Post it to the current period. Add 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. Big amount. The 2025 books closed. The true-up is $24,000. That is big, and you cannot reopen the prior period. You have two choices. Book it as a prior-period change to retained earnings if your policy says so. Or post it to the current period and explain it in the report notes.

Scenario 4: Cash basis. Post it when you pay it. The true-up lands in the period the cash leaves. The lease year on the bill does not change that.

Most small-business clients run on QuickBooks Online or Xero. For them, scenarios 1 and 2 come up most. Scenario 3 is rare. When it shows up, talk to the client and the tax preparer. Agree on how to treat it.

Plan the cash before the bill comes

You can count on the true-up as an event. The exact dollars change each year. But the event does not. Three or four years of history is enough. The controller can use it to set aside the right amount.

Build a 13-week cash forecast for each client with a commercial lease. Add a true-up reserve line. Put it in the months the bill tends to arrive. For a calendar lease year, that is February through April. Some retail leases run on a fiscal year. They may run February to January, or March to February. Shift the line to match.

How to size the reserve:

If the last 3 years averaged $8,000, reserve $10,000 for the coming year
If past years swung a lot ($5,000 to $25,000), use the high end
If past years showed refunds, reserve $0. But flag the lease for a review. Refunds are rare. A steady refund may mean the math favors the tenant in a way that will not last.

The talk with the fractional CFO in November is simple. "We set aside $12,000 for the 2025 CAM true-up. We expect it in February. It is already in this forecast."

Say the bill comes in at $18,000, not $12,000. You still saw most of it coming. Say the bill is high because the cap got ignored or capital items slipped in. Then you caught the overcharge before the client paid.

The report note that earns its keep

When the true-up posts, the report note should say more than "occupancy expense up." A cap is a ceiling the lease sets on certain costs. Here is a note that works:

That note tells the owner four things:

What was paid and what the real costs were
How big the gap is
What drove the gap at the building level
What the firm is doing with the bill before paying

The fourth point sets you apart. You are not just posting the bill. You are checking 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 talk in three parts

Is the true-up over $10,000x Is it a big jump? Then the controller or fractional CFO reaches out. Send an email or start a short fit check. The talk has three parts.

Part 2: What we checked so far. "We confirmed your share matches the lease. Costs rose 9 percent from last year. The cap is 5 percent, but it may cover only controllable costs. So we asked the landlord for the breakdown. We have not seen the line items in the pool yet." Controllable costs are the ones the landlord can manage.

Part 3: What happens next. "We are holding the bill in a clearing account. We are waiting on the line-item detail. If it comes back clean, we release payment in five business days. If we see capital projects or excluded costs, we will tell you the right number. Then we will walk you through your options."

That talk takes 90 seconds. It earns the firm's fee. Monthly bookkeeping never does that.

When a true-up turns into a review job

Some true-ups are more than a bookkeeping task. Watch for the red flag. Keep the document. Move it up when it goes past a basic review. Start a full CAM review when:

Costs rose more than 10 percent from last year with no clear reason
A quick test shows the cap looks broken
Capital items show up in the detail
The share on the statement does not match the lease
The client's total risk across all unchecked years beats the cost of a review

Now the firm has two choices. Do the review in-house if you have the lease skill and the time. Or hand the file to a specialist. They can work for a flat fee or a cut of what they recover. Either beats paying the bill and moving on.

Close the loop

Once the true-up is done, three things should happen. Done means paid, disputed, or recovered. A lease abstract is the short summary of the lease terms. Here is the list:

Update the lease abstract with the new estimate the landlord will collect next year
Add a reminder to the close calendar for next year's bill, set 60 days after lease year-end
Note how it ended in the report, so the owner remembers what happened

That habit turns one true-up into a steady yearly routine. By the third year, you handle each bill in 60 minutes. You have a clear trail and a confident client talk. Once the playbook is set, clients with commercial leases pay off in a new way.

The yearly CAM true-up is a fork in the road. The work looks like data entry or it looks like real finance help. The difference is simple. Did the firm decide ahead of time how to handle it?