Accounting Firms
A bookkeeper's lease abstract is shorter than a property manager's. Here are the 14 fields that drive monthly close, accruals, and CAM review.
Add CAM audit to your client services. White-label CAMAudit under your firm brand.
Add CAM advisory to your accounting practiceThe bookkeeper has a question. This month's rent invoice came in $300 higher. Why? Is it a CPI escalation? A CAM estimate change? A tax reset? Or a billing error? CPI escalation means the rent rose with an inflation index. CAM means common area maintenance, the shared costs the landlord passes on. The answer changes the GL coding. It changes the variance note. It decides if you email the client. For more, see how a lease abstract and CAM reconciliation interact.
Without a lease abstract, the answer takes 25 minutes. Open the lease. Find the escalation clause. Find the reset terms. Compare to last month. Decide. Now do that for 30 clients across 12 months. The firm burns 150 hours a year on the same questions.
A finance lease abstract is a one-page sheet. It cuts those questions to 90 seconds. This article covers the 14 fields a bookkeeping or controller-led firm needs in it, and why.
Lease Abstract (Finance Version): A one to three page structured summary of the financial provisions of a commercial lease, designed for use by bookkeeping, AP, and controller teams who post the rent invoice, accrue pass-throughs, and review the annual CAM reconciliation. The finance abstract differs from a property manager''s abstract by emphasizing dollar mechanics (base rent schedule, CAM cap, pro-rata share, expense exclusions, audit rights) rather than operational dates.
This list answers 90 percent of your close-week questions. You never reopen the full lease.
The exact legal name on the lease. It often differs from the DBA the client uses day to day. It matters for AP records, 1099 issuance, and any future dispute.
The exact legal name of the landlord. It is often a single-purpose LLC. The property may sell mid-lease and the landlord entity may change. Your AP record must track which landlord got paid when.
Include the suite number. For multi-location clients, this links the lease to the right location or department in the GL.
The date the rent obligation starts. It can differ from the signing date. It can differ from the move-in date. Use it as the baseline for prepaid rent amortization and the reconciliation period. Amortization means spreading a cost across the months it covers.
The natural end date. It drives the long-term liability schedule under ASC 842 if the client is on accrual basis. That is the accounting rule for putting leases on the books.
The full base rent over the lease term, including step-ups. A 5-year lease often has a different base rent each year. AP needs to know when the invoice should change.
If the lease uses CPI escalations, record the CPI index that applies. Note the base period, the floor, and the cap. If the escalation is a fixed annual percent, record that here too.
The share of building costs the tenant pays. Stated as a percent. Capture the numerator and denominator too. That means the tenant's square footage over the building's square footage. People ignore this field most when it should be updated.
The yearly limit on CAM increases, if any. Note if the cap is cumulative or non-cumulative. Note which costs it covers. That may be controllable only, or the whole pool. If there is no cap, say so. Then no one assumes one exists.
If the lease uses a base year, record the base year and its operating expense amount. The base year sets the cost level you compare against. Pass-throughs bill only the increase over that base, not the full pool.
The costs the lease keeps out of CAM. Common ones are capital improvements, leasing commissions, landlord overhead, and depreciation. The controller checks the reconciliation against this list each year.
The window when the landlord must send the reconciliation statement. Common values are 90, 120, or 180 days after lease year-end. Use it to set the close-calendar reminder.
The window when the tenant can dispute or audit the reconciliation. It is often 60 to 180 days after the statement arrives. It may set notice rules and limit how often you can audit. This deadline decides if a finding can still be pursued.
The current monthly estimates for CAM, taxes, insurance, and other pass-throughs. The landlord updates them each year. AP uses them to check that the rent invoice ties to the lease.
The first abstract on a new client takes about 90 minutes. A senior bookkeeper or controller does it. The steps:
The 90 minutes pay back fast. The next CAM reconciliation arrives. The controller does not re-read 60 pages.
"The single most useful artifact a bookkeeping firm can produce for a commercial-tenant client is a one-page lease abstract that lives next to the lease in the file system. Almost every CAM overcharge I have seen recovered started with someone opening the abstract, noticing a number on the reconciliation that did not match a number on the abstract, and asking the right question on day one instead of day forty." - CAMAudit field notes after testing reconciliation samples from published audit cases
Once the abstract exists, close-week tasks get faster.
Rent invoice review. The bookkeeper pulls the abstract. They compare the invoice lines to fields 6, 7, and 14. Anything off the abstract gets escalated before posting.
Annual reconciliation review. The controller pulls the abstract. They compare the reconciliation statement to fields 8, 9, 10, 11, and 12. A gap triggers the formal review.
Audit-right deadline tracking. The firm sets a yearly task in its system. It checks field 13. It flags any lease where the audit window is closing.
Tax handoff. At year-end, the abstract goes with the trial balance to the tax preparer. Add notes on which pass-throughs were paid and which are in dispute.
Forecasting. The fractional CFO pulls the abstract for a 13-week or annual forecast. Fields 6, 7, and 14 produce the occupancy line.
Spot the red flag. Keep the document. Escalate when it goes past bookkeeping. The abstract is a flag for escalation when:
Each one is a sign of lease admin debt. The firm cannot fix it alone. The right move is simple. Show the gap to the client. Write down what is missing. Decide whether to run a formal review or a separate abstraction project.
The lease abstract is the cheapest, highest-value tool a firm has for any client with a commercial lease. The 90 minutes to build it is the best 90 minutes you spend on that client all year.
