Most property managers treat month-end close as a formality — reconcile the bank account, print a P&L, move on. The problem shows up months later, usually at tax time or during a lender review, when a gap that seemed small in March turns into a real headache in December.
Security deposit drift
The most commonly skipped step is reconciling security deposit liability accounts against the actual deposits held per lease. It's easy for this account to drift from reality as tenants move in and out, and by the time someone notices, the fix requires digging through a year of ledger entries instead of one month's.
CAM accrual review
A second common gap is CAM accrual review. If CAM reconciliations only happen annually, the monthly books can carry an accrual balance that no longer reflects actual recoverable expenses — which distorts the property-level P&L every month until the annual true-up happens.
Distribution timing mismatches
The third is owner distribution timing. When distributions are recorded on a cash basis but reported to owners on an accrual basis (or vice versa), the numbers a property manager shows an owner can quietly disagree with what the general ledger says — a mismatch that erodes trust even when nothing is actually wrong.
The fix
A tight month-end close doesn't need to be longer — it needs three extra checks: security deposit liability against lease records, CAM accrual against latest actuals, and distribution basis consistency. Catching drift monthly is a ten-minute review. Catching it annually is a project.