A commission accrual is the expense a company books for commission that has been earned but is not yet paid. It records the cost in the period the selling happened and carries a matching liability on the balance sheet until payroll settles it, which keeps the expense next to the revenue that produced it.
Finance closes March in the first week of April. The March commission run is rarely final by then: deals are still being validated, a dispute is open, and the quarterly accelerator cannot be settled until someone confirms the last few orders. Waiting is not an option. So the ledger carries an estimate, the best available figure for what March earned, booked as an expense in March with a liability alongside it. April's payroll then reduces the liability and leaves the expense line alone. Whatever the estimate got wrong is corrected later, in the period someone notices.
The estimate is where the work is, and three things make it harder than a month's calculated payouts. Retroactive tiers and quarterly accelerators mean a month's rate depends on how the quarter finishes, so month one of a quarter accrues at a rate nobody can yet confirm. Deals that close inside the period but reach the system after the close date have to be estimated from pipeline rather than counted. And a plan with clawbacks carries a further judgement, because commission on deals that will predictably reverse inside the retention window is an expense the company does not ultimately bear. Companies with enough history estimate that reversal rate and accrue net of it; companies without it accrue gross and take the credit later. Both are defensible, the method has to be consistent, and the choice sits with whoever signs off the accounts rather than with the commission system.
Finance closes March on the fifth working day of April. The March commission run is calculated but not yet approved, and the quarter's accelerator will not be settled until the end of Q2.
If the quarter finishes and the accelerator settles at $19,500 instead, the $4,500 difference reverses in the period the true figure lands. That reversal is an accrual correction and has nothing to do with what any rep is paid.
The accrual is booked, the payment is made, and nobody checks that the second cleared the first. Over a year of estimates the liability account fills with small residues: an accrual released against the wrong month, a payment that landed partly against an older balance, a true-up expensed twice because the original accrual was never reversed. Each one is immaterial and the running total is not. The discipline is unremarkable and it is the whole job: every accrual carries the period it belongs to, every payment names the accrual it settles, and the liability balance is walked line by line at least once a quarter.
Commish pays commission accrual the way your plan describes it, shows the arithmetic on every line, and traces each payment back to the deal that earned it.