Monthly payroll is the cheapest cycle to administer and the least forgiving to get wrong, because an error waits a month for its correction. It suits salaried workforces and fits hourly ones badly.
The case for monthly is administrative and real
Twelve runs instead of fifty-two, twelve reconciliations, one payroll date that lines up with accounting periods and most benefit billing. For a salaried workforce with stable pay this is straightforwardly efficient and there is little downside. The savings are in everyone's time around payroll, not only in the payroll team's.
Where it hurts is variable pay and new starters
Overtime, shift premiums and commission have to be cut off well before the pay date, so they are usually paid a month in arrears. A new starter can wait weeks for a first payslip. Both are manageable with clear communication and, where needed, an advance, but they are a real cost in workforces where people budget weekly.
Design the cutoff around the variable elements
The month end and the pay date are not the same thing. Decide which days of variable pay are in this run and which roll to next, publish that as a calendar, and keep it stable. Most monthly payroll disputes are not errors at all; they are somebody expecting a shift to be in a run that closed before they worked it.
An error costs a month unless you plan for corrections
Have a written off-cycle policy: what triggers an immediate correction, who approves it, and how it is recovered or reconciled next period. Without one, small errors get held to the next run on the quiet judgement of whoever spotted them, which is exactly the decision an employee should not have made for them.
Questions people ask about monthly payroll
Is monthly payroll legal everywhere?
No. Pay frequency is regulated at state level in the US and some states require more frequent payment for certain workers.
How do we handle a new starter mid-month?
Publish the rule in advance and offer an advance where the wait is long. The complaint is almost always about surprise rather than timing.
When should overtime be paid?
Usually the following month, with the cutoff published. Trying to include the final days rarely survives an approval delay.