Plan them, don't absorb them
Handle the two extra paychecks
On a biweekly schedule, two months a year give you three paychecks. Those extra checks are predictable, not a windfall. Decide in advance what they cover: a sinking fund for a known annual cost, a specific savings goal, or a bill that only arrives once a year. If you do not plan for them, they get absorbed into ordinary spending and the benefit disappears. Naming them ahead of time turns an irregular event into a planned one.
Write it down
Pick the two months now and name what each third check covers. A sinking fund for an annual insurance premium, a set transfer to savings, or a specific one-off cost all work. What matters is that the answer exists before the money arrives.