Employee benefit plan sponsors and administrators are being warned that changes to the United States Post Office postmark process could affect whether mailed government filings and participant disclosures count as timely. Under the new system, a same-day postmark is no longer certain.
That matters because documents sent by mail are generally treated as on time only if they are postmarked on or before the due date. In the past, mail dropped off at a post office or placed in a public mailbox before the final pickup time would usually carry that day’s postmark, but the USPS says changes to its transportation operations could now push the postmark to a later date than the one a local office receives the mail or a carrier picks it up.
The change is aimed at how the postal system handles processing, not at creating a new filing rule for benefit plans. But for sponsors and administrators who still rely on the mail, it changes the practical risk on a day when the tax filing deadline or another due date is close and the postmark itself can decide whether a submission is considered timely.
The friction point is simple: the mailing date and the postmark date may no longer match. USPS postmarks are generally applied by machine at originating processing facilities, so a piece of mail can leave a local post office on time and still be stamped later. That leaves less room for error for anyone depending on the postmark to prove a filing or disclosure was sent before the deadline.
Those who cannot afford that uncertainty have options. Plan sponsors and administrators using U.S. mail can visit a USPS retail location and request a manual postmark at the counter free of charge. They can also buy a certificate of mailing or use certified or registered mail services, both of which provide proof of timely mailing. For anyone whose paperwork is governed by a due date, the message is clear: mailing is still allowed, but proof matters more now than it did before.
