Wyden questions changes to postmark rule as tax, election deadlines loom

Sen. Ron Wyden, a Democrat, sent Postmaster General David Steiner a letter Thursday with 11 questions about how the Postal Service is implementing its changes, making Americans aware of them and working with election officials and the Internal Revenue Service to minimize risks that the changes could lead to penalties for late tax filing or disenfranchise voters. 

“Voters in my state of Oregon have for 30 years relied on the USPS to cast their ballots with confidence knowing their votes will be counted in a timely manner,” Wyden wrote. “These network changes and corresponding postmarking delays may jeopardize timely ballot delivery in 2026, disenfranchising voters in Oregon and nationwide.” 

The Postal Service plans to create roughly 60 regional processing and distribution centers, mostly in urban hubs including Portland. When completed, about 23,000 post offices — roughly three-quarters of the country’s total — won’t have end-of-day mail collection.

Instead, mail that arrives at a post office more than 50 miles from a regional center will be picked up the following morning and processed at the regional center, adding at least a day to delivery times. Those changes apply to most of Oregon, including the second- and third-largest cities of Salem and Eugene. 

The shift to regional processing centers and ending evening mail collection means envelopes won’t receive postmarks until they’re processed at the Portland center — so someone mailing a ballot, filing a tax return by mail or who otherwise counts on a postmark as proof a letter was sent by a deadline will have to send their mail earlier or ask for a manual postmark at a post office. 

In a rule finalized on the federal register on Christmas Eve, the Postal Service maintains that a postmark date “does not inherently or necessarily align with the date on which the Postal Service first accepted possession of the mailpiece.” 

“If customers are aware that the postmark date may not align with the date on which the Postal Service first accepted possession of a mailpiece, they will be better equipped to adjust their plans accordingly,” the rule reads. “And if policymakers or other entities that create rules utilizing the postmark date are aware of what the postmark date signifies, they are better equipped to determine whether their rules adequately serve their purposes.”

But, Wyden noted in his letter, federal law explicitly states that the IRS uses postmarks to validate the timeliness of tax returns.

“Slower application of the postmark has direct legal consequences on whether taxpayers’ returns will be considered timely by the IRS,” Wyden wrote. “USPS’s network changes will inevitably delay postmarking for tax returns and may result in late penalties for a significant number of Americans who are unaware of these changes.”

Taxes must be filed by April 15, and Oregon’s primary election is May 19. Because of changes to how the Postal Service handles mail outside of the Portland area, election officials will urge voters to mail their ballots back at least a week prior or use drop boxes instead of relying on timely mail delivery.

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