USPS Network Overhaul Cut Costs as Service Declined, Audit Finds

A U.S. Postal Service inspector general audit found that the agency’s network overhaul reduced major operating costs but did not materially improve its overall financial position. The review also found that network changes and revised service standards coincided with nationwide declines in service performance, with rural communities experiencing the most significant effects.

The report, issued September 8, 2026, examined USPS network processing, transportation and delivery initiatives from fiscal year 2016 through the second quarter of fiscal year 2026. Much of the review focused on changes made under the Postal Service’s 10-year Delivering for America plan, which began in 2021.

USPS reduced transportation and work-hour costs

The Postal Service reduced overall transportation expenses by about $755 million over the period examined, according to the Office of Inspector General. The audit separately identified about $2 billion in lower mail-processing and delivery work-hour costs.

The $755 million figure is a nominal reduction. The report also calculated inflation-adjusted transportation savings of about $3 billion. That figure should not be combined with the separate $2 billion reduction in mail-processing and delivery work-hour costs.

Those savings, however, did not translate into a material improvement in USPS’s overall financial position. Postal Service management said the agency’s finances would have been worse without the changes, but the OIG found that the overall financial position had not improved compared with when the initiatives began.

Service effects were nationwide and uneven

The audit said network changes and revised service standards coincided with declines in nationwide service performance. It did not conclude that the overhaul alone caused every service decline. Instead, it identified specific ways that facility changes, transportation adjustments, planning problems and operational bottlenecks contributed to delays and other service risks.

Rural communities experienced the most significant effects. When fully implemented, the Regional Transportation Optimization initiative is expected to affect 86% of rural populations, compared with 45% of urban populations. The initiative covers 72% of ZIP Codes in the contiguous United States and 48% of the population, according to the report.

The OIG also found that customers near regional processing and distribution centers generally experienced faster service than customers in areas affected by the transportation changes. That uneven impact could make service appear less equitable for communities farther from major postal hubs.

USPS has also changed its formal delivery standards. In fiscal year 2022, it extended the First-Class Mail and package delivery window from one to three days to as many as five days. In fiscal year 2025, it added another day for some offices affected by Regional Transportation Optimization and adjusted travel-time standards between processing facilities.

Planning and measurement gaps limited oversight

The inspector general found that USPS did not establish a long-term cost-savings target, maintain comprehensive financial tracking for network-change initiatives or create an overall schedule and timeline for the transformation. The original Delivering for America plan projected $22 billion to $31 billion in savings through specific initiatives, but the Postal Service later removed those savings and budget goals from its updated plan and shifted toward annual budgeting.

The report also identified weaknesses in planning, modeling, facility standardization and technology. Inaccurate assumptions and insufficient planning contributed to bottlenecks, delays and avoidable costs, while inconsistent facilities and systems made it harder to measure performance across the network.

As of March 2026, USPS had launched 14 of 60 planned regional processing and distribution centers and 73 of 190 planned local processing centers. The incomplete rollout means the network remains in transition and that additional operational changes are still ahead.

What USPS agreed to do next

USPS agreed with all five recommendations in the audit. That agreement does not mean the recommendations have been completed. Target corrective-action dates run from November 30, 2026, through July 31, 2027, and the OIG must review supporting evidence before recommendations can be closed.

The recommendation involving improved modeling practices remains only partially responsive. The OIG said USPS must provide evidence of the models in use and show how they have improved network planning and implementation before that recommendation can be closed.

Postmaster General David Steiner has separately said that recent service performance, work-hour reductions and network operations were improving. USPS has also issued statements about election-mail handling as the 2026 midterm cycle approaches. The inspector general’s audit was not a finding that ballots were mishandled.

For people sending election-related, medical, financial or business mail, the practical lesson is to allow additional time and use tracking or other documented mailing options when appropriate. The next important checkpoints will be USPS’s corrective-action deadlines and the OIG’s later verification of whether the agency improves delivery, planning, financial measurement and network oversight.

Sources

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