The 2026 USPS rate change cascade
Three separate USPS rate events land in a single year — the January GRI, the April fuel surcharge, and the July DIM divisor change.
2026 is an unusually expensive year for USPS parcels — three separate increases rather than the usual annual GRI. The cumulative impact from January through July represents roughly an 11–16% total rate increase depending on service.
- —Ground Advantage: +7.8%
- —Priority Mail: +6.6%
- —Priority Mail Express: +5.1%
- —+8% on Ground Advantage, Priority Mail, Priority Mail Express, and Parcel Select
- —A fuel/transportation surcharge — first of its kind on USPS packages
- —In effect through midnight Central Time, January 17, 2027
- —Stacks on top of the January GRI
- —DIM divisor reduced: 166 → 139 (packages over 1 cubic foot)
- —All fractional dimensions now round UP to next whole inch
- —Sub-pound tiers consolidated — all under-1-lb packages bill at 12–15.99 oz rate
- —Forever stamp: $0.78 → $0.82
Practical implication: A package that cost $8.50 via Ground Advantage in December 2025 now costs roughly $9.50–$10.50 after both the April surcharge and July structure changes — before accounting for any DIM weight impact from the divisor change.
Covantra applies each rate change as it takes effect, so quoted rates already reflect the current surcharge stack. See current rates
The July divisor change is worth running against your own package sizes. Try the DIM weight calculator → For ways to offset the increase, see cost reduction tips →
Compare all carriers before your next shipment
See USPS, UPS, FedEx, Canada Post, Purolator, and more side by side — with known surcharges and DIM weight calculated before you print.