USPS to Add Variable Fuel Surcharge in 2027
The Postal Service plans to make a fuel-linked fee on domestic packages and mail permanent starting January 2027.
Updated on Nov. 2, 2026 in Inflation
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The U.S. Postal Service plans to permanently add a variable fuel surcharge to domestic packages and mail beginning in January 2027. The move follows a temporary 8% fuel surcharge added in April, which expires January 17, as diesel and gas prices have risen sharply.
Why it matters
USPS says the variable fee is needed because diesel and jet fuel prices are volatile, and it will be calculated weekly as a percentage of the base postage amount. Shippers and households sending packages across the country will see costs tied to fuel markets rather than a fixed rate.
The Postal Service's temporary surcharge is a flat 8%, compared with a 25.5% FedEx ground fuel surcharge and a 26% UPS increase at the time of filing. Future permanent fee levels will depend on weekly EIA fuel prices, and how those levels will track over 2027 has not been projected.
The players
U.S. Postal Service
The independent federal agency responsible for mail delivery across the United States, which operates Ground Advantage, Priority Mail, and Parcel Select services.
FedEx
A major global shipping company that already applies a ground fuel surcharge of 25.5% to its services.
UPS
One of the largest package delivery companies in the world, which raised its shipping prices by 26% when USPS filed its temporary increase.
The details
Starting January 2027, USPS will add the variable fee to domestic packages shipped as Ground Advantage, Priority Mail, Priority Mail Express, and Parcel Select. The fee is calculated weekly from fuel prices listed by the U.S. Energy Information Administration and applied as a percentage of base postage.
Timeline
April 2026: USPS added a flat 8% temporary fuel surcharge.
January 17, 2027: The temporary surcharge expires.
January 2027: The permanent variable fuel surcharge takes effect for domestic packages.
October 1 to December 31, 2026: Holiday peak season, when mail volume typically rises about 40%.
Economic Context
The Postal Service's move mirrors the fuel surcharge structures already used by FedEx and UPS, which apply percentage-based fees tied to diesel costs. USPS would now align its domestic pricing with that model rather than relying on flat temporary increases.
Households and small businesses sending packages through USPS should expect shipping costs to rise and fall with weekly fuel prices rather than staying fixed. Planning for holiday mailing between October and December 2026 may be more costly as volumes spike.
The takeaway
Track diesel prices and compare carrier surcharge rates before shipping large volumes, since variable fuel fees can change week to week. Consider shipping earlier during the holiday peak to avoid higher volumes and costs.
What happens next
USPS will begin applying the permanent variable fuel surcharge to domestic packages and mail in January 2027, after the temporary 8% surcharge expires on January 17.
Further reading
For more on how rising costs ripple through household budgets, explore our Inflation coverage.
Source note: This article includes information reported by Fast Company.
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