UPS Published Its Peak Tiers. Crossing One Reprices Every Package That Week.

UPS published its 2026 demand surcharges on August 26, and the headline rates are modest. Ground Residential and Ground Saver go to 50 cents per package in the shoulder periods, 75 cents from November 22 through December 26.

If you ship more than 20,000 packages in a week, those are not your numbers.

The schedule most large shippers are actually on

Any customer billed for more than 20,000 combined residential and Ground Saver packages in a single week moves off the standard table onto the Higher Volume Shipper tables, where the charge scales with how far your weekly volume rises above your own baseline.

Here is that schedule as published.

Read across the rows before you read down the columns.

The calendar stops mattering above 105 percent

Every tier above the first is the same number in all three periods. A shipper at 130 percent of baseline pays $2.35 per package in late October and $2.35 per package the week before Christmas.

The peak period premium, the step from 50 cents to 75, applies only to shippers at or below their baseline. Everyone else is priced on growth alone.

I have argued before that peak surcharges charge you for shipping more than you usually do rather than for shipping a lot. These tables state it outright.

The part UPS wrote an example for

A footnote carries a sentence UPS clearly expected to be misread, because they worked it out rather than leaving it to inference:

“For example, if the shipper has volume in a week of 175% of the Baseline average weekly volume for UPS Ground Residential, then each UPS Ground Residential package will be assessed a surcharge of $2.65 (not just those over 150% of Baseline average weekly volume for UPS Ground Residential).”

The tier rate applies to every package that week. Not to the overage.

Not a marginal rate. A cliff. Run it against a baseline of 10,000 Ground Residential packages a week.

Two hundred additional packages cost five thousand dollars more. That is twenty-five dollars each on the ones that crossed the line, because the other 14,900 were repriced along with them.

Whatever the intent behind a tiered structure, the effect is that a good week can cost more than a great one, and the shipper who had it will not see why on any report showing cost per package as an average.

Which brings you to the denominator

All of it depends on the baseline, and the baseline is not fixed.

UPS sets it from June, May 31 through June 27. That window is closed. But a second one is open right now:

“If customer’s average weekly volume for the applicable service level from August 30, 2026 through September 26, 2026 is less than 80% of its average weekly volume from May 31, 2026 through June 27, 2026 … then customer’s average weekly volume from August 30, 2026 through September 26, 2026 will be used as the Baseline volume.”

Smaller baseline, larger ratio, higher tier, on every package for the whole week.

So a soft September raises the price of a strong December. That is the opposite of what most people would assume, and the window closes September 26.

If you diversified this year to reduce peak exposure

Many shippers moved volume to regional carriers over the past eighteen months, and cutting peak surcharge exposure was one of the stated reasons. Three things here speak to whether that worked.

Qualification does not reset. The threshold reads “in any week after October 2025,” and once met the surcharges “apply until further notice.” One outsized week last November puts you on this schedule now. Moving volume away in 2026 does not undo a threshold crossed in 2025.

The tier is a ratio, so cutting volume does not move it. Shift 40 percent of your parcels away and, with peak lift unchanged, both halves fall together. A 20,000 baseline peaking at 30,000 is 150 percent. A 12,000 baseline peaking at 18,000 is also 150 percent. Same tier, same rate per package. Less volume exposed to it, which is a real saving, but the rate did not improve.

And it can go the wrong way. If you diversified before the baseline window closed in June, your baseline is set at the reduced level. Volume that comes back to UPS at peak is then measured against that smaller number.

Volume does come back. A shipper whose alternative carrier struggles in late November routes to reliability when it counts, which is exactly when the ratio is most expensive. Take one week of 21,000 UPS Ground Residential packages between November 22 and December 26.

Identical volume. A difference of $39,900, driven entirely by a number set back in June.

And the September window compounds it. If that same diversified shipper runs at 75 percent of June through the August 30 to September 26 measurement period, the baseline resets to 9,000. The same 21,000 week becomes 233 percent of baseline at $3.35 per package, and the week costs $70,350.

None of this argues against diversification. It buys rate leverage and spreads capacity risk, and both are real. What it does not do is remove you from this schedule or lower your tier, and in one pattern, diversifying early then leaning back on UPS at peak, it works against you.

One more mechanic in the same family. Your volume includes volume from affiliated and related accounts, as determined by the carrier. Anyone running multiple entities, or aggregating a book of smaller brands, is measured on the combined number.

What to do before September 26

Find where your September average sits against June. The actual figure by service level, for August 30 through September 26, not an estimate. If it is heading below 80 percent of June, you now know something about your December cost that you would otherwise have learned in January.

I am not suggesting anyone manufacture volume. I am suggesting you know the number before the window closes, because the decision looks different with the ratio in front of you.

Mark your tier boundaries. Work out the package count that puts you at 105, 125 and 150 percent of baseline. Those are the weeks that get expensive, and nobody in your operation is watching for them today.

Check whether last year still classifies you. One outsized week in November 2025 may have put you on a schedule you do not know applies.

If you diversified, model the volume coming back. Not your planned UPS volume. What you would actually tender if an alternative carrier wobbled in the last week of November. That is the number these tables are waiting for.

Takeaway: The published rate is 50 cents. The tier tables run to eight dollars, they reprice every package rather than the overage, and the number that decides which tier you land in is being measured right now, until September 26.

If your volume rose 2 percent in a peak week, would anyone in your operation know it had crossed a tier boundary?