Short answer: Update the shipping assumptions in your shortlist, then compare complete quotes for your actual order mix. A holiday price change alone does not establish which carrier or fulfillment partner fits your business.
If you are choosing a 3PL before the holiday rush, it is tempting to ask one question: “Who has the cheapest shipping?” A more useful question is: “Who can show the cost and service outcome for the orders we need to send?”
That puts a price update in its proper place—as evidence for the decision, rather than the decision itself.
We checked the newer status, not just the announcement
USPS's August 25 announcement described a temporary adjustment affecting Priority Mail Express, Priority Mail, USPS Ground Advantage, and Parcel Select, subject to regulatory review. Postal Explorer now marks the time-limited price files and Notice 123 Final, revised September 18, for the October 4, 2026–January 17, 2027 window. Use the current files to establish the applicable price. USPS announcement; final price-file index.
This article addresses that holiday adjustment. It does not treat the change as a universal fuel percentage or quote one amount for every parcel.
Send each candidate the same shipment brief
Choose a sample from your own expected orders. Include destination, packed dimensions, weight, required service, and expected shipping period. If a field is unknown, say so and ask the provider what evidence it needs.
Keep the customer requirement visible. A lower quote that changes the delivery promise or excludes part of your destination mix is a different proposal.
Ask each candidate to return a total with carrier charges, seasonal treatment, and warehouse fees identified. If the quote is bundled, ask what can change during the quoted period.
Do not compare surcharge lines in isolation
Illustrative comparison, not actual carrier pricing: Imagine two eligible options for the same shipment and customer requirement.
| Assumed option | Transportation before seasonal amount | Seasonal amount | Combined amount |
|---|---|---|---|
| A | $5.20 | $0.60 | $5.80 |
| B | $5.70 | $0.20 | $5.90 |
Option B has the smaller seasonal line but the larger combined amount. These invented figures illustrate the comparison method; they describe no USPS service or named provider. Other applicable fees would still need to be included.
The same discipline applies to fuel, packaging, and fulfillment work. Keep the full scope equal before comparing totals.
Check whether the alternative is operationally ready
If a provider proposes a different carrier mix, ask it to demonstrate the workflow before assigning holiday volume. Check the service mapping, label generation, tracking updates, exception handling, and customer-support process for that option.
Also ask who authorizes changes. A routing rule should reflect your requirements, not quietly trade a customer commitment for a lower label price.
For an existing partner, a controlled test may answer the question without a warehouse move. For a new provider, include the test in onboarding and record what remains unproven.
Match the decision to the size of the problem
If your current operation is working and the price exposure is manageable, first review the carrier options and packaging already available. If the quotes reveal a persistent mismatch with your order profile, expand the shortlist using that evidence.
Do not let one temporary change crowd out receiving reliability, inventory control, returns, and support. Those requirements remain part of the match even when shipping prices dominate the conversation.
Bring a defined shipment file and a clear customer promise. You will get a more useful answer than asking a provider to win on a headline rate.
Build your brief
Research note
Official sources checked September 23, 2026. Our status check found newer final files than the original conditional announcement. We did not audit every price cell, negotiated rate, or provider contract. The comparison example and shortlist framework are original editorial analysis. Recheck the final files before obtaining quotes.