Effective November 2, 2026, Canada Post has tightened its delivery guarantee and increased two surcharges: the «oversized and unpackaged» surcharge has increased from 21 $ to 30 $, and the «out-of-specifications» surcharge has increased from 300 $ to 400 $. These rates apply to items mailed from Monday, November 2, 2026, through Sunday, January 10, 2027. At the same time, the fuel surcharge on domestic packages is 49.00 % according to the published rate for the week of November 2–8, 2026, reduced to 41.60 % thanks to a temporary 15 % reduction. Here’s what Canadian small and medium-sized businesses need to adjust in their pricing this week.

What exactly will change at Canada Post on November 2, 2026?

Canada Post has issued a notice to customers regarding changes to delivery guarantees and surcharges during the peak season. The amounts for two package surcharges are changing:

Source: Canada Post, customer notice «Changes to Delivery Guarantees and Surcharges During Peak Season,» posted on September 2, 2026, and effective November 2, 2026. Estimated amounts, which vary depending on the service, commercial agreement, and province.

The «out-of-specifications» surcharge of 400 $ warrants special attention: a single incorrectly sized package can wipe out the profit margin on several dozen orders. The specification thresholds are listed in the Customer Guide—Parcel Services, which is scheduled to be updated on November 21, 2026. Our report on the Additional handling fees and oversized packages explains how to audit your box sizes.

How has the delivery guarantee been tightened?

This is the most costly change, because it doesn’t show up on a bill. For items mailed between November 2, 2026, and January 10, 2027, Canada Post will only honor claims for late delivery if the item arrives two or more business days after the standard delivery time.

The services in question are domestic services in Canada: Priority, Xpresspost, and Expedited Packages. Specifically, an Xpresspost package delivered one business day late during peak periods no longer qualifies for a refund. This one-business-day grace period is now borne solely by the sender.

Three practical implications for an SME:

• Don't promise the standard delivery time as a firm date anymore on your product pages between November and January. Add one business day to the dates shown.
• Review your claims process : Complaining about a one-business-day delay with these three services is now a waste of time. Our guide on the Money-Back Guarantee for Late Delivery compares the policies of the four major carriers.
• Compare with private carriers : UPS, FedEx, and Purolator maintain their own warranty policies during peak periods, which are sometimes stricter and sometimes more generous, depending on the service.

How much are the fuel surcharges this week?

Canada Post's fuel surcharges are revised weekly. For the week of November 2–8, 2026, the rates are as follows:

The temporary rate reduction applies a discount of 15 % to the published surcharge for domestic packages, with a minimum of 25 % after the discount, effective October 5, 2026, through January 3, 2027. It does not affect shipments to the United States or international shipments. Our analysis of the 15% decrease in Canada Post's fuel surcharge from Q1 to Q3 explains the calculation and the eligible services.

Source: Canada Post, «Fuel Surcharges on Mail and Packages» support page, rates as of November 2, 2026. Rates change weekly: check them before setting a selling price.

What are peak surcharges from other carriers?

Peak season surcharges (or «demand surcharges») are temporary fees added to the base rate during periods of high demand. At UPS, FedEx, and Purolator, they generally consist of three components:

• Residential Package Surcharge : approximately 1 $ to 8 $ more per shipment, depending on the service and the volume shipped, typically from late October to mid-January.
• Surcharge for Oversized Packages : Additional handling fees and charges for oversized packages are increased during peak periods, sometimes by 50 $ or more per non-compliant package.
• Volume-Based Surcharge : For large shippers, fees apply when the weekly volume exceeds a certain percentage of the baseline volume.

Dates and amounts change every year, and the figures above are for reference only: they vary depending on the carrier, the service, the province or state, and your commercial agreement.

Why the 2026 model costs more than the previous one

Three factors are at play. First, the across-the-board increases in January 2026 (from 5 % to 6 % for major carriers) serve as a new basis for calculation: a percentage surcharge is applied to fares that are already higher. Second, ancillary surcharges—fuel, residential, and extended-zone—continued to rise throughout the year. Finally, the tightening of Canada Post’s guarantee shifts a risk that was previously shared to the shipper: this is not a rate increase, but it is indeed a cost.

And the January 2027 bill has already been announced. Our articles on the UPS rate increase in 2027 and the FedEx rate increase in 2027 outline what lies ahead for Canadian small and medium-sized businesses starting on the 1st^er January.

What steps should be taken between now and January 10, 2027?

1. Check your dimensions before shipping

With a 400 $ out-of-specification surcharge, verifying box sizes is no longer just an administrative task—it’s your most effective performance metric for the quarter. Measure your five most frequently used boxes and compare them to the thresholds in the Customer Guide.

2. Add one business day to your promised dates

The guarantee no longer covers the first business day of delay for Priority, XpressPost, and Expedited Packages. List dates you can meet, not delivery standards.

3. Recalculate your total cost per package

Base rate + fuel surcharge (41.60 % for local deliveries this week) + residential surcharge + peak-hour surcharge. It is this total—not the listed rate—that should determine your selling prices and your free shipping threshold for the holidays.

4. Anticipate what can be anticipated

Predictable B2B restocking and shipments: Anything shipped before mid-December avoids peak volume and delays. Check out the Holiday Shipping Deadlines for 2026 in Canada.

5. Diversify and play with volumes

Peak surcharges and warranty policies vary from one carrier to another. An individual small or medium-sized business has little bargaining power; by working through a partner that aggregates the shipping volumes of hundreds of companies, it gains access to terms comparable to those offered to large corporate accounts. A multi-carrier strategy When properly adjusted, it can reduce the total bill by 20 % to 30 %.

Example: The true cost of a package in December 2026

Illustrative calculation by Expert Shipping, based on fuel surcharge rates from November 2 to 8, 2026, and the 30 $ surcharge in effect on November 2, 2026. These amounts are for illustrative purposes only; they vary depending on the agreement, service, and province.

The difference is the key: During peak periods in 2026, it will no longer be the base rates that determine your margin—it will be the non-compliance surcharges.

Conclusion: The 2026 target hinges on compliance

The 2026 peak surcharges aren’t inevitable: they’re fees announced in advance that reward shippers who are prepared. Between now and January 10, 2027, all it takes are three simple steps: ensure packages meet specifications, set delivery dates with a one-business-day buffer, and recalculate total costs weekly based on actual fuel rates.

At Shipping Store, we help Canadian small and medium-sized businesses and individuals take advantage of rates negotiated with major carriers—surcharges included—and we verify the dimensions of your shipments before a 400 $ surcharge appears on the invoice. Request your free quote at expertshipping.ca and cross Pointe 2026 without any unpleasant surprises.

Rate information obtained on November 2, 2026, from Canada Post (customer notice regarding the peak season, effective November 2, 2026, and support page on fuel surcharges). All amounts are approximate and vary depending on the commercial agreement, the service, and the province or state. Confirm the current rates with your carrier before finalizing any pricing decisions.