What belongs on your ecommerce peak season checklist

Ecommerce peak season is the stretch of weeks around Black Friday, Cyber Monday and Christmas when online orders and parcel volumes stay well above a regular week. On the nShift platform, shipments stayed above a regular early-November week for five weeks in both 2024 and 2025, from mid-November to the Friday before Christmas week, according to our Shape of peak report.

Much of a retailer's peak season is decided before the first Black Friday order arrives: how much carrier capacity is booked, what the checkout promises, what happens when a carrier falls behind, and how returns will be handled in January.

In this guide: each item on the checklist, explained in the order you need it, from 90 days before Black Friday to the January returns. The full checklist closes the timeline, followed by five metrics to track each week.

What is ecommerce peak season?

Ecommerce peak season is the period of highest order and shipment volume in the retail year, usually from mid-November to the last delivery dates before Christmas, followed by a wave of returns in January. In the UK it falls inside the Golden Quarter, the retail name for October to December.

For a delivery team, peak season means the weeks when parcel volumes stay above what the operation handles in a regular week. In those weeks the business needs extra carrier collections, extra warehouse shifts and a delivery promise at checkout that holds under higher volumes.

When is peak season in ecommerce, and how long does it last?

On the nShift platform, peak shipping began in the week before Black Week and continued until the Friday before Christmas week, in both 2024 and 2025. The busiest shipping day in both years was Cyber Monday, ahead of Black Friday. Promotions often start earlier, from Singles Day on 11 November, and returns follow in January.

The Shape of peak report shows both seasons day by day, and our Black Friday shipment benchmarks by country compare seven sending markets. Use those benchmarks to test the forecast you build from your own promotions, markets and order history.

A peak season shipping timeline, from 90 days out to January

The timeline has four phases: 90 days or more before Black Friday, the last 30 days, the peak weeks, and January. Teams reading this in November can start with the last 30 days.

Carrier capacity to book 90 days before Black Friday

Book carrier capacity per lane, with a backup carrier

Logistics turns the campaign forecast into daily collection volumes per carrier and per lane (each origin-to-destination route), and confirms them with each carrier in writing. For each busy lane, agree a second carrier and the rule for moving volume to it: when the first carrier reaches its agreed limit, or when its on-time performance drops below an agreed level. At Sweden Buyers Club, new carriers can be added in hours rather than days, which lets the retailer scale during seasonal peaks. Danish retailer Imerco sees peak-season orders rise by as much as 240% and handles those spikes with nShift Ship integrated into its warehouse.

Checkout, returns and packaging decisions 90 days before Black Friday

Decide the delivery options each market sees at checkout

Keep the list short: two to four clearly labeled options, each with its own order-by cut-off and delivery date. Where your tests show that shoppers prefer pickup points or parcel lockers, list them first or preselect them, and let shoppers choose the exact pickup point. Expanding its pickup-point options through nShift Checkout helped Flying Tiger Copenhagen achieve a 20% increase in conversions. With nShift Checkout, these options, prices and free-delivery thresholds are managed as rules that ecommerce teams can change per campaign.

Our guides to PUDO delivery and to the delivery mix explain how to find the right split of delivery options per market.

Set the peak returns policy before the promotion

Agree the return window, any return charge and the exchange options for orders placed during peak, and show them before the customer buys. nShift Returns can apply fees and return periods automatically based on order value or order date, so orders placed during a gifting campaign can get a longer window.

Our article on charging for returns by order walks through the return fee and window options.

Size packaging for peak volumes

Many parcel carriers charge by the greater of actual and dimensional (volumetric) weight, so an oversized box can raise the cost of the parcel inside it. Before peak, cut the number of box formats, match the most frequent orders to the smallest box that protects them, and ship suitable items in their own retail packaging. The same work also prepares you for the EU's new packaging rules.

The last 30 days before Black Friday

Make the delivery promise specific

Show a delivery date at checkout in place of a range such as "2 to 5 days", with the order-by cut-off for that date and a countdown to it. Calculate the date from warehouse processing time, weekend and holiday collections, and the carrier's transit time in the busiest weeks. On orders shipped to EU customers from outside the EU, include the full landed cost (delivery, duty and taxes) in the total shown at checkout, so the customer sees it before paying.

Our story on vague delivery ETAs at Nordic checkouts shows what a range costs in trust, and the delivery promise health check scores your current promise in a few minutes.

Confirm weekend collections and Cyber Monday cut-offs

Weekend volumes rise furthest at peak: on the nShift platform, Black Week Saturday reached four times a regular early-November Saturday in 2025 (Shape of peak report). Agree Saturday and Sunday collections with each carrier, and set Monday 30 November cut-offs and staffing as the likely busiest day of the season.

Rehearse a carrier outage

Hold a short exercise, often called a game day, in which one carrier on a busy lane is treated as unavailable and a key integration slows down. Check that the fallback rule moves orders to the backup carrier, that labels print, that tracking events arrive, and that the team knows who decides what. Write the steps into a runbook: a short procedure the on-call team can follow for each predictable incident, from a carrier outage to a label printer failure.

Many teams freeze code changes before Black Friday. For the delivery rules you can still change once a freeze starts, see our guide to the Black Friday code freeze.

The signals to watch on a peak board

A peak board is one shared dashboard for the peak weeks, set up in the last 30 days before Black Friday. It brings together the signals that need action on the same day:

Agree who checks the board and at what times, the level on each line that calls for action, and who takes that action.

Peak season logistics during Black Week and the weeks after

Check carrier performance by lane every day

Compare each carrier's deliveries against the dates shown at checkout, lane by lane, and apply the fallback rule when a carrier misses dates. Pausing a slipping service at checkout lets new orders go to a service that can keep the promise.

The method for comparing carriers on equal terms is set out on our page about measuring carrier performance.

Tell customers about a delay before they ask

Delays, missing notifications and pickup points customers did not expect were the recurring themes in negative comments when we analyzed over 115,000 Nordic delivery ratings from December 2025 (what the ratings reveal). nShift Track sends shipping, delay and delivery updates in your brand as carrier events come in, and can alert your team when a carrier goes silent on a parcel.

January returns and freight invoices after peak

Prepare for the returns wave

Peak orders and unwanted gifts come back in January. An exchange keeps the sale, so offer it first when the reason is size or fit: in research IMRG carried out for nShift (April 2026, 1,000 UK consumers), two in three shoppers (66.1%) said they would likely choose an easy exchange over a refund if offered one. Shorten the time from drop-off to credit, and consider instant store credit and refunds without a return for low-value items. nShift Returns can offer an exchange inside the returns flow.

Our article on January returns covers the post-peak returns plan, from the first week of January onward.

Check freight invoices against what shipped

Peak-week invoices add peak surcharges to the base rates, and the shipment data needed to verify each charge is often held outside the invoice. Match every invoice line to the shipment it belongs to and the rate in your contract, so wrong charges can be disputed with evidence. nShift Audit checks every invoice line against your contract and your shipment data, and our freight invoice audit guide shows where billing errors appear.

The full ecommerce peak season checklist

Under each item is the team that usually takes it on; adjust it to how your organization splits the work.

Which delivery metrics should you track weekly during peak season?

Track five delivery metrics every week from early November to the end of January, and compare each week with the same week of the previous peak, because volumes change sharply from one peak week to the next.

• Estimated delivery date (EDD) accuracy: the share of orders delivered on or before the date shown at checkout. It shows whether the promise held as volumes rose.
• First-attempt delivery rate: the share of parcels delivered at the first try. A failed first attempt usually means a second delivery, in the weeks with the least spare capacity.
• Customs-hold rate: the share of cross-border parcels stopped for missing data or unpaid charges, and a likely cause of missed delivery dates.
• WISMO contact rate: "where is my order?" (WISMO) contacts per 100 orders. It tends to rise when tracking updates are late.
• Unit shipping cost: the cost per parcel including surcharges, compared with the same weeks last year.

In January, review the season's five metrics against the previous peak, and record what to change in capacity, cut-offs and carrier rules before the next one.

Our delivery KPIs guide explains how to measure delivery performance against the promise made at checkout, and the nShift glossary defines the peak terms in this guide, from game day to peak board.

What changed for cross-border shipping and packaging in 2026?

EU customs duty and handling fee on low-value parcels

Since 1 July 2026, the EU has charged a flat €3 customs duty per item on parcels worth €150 or less imported from outside the EU, replacing the old duty exemption (identical goods in one parcel count as one item). A separate €2 handling fee per item on distance sales from outside the EU (goods sold online and shipped to the buyer) is due from November 2026, on top of the duty, under a Commission act adopted in September 2026. Decide per market whether to include duty and fees in the checkout price or to collect them at delivery, and show the full landed cost either way. Our guide to EU customs changes in 2026 has the detail, and the IOSS (Import One-Stop Shop) explainer shows how import VAT is collected at checkout.

EU packaging rules (PPWR)

The EU Packaging and Packaging Waste Regulation (PPWR) has applied since 12 August 2026. Its general obligations are in force now, and its numeric caps, including limits on empty space in ecommerce packaging, phase in through 2030 and beyond. Dates for each phase are in our PPWR guide.

Plan your peak with two seasons of shipment data

The Shape of peak report shows the 2024 and 2025 peaks day by day and places the 2025 pattern on the 2026 calendar, with the days that need the most capacity, weekends included. For the full journey from checkout to returns at peak, see our Black Friday delivery hub.