3PL Fulfillment Guide: Canada, US and UK Buyer's Checklist

Picking a 3PL in Canada, the US or the UK comes down to five things: the real all-in cost per order (not the pick fee on the rate card), carrier mix and zone coverage from each warehouse, how they handle customs and tax on cross-border volume, integration quality with your cart and ERP, and who owns the shipping account. Everything else is negotiable. This guide walks through what to ask, what the numbers usually look like in each market, and where contracts quietly cost you money for years.

Start with your order profile, not the provider list

Before you talk to anyone, write down six numbers: monthly order count, average units per order, average billable weight, SKU count, peak-to-trough ratio, and percentage of orders going cross-border. A 3PL that’s excellent for 800 orders a month of apparel will be mediocre for 8,000 orders of heavy home goods.

Also pull twelve months of your own carrier invoices. You need actual zone distribution and dimensional weight, because a warehouse that shortens zones by one on 40% of your volume can beat a cheaper pick fee easily.

What 3PL pricing actually looks like

Rate cards are built to look cheap on the line item everyone compares (the pick). Costs hide in receiving, storage minimums, packaging materials, and account management fees. Ranges we see across client accounts in 2024 and 2025:

• Receiving: $35 to $55 per labor hour, or a flat fee per pallet or carton
• Pick and pack: roughly $2.50 to $4.00 for the first unit, $0.25 to $0.75 for each extra
• Storage: per pallet per month in North America, often per pallet per week in the UK
• Packaging: either passed through at cost plus a markup or bundled into the pick fee
• Account or platform fee: $250 to $1,500 per month, sometimes waived above a volume floor

Ask every finalist to price your last full month of real orders, line by line. Not a sample. A blended cost per order from your actual data is the only comparable number.

Country-by-country differences that matter

Factor	Canada	United States	United Kingdom
Main parcel carriers	Canada Post, Purolator, UPS, FedEx, Intelcom	UPS, FedEx, USPS, regional carriers	Royal Mail, Evri, DPD, Yodel, UPS
Typical warehouse footprint	1 to 2 nodes (GTA plus Vancouver)	2 to 4 nodes for 2-day ground coverage	1 node covers most of the country
Storage billing	Per pallet or bin, per month	Per pallet or bin, per month	Commonly per pallet per week
Tax handling	GST/HST/PST, importer of record setup	Sales tax nexus by state	VAT registration, £135 consignment rule
Biggest watch-out	Remote area surcharges, carrier labor risk	Dimensional weight and address corrections	Peak surcharges, EU exports post-Brexit

Canada

Geography does most of the damage. A single Toronto-area warehouse serves Ontario and Quebec well and everything west of Winnipeg poorly. Remote area surcharges apply to a long list of postal codes, and they add up fast if you sell outdoor or rural-skewing products. Canada Post remains the cheapest option for light parcels, but the 2024 labor disruption taught a lot of brands to keep a courier backup live and tested, not just contracted.

If you’re importing from the US, sort out importer of record and customs broker arrangements before your first inbound. CUSMA duty relief only applies when the goods actually qualify and the paperwork supports it.

United States

Coverage math drives everything. Two nodes (one east, one west) put most of the population inside two ground days. Ask each 3PL for a zone map based on your actual order file, then compare the transportation delta against the extra storage and inventory split cost.

Dimensional weight is where budgets break. Confirm the 3PL’s cartonization logic, box inventory, and whether they’ll right-size for your top 20 SKUs. A single box change on a fast-moving SKU can save six figures a year on real volume.

United Kingdom

One well-located warehouse in the Midlands reaches nearly everyone next day. Pricing is tighter and carrier competition is genuinely fierce, which is good for you. Two things need attention: VAT treatment on consignments valued at £135 or less (the seller generally accounts for UK VAT at the point of sale rather than at import), and EU shipping, where IOSS registration and customs data quality decide whether your parcels move or sit. Rules change, so confirm current thresholds with your accountant before you build the workflow.

Contract terms worth fighting for

• Carrier account ownership. Shipping on your own FedEx or UPS account keeps rate negotiation, invoice data and refund rights with you. If the 3PL insists on its accounts, get invoice-level detail in writing.
• Rate card lock and increase caps. Cap annual increases and tie general rate increase pass-throughs to published carrier changes, not to “market conditions.”
• Accuracy and on-time SLAs with teeth. 99.5% pick accuracy and 99% same-day ship on orders received before cutoff, with credits when they miss.
• Exit terms. 60 to 90 day notice, a fixed per-pallet outbound transfer fee, and no hostage clause on inventory.
• Peak surcharges disclosed up front. Ask for last year’s actual peak invoice from a comparable client, redacted.

Don’t lose the shipping refunds in the handoff

When a 3PL bills you a bundled “shipping cost,” carrier billing errors, late deliveries, duplicate charges and invalid surcharges quietly become someone else’s revenue or nobody’s. We see this constantly. Late delivery credits, address correction errors and residential misclassification are real money, and eligibility rules vary by carrier and service (money-back guarantees have been suspended or narrowed at times, so check current terms).

Keep the invoice trail. Whether you ship on your account or your 3PL’s, you should be able to see every charge line. That’s exactly what we audit, and how it works is designed to sit alongside a 3PL relationship rather than replace it. If you want a read on what your current setup is leaking, start a free audit with a month of invoices.

A short vetting script

Ask each finalist: What is your average receiving turnaround in hours? What was your December pick accuracy? Which carriers do you have direct contracts with and at what discount tiers? Can I see the raw carrier invoice behind my monthly bill? Who is my day-to-day contact and how many accounts do they carry? What happens if I need to add a second node in nine months?

The answers you get in the first ten minutes usually tell you more than the rate card does.