Fulfill Team·Updated September 29, 2026·Add Fulfill as a preferred source on GoogleTo choose a 3PL provider, start from your own order data, not from a provider's pitch. Write down what you ship, how much and where it goes, send that same data pack to a shortlist of providers, and compare their quotes on total cost per order rather than headline rates. Then score each one on fit, location, technology and service, call their references, and run a small pilot before you sign a contract you have read line by line.
This guide walks through each step, with a data pack template, a worked quote comparison, a scoring method, the contract terms to check and the red flags that should end a conversation. If you are still deciding whether to outsource at all, start with what a 3PL is and what it does.
Most brands start looking for a 3PL for one of two reasons. Something in their own operation is breaking (orders ship late, stock counts drift, the garage or back room is full), or the business is changing (a new sales channel, a new region, a jump in volume, a move from wholesale into direct to consumer). Amazon's own 3PL selection guide frames it the same way: operational problems or structural business changes. Knowing which one you are solving tells you what to weigh most heavily later.
Then list the services you need, and the ones you do not:
A provider that does everything is not automatically a fit. Depth in the three or four services you actually use matters more than a long service menu.
Quotes are only comparable when every provider prices the same business. Put these facts in one document and send it to every 3PL you talk to:
| Item | Why the 3PL needs it |
|---|---|
| Orders per month, average and peak month | Sets labor, pricing tier and whether you meet their minimums |
| Units per order | Drives pick fees; many 3PLs charge per additional item |
| SKU count and your top sellers | Drives storage layout and pick paths |
| Product dimensions and weights | Drives storage type, packaging and shipping cost |
| Inbound profile: pallets or cartons, how often, from where | Drives receiving fees and dock scheduling |
| Sales channels and platforms | Tells them which integrations and retailer rules apply |
| Where your customers are (orders by state or region) | Shapes the location decision in step 5 |
| Special handling: lot or expiry tracking, hazmat, temperature, fragile, oversized | Rules out providers that cannot handle it |
| Returns share of orders | Sizes the returns workload |
| Service expectations: order cutoff time, packaging standard, reporting | Becomes the basis of your service level agreement |
Twelve months of order history exported from your store or order management system covers most of this. If you only have a few months, say so and give your forecast; a 3PL prices risk into a vague brief.
The number of 3PLs is large, so filter hard before you talk to anyone. Four filters do most of the work:
If you want to compare 3PL services on capabilities and overall value in one place, Fulfill.com's 3PL marketplace lists providers with their specialties, locations and customer reviews, and the 3PL matching form takes your requirements and connects you with providers that fit them.
3PLs price by activity, and every provider bundles activities differently. One quotes a low pick and pack fee and charges separately for each additional item and for packaging. Another quotes a higher fee that includes both. Comparing the headline fees tells you nothing. For typical rates on each line, see our 3PL pricing guide.
A complete quote should show every one of these lines:
Then run each quote against the order profile from your data pack. Here is how two quotes compare for one example profile of 2,000 orders a month, two units per order and 40 pallets in storage:
| Line | Quote A | Quote B |
|---|---|---|
| Headline pick and pack fee | $2.75 per order | $3.25 per order |
| Additional item | $0.50 each: $1,000 | Included |
| Packaging | $0.40 per order: $800 | Included |
| Base pick and pack, 2,000 orders | $5,500 | $6,500 |
| Storage | $30 per pallet: $1,200 | $40 per pallet: $1,600 |
| Monthly total | $8,500 | $8,100 |
| Cost per order | $4.25 | $4.05 |
Quote A has the lower headline fee and the higher cost per order. The same logic answers the question of a provider that quotes a low per-pallet rate and makes up for it elsewhere: price the whole profile, then ask each 3PL to confirm in writing which activities are billed outside the rate card. Compare shipping separately, zone by zone, because the warehouse location changes it, as the next step shows.
Be wary of a quote far below the others. It usually means a line is missing, a minimum is hidden, or the provider has not understood your data pack. Volume discounts are worth asking for, since economies of scale should lower your per-order cost as you grow, but get the tiers in the contract.
Parcel carriers price by zone, and zones measure distance from the warehouse that ships the order. Under USPS rules, zone 1 covers destinations within about 50 miles and zone 8 covers destinations beyond about 1,800 miles. At USPS Ground Advantage commercial prices effective July 12, 2026, a 3 lb parcel costs $8.64 to zone 1 and $15.75 to zone 8, 82% more for the same box. Farther zones also mean more days in transit.
Your carrier and your 3PL's negotiated rates will differ from this published table, but the shape holds: the farther the order travels, the more it costs and the longer it takes. So start the location decision from your customer map, not from where your office is. A brand based in Denver whose customers are mostly on the East Coast may be better served by a 3PL in the East. Once your customers spread coast to coast, ask shortlisted providers whether they can split inventory across two or more warehouses, and what that does to storage and receiving costs.
Narrow the longlist to three to five providers and score each one the same way. Agree the weights with your team before anyone sees a quote, so the cheapest or most charming provider does not rewrite the criteria. Score each criterion from 1 to 5, multiply by its weight and add the results.
| Criterion | Example weight | What to check |
|---|---|---|
| Operational fit | 25% | Clients with similar products, channels and special handling |
| Cost per order | 20% | Your data pack priced in full, shipping included |
| Location and shipping | 15% | Average zone to your customers, carrier options, order cutoff time |
| Technology and integrations | 15% | Native integration with your store, marketplaces and systems; live inventory and order status |
| Service and communication | 10% | A named account contact, how issues are raised and resolved |
| Scale and stability | 10% | Peak capacity, time in business, financial health |
| References | 5% | What current clients like you say (step 7) |
Technology deserves its weight. In the 2026 Annual Third-Party Logistics Study, 90% of shippers said technology capabilities are among the most critical elements in selecting a 3PL. Check that the provider's warehouse management system connects to your store and marketplaces without custom work, that order management and inventory sync run automatically, and that you can see stock, orders and billing yourself instead of waiting for a report.
Pro tip
Before you commit to a 3PL, ask how your orders, fees, and payouts will flow into your accounting system. Connex bridges that gap automatically, syncing your sales channels and financials without requiring your 3PL to change how they operate.
For the questions to ask in each category, use the 3PL provider questions tool, which lets you filter a question bank by topic and export your list. Our guide to the questions to ask a new 3PL explains what a good answer sounds like.
Visit the warehouse that would ship your orders, not the company's flagship building. Look at how inbound stock is staged, how pick locations are labeled, how packing stations check orders, and whether the team can show you live accuracy and on-time numbers.
Call references that look like you: same channels, similar order volume, similar products. Ask what went wrong during onboarding, how the 3PL handled their last peak season, whether invoices matched the quote, and whether they would choose the same provider again.
Run a pilot before you move all of your inventory. Send a limited set of SKUs or one sales channel for a few weeks, and agree in writing what a pass looks like:
Service level agreements are the most common way shippers and 3PLs formalize their relationship, according to the 2026 Annual Third-Party Logistics Study, and a little over half of shippers do not rebid the business when a contract ends. The terms you sign today tend to stay in place, so read them closely:
Read the exit terms as closely as the service terms. They decide what a change of provider costs you later.
If you already have a provider and are here because it is not working, the same data pack and scoring apply, but the order of operations changes: read your contract, plan the inventory move and run both warehouses in parallel before you switch off the old one. Our guide to switching 3PL providers covers each step.
3PLs charge per activity: receiving, storage, pick and pack, packaging, shipping and account fees. Your total depends on your order volume, units per order, product size and where your customers are, which is why comparing cost per order on your own data matters more than any average. See our 3PL pricing guide for typical rates on each line.
You give up direct control of the warehouse floor, share labor and space with other clients at peak, and depend on the 3PL's systems for inventory and order data. Fees can add up if the contract is loose, and moving to another provider later takes planning. A clear data pack, a pilot and a contract with service levels and exit terms reduce each of these risks.
Amazon describes Amazon Supply Chain Services as its 3PL, with Multi-Channel Fulfillment as the fulfillment arm that ships orders from channels other than Amazon. It runs its own warehouses and carrier network, which is 3PL work; a 4PL manages other providers rather than running the operation itself.
Published rankings order logistics companies by revenue. Transport Topics' 2025 Top 100 Logistics list, for example, ranks North American freight brokerage, freight forwarding, warehousing and contract carriage companies by annual gross revenue, with Amazon, C.H. Robinson and GXO Logistics in the first three places. Revenue measures scale, not fit. For most brands, the right 3PL is the one that fits its order profile, channels, products and customer locations, which is what the steps above are designed to find.
Three to five is a workable shortlist. Fewer gives you little to compare; more makes it hard to give each quote, reference call and visit proper attention.
Yes. Some brands split by region to shorten shipping zones, or by channel, with one provider for direct to consumer orders and another for retail or wholesale. Each additional provider adds an integration, a contract and an inventory pool to manage.
No. Choosing a 3PL means choosing a company to store and ship your products. 3PL software, such as a warehouse management system, is what 3PLs and in-house warehouses run to manage the work. If you operate a warehouse and are choosing that system, see our comparison of WMS platforms for 3PLs.
Choosing a 3PL comes down to a few disciplines: send every provider the same data, compare total cost per order, put the warehouse near your customers, score against weights you set in advance, and prove the fit with a pilot and a contract you have read. When you are ready to compare providers, Fulfill's 3PL Finder matches your requirements with 3PLs that fit them.
Insights on choosing a 3PL, evaluating fulfillment partners, and scaling your eCommerce operation, from the team behind Fulfill.com.
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