3PL fulfillment means outsourcing warehousing, order fulfillment, and shipping to a third-party logistics provider instead of handling them in-house. A 3PL receives your inventory, stores it, and picks, packs, and ships orders on your behalf while you retain ownership of the inventory and the customer relationship. Most brands make the switch once order volume, SKU complexity, or geographic reach outgrows what they can manage internally.
This guide is for ecommerce founders and operations leads who are evaluating whether to bring in a 3PL for the first time, or who want a clear reference for how 3PL fulfillment actually works before comparing providers. Below is what a 3PL does, how pricing is typically structured, and how to know when outsourcing fulfillment makes sense for your business.
What Does a 3PL Do?
A third-party logistics provider (3PL) is an outside company that handles the physical side of order fulfillment: receiving inventory, storing it, picking and packing orders, shipping them, and processing returns. You keep ownership of the inventory and the direct relationship with your customer; the 3PL is essentially an extension of your operations team, running the warehouse so you don’t have to.
Most 3PLs handle some combination of the following:
- Receiving and inspecting inbound inventory
- Storage (ambient, temperature-controlled, or bin/shelf storage depending on product type)
- Pick, pack, and ship for B2C ecommerce orders
- EDI-compliant B2B distribution for wholesale and retail accounts
- Kitting and assembly for bundles or subscription boxes
- Returns processing and restocking
- Integration with your storefront, marketplace channels, and accounting software
How 3PL Fulfillment Works, Step by Step
The core fulfillment cycle looks the same across most providers:
- Inbound receiving: Inventory arrives at the warehouse, gets counted and inspected against your packing list or advance ship notice (ASN), and is put away into storage.
- Storage: Inventory sits in the warehouse until it’s ordered, typically billed by pallet, square footage, or cubic foot per month.
- Order sync: When a customer places an order on your storefront, it syncs to the 3PL’s warehouse management system (WMS), usually in real time through an API integration.
- Pick and pack: Warehouse staff pull the ordered items, pack them, and generate a shipping label.
- Shipping: The order ships via the carrier the 3PL has negotiated rates with, often at a discount compared to what an individual brand could get on its own.
- Returns: If a customer returns an item, the 3PL receives it back, inspects it, and restocks it if sellable, updating your inventory count in the process.
What Does 3PL Fulfillment Cost?
Most 3PL pricing breaks down into five components: receiving, storage, pick and pack, shipping, and value-added services (like kitting or returns processing). Typical national ranges in 2026 look like this:
- Receiving: $5 to $45 per pallet, or $0.30 to $1.50 per unit for smaller items
- Storage: $15 to $35 per pallet per month, varying significantly by region
- Pick and pack: $2.50 to $8.00 per order, plus a smaller fee per additional item
- Returns processing: $2 to $7 per return, depending on product complexity
- Monthly minimum: commonly $500 or more if your fees don’t reach that threshold
Rates vary by region, with major metros like Los Angeles and the New York/New Jersey corridor running 10 to 50 percent above secondary markets. Most brands spend somewhere between 8 and 15 percent of gross sales on logistics once a 3PL is in place.
3PL vs. Self-Fulfillment: When Does Outsourcing Make Sense?
Self-fulfillment (packing and shipping orders yourself, or from a single office or garage) works fine at low order volume, but it typically breaks down once a brand hits a few hundred orders a month, adds SKU complexity, or needs to reach customers in multiple regions quickly. Signs it’s time to consider a 3PL:
- Order volume has grown to the point where fulfillment is taking meaningful time away from growing the business
- You’re paying more for shipping than a 3PL’s negotiated carrier rates would cost
- You’re expanding into wholesale or retail accounts that require EDI compliance you can’t manage manually
- You need multi-region coverage to hit reasonable delivery times across the country
- Returns volume has become difficult to process accurately in-house
3PL vs. Amazon FBA: What’s the Difference?
Fulfillment by Amazon (FBA) bundles storage, picking, packing, shipping, and customer service into a single per-unit fee, but only for orders placed on Amazon. A 3PL, by contrast, fulfills orders from any sales channel, including your own website, wholesale accounts, and other marketplaces, from the same inventory pool. Many growing brands use a 3PL for Fulfillment by Merchant (FBM) specifically to avoid Amazon’s strict inbound requirements while keeping more control over branding and the unboxing experience.
Frequently Asked Questions
3PL stands for third-party logistics. It refers to an outside company that handles warehousing, order fulfillment, and shipping on behalf of a brand that retains ownership of its inventory and customer relationships.
There's no fixed threshold, but most brands consider a 3PL once they're shipping at least a few hundred orders a month or find fulfillment is taking up more operational time than it's worth managing in-house.
No. The 3PL handles the physical fulfillment, but you still own the customer relationship, branding, and any communication about orders. Most 3PLs also support custom packaging and branded inserts to keep the unboxing experience consistent with your brand.
Yes. Many 3PLs run EDI-compliant B2B distribution for wholesale and retail accounts alongside B2C ecommerce fulfillment from the same facility and inventory pool, which keeps stock levels unified across every channel.
The Bottom Line
3PL fulfillment lets a growing brand outsource the physical work of warehousing and shipping without giving up ownership of inventory or the customer relationship. TRG Fulfillment has run both B2B and B2C fulfillment out of Torrance, California for more than 25 years, combining port-adjacent warehousing with a modern, cloud-based WMS. Contact TRG Fulfillment to talk through whether outsourcing fulfillment makes sense for your business right now.