Third-Party Logistics (3PL): How It Works (2026)

Third-party logistics (3PL) is when a retailer outsources its fulfillment operations—including warehousing, inventory management, picking and packing, and shipping—to a specialized provider. This can help businesses scale fulfillment without building their own warehouse infrastructure or adding an in-house fulfillment team.

The US 3PL market reached $323.4 billion in 2025, up 5% year over year, as more brands outsourced their logistics operations.

This guide covers what third-party logistics is, how a 3PL works, when outsourcing fulfillment makes sense, the trade-offs to consider, and how to choose the right 3PL provider.

What is third-party logistics?

Third-party logistics (3PL) in retail is the outsourcing of fulfillment operations, like warehousing, transportation, and order fulfillment, to a specialized external provider. A 3PL lets you scale order fulfillment and reduce overhead without needing your own warehouse space or in-house fulfillment staff.

A 3PL handles:

• Warehousing and storage
• Inventory management
• Picking and packing orders
• Shipping and carrier coordination
• Returns processing

3PLs work with businesses of every size, from newly launched brands to high-volume retailers shipping thousands of ecommerce orders a day. Businesses store inventory with the provider, which then manages fulfillment from their warehouse network.

How does a 3PL work?

While the 3PL fulfillment process can vary by provider, the typical flow looks like this:

1. Receiving: You send inventory to the 3PL’s warehouse, and your ecommerce platform integrates with the 3PL’s warehouse management system (WMS) to sync stock levels.
2. Order sync: A customer buys a product on your website, and the order details are automatically sent to the 3PL’s system.
3. Pick and pack: The warehouse team pulls the items and packs them with the necessary labels.
4. Shipping: A carrier, like UPS or FedEx, collects the package and delivers it to the customer’s door.
5. Returns: If a customer sends an item back, the 3PL processes it according to your agreed workflow.

3PLs are just one type of logistics management provider. Other logistics providers manage different parts of the supply chain.

4PL vs. 3PL vs. 2PL

3PL isn’t the only fulfillment model out there. 2PL, 3PL, and 4PL providers differ mainly in how much of the logistics operation they manage.

 A 3PL focuses on fulfillment execution, while a 4PL takes on broader coordination across logistics partners. 

2PLs are carriers that transport your goods. Freight forwarders are intermediaries that coordinate complex shipping itineraries using other companies’ 2PL assets. 

3PL versus dropshipping

Dropshipping is an ecommerce fulfillment method in which you don’t stock the products you sell. Instead, when a customer buys something, you purchase the item from a third party, which ships it directly to the customer.

For many brands, the choice comes down to control and simplicity. 3PL fulfillment gives brands more control over inventory and the fulfillment experience, while dropshipping reduces the need to buy and hold inventory up front.

Some brands split the difference and fulfill through a multi-channel fulfillment (MCF) service instead of a traditional 3PL, trading some control over packaging and branding for lower per-order costs.

In general, a 3PL is better suited to brands that want more control over inventory and fulfillment, while dropshipping can be useful for testing demand without committing to inventory up front.

Why do companies choose to work with a 3PL provider?

Companies often choose a 3PL when order growth starts to strain their in-house fulfillment capacity, staffing, or costs. US business logistics costs reached $2.4 trillion in 2026, about 7.8% of GDP, according to the Council of Supply Chain Management Professionals’ annual “State of Logistics” report.

A 2025 Shopify survey of store owners found that high-revenue store owners, those earning $1 million or more in revenue, are more likely to face supply chain management, hiring, and staffing challenges.* As those pressures grow, outsourcing fulfillment can become a question of where a business wants to put its people, capital, and operational resources.

When should you consider outsourcing fulfillment logistics to a 3PL?

Consider a 3PL once your daily order volume, storage limits, demand surges, or shipping-speed expectations begin to strain your in-house fulfillment operations. Ask yourself these four questions to help decide if you’re ready.

1. Are you fulfilling more than 10 to 20 orders per day?

That’s roughly 300 to 600 orders per month, which can be a useful point to compare in-house fulfillment costs with outsourced options. Weigh the cost of a 3PL against what you currently spend on labor and space to pack and ship orders yourself.

2. Are you running out of space for inventory?

Storage costs are easy to leave out of fulfillment expense calculations. Compare your current warehouse costs against 3PL storage estimates.

3. Can your existing infrastructure handle a surge in demand?

A sustained spike in order volume, outside of a one-off flash sale, may require additional staff, space, or equipment. Compare those investments with the cost and flexibility of outsourcing fulfillment.

4. Do you want to offer faster shipping and fulfillment?

3PLs work with multiple clients, which can give them access to negotiated carrier rates and broader shipping networks. Many also support zone skipping and multi-carrier shipping. Ask a prospective 3PL about its shipping speed, fulfillment center locations, and delivery track record to find the right one.

Advantages and disadvantages of 3PLs

Outsourcing to a 3PL has its pros and cons. The trade-off is greater access to fulfillment infrastructure and expertise in exchange for less direct operational control. Weigh those benefits and risks against your business’s current needs.

3PL advantages

A 3PL can reduce the infrastructure and resources needed to manage fulfillment in-house. Four potential advantages include:

Test and launch in new markets

Expanding internationally requires a global fulfillment network, customs documentation, and managing customs and duties. Storing a small batch of inventory with a 3PL in a new market lets you test demand without building your own local warehousing and fulfillment operation first.

Free up capital that’s tied up in warehouse space

According to JLL Research, the US average industrial direct asking rent was $10.45 per square foot as of Q2 2026, with a 6.8% vacancy rate. 3PLs run shared warehouse networks across clients, which can reduce the need for a business to invest in its own warehouse space and capacity.

Reduce your overhead costs

A 3PL gives you trained warehouse staff and automation technology, like robotics for picking and packing, without the up-front costs of building those capabilities in-house. 

According to the same 2025 Shopify survey, store owners’ top financial goals shift from improving cash flow to reducing operating costs. Outsourcing fulfillment is one option businesses can evaluate as they look for ways to manage those operating costs.

Build more flexibility during supply chain disruptions

3PLs may offer access to multiple fulfillment locations and carrier relationships, giving businesses more options when disruptions happen. Manly Bands, a Shopify brand that sells wedding rings for men, used multiple shipping relationships to help manage delivery delays. COO Eric Farlow says, “By doing this, we have found that we have more control over our shipping commitments.”

3PL disadvantages

3PL outsourcing also introduces costs, operational constraints, and dependence on provider performance. Consider these six potential disadvantages before choosing a partner.

Up-front investment

Moving to a 3PL can involve several setup and ongoing costs. These fall into a few categories: transportation, receiving, storage (a recurring fee generally charged per cubic foot or pallet), pick-and-pack (per order and per item), shipping, and account setup. Some providers also require a minimum monthly spend.

Fixed warehouse workflows and operating hours

3PLs run on their own hours and workflows, so you can’t head down to the warehouse and pack orders yourself the way you could in-house. That can limit your ability to intervene directly when priorities or order volumes change.

Integration complexity

Moving to a 3PL is rarely plug-and-play. You may need to connect your warehouse management system (WMS), order management system (OMS), and enterprise resource planning (ERP) systems. Those connections need to keep inventory, orders, and fulfillment updates moving accurately between systems.

Less direct control over shipping

When you work with a 3PL, they control carrier selection, prioritization, and cutoff times. That can make it harder to intervene directly when you want to change how an order is handled or shipped.

Flamingo Estate deliberately keeps fulfillment in-house instead. Creative director Aaron Harvey says, “We don't have a 3PL. We pick and pack our own orders in a warehouse. We have tens of thousands of square feet of warehouse space and there are employees that are handwriting notes and tying ribbons. But this is what we do. This is our business.”

Dependence on provider performance

If a 3PL misses a service-level agreement, your business is stuck with the fallout. Even when the partnership works well overall, fulfillment mistakes can affect your customer experience.

Jing Gao, founder of Fly By Jing, learned that firsthand with a large shipment. Jing says, “They shipped out like 2,500 orders in one day and I was like, that's really fast, that's really amazing. And three days later I got the first email from a backer … it was a photo of a manila envelope with just shattered glass and chili oil inside. They did not, in fact, protect the jars. They put two jars next to each other in a manila envelope.”

Reverse-logistics challenges

An estimated 19.3% of online sales were returned in 2025, and 82% of consumers say free returns are an important factor in their purchase decisions. Because returns can represent a significant share of ecommerce orders, evaluate a provider’s reverse logistics processes as carefully as its outbound fulfillment capabilities.

3PL myths and misconceptions

These three common misconceptions can make businesses hesitant to consider a 3PL.

When you hand things over to a 3PL, you lose control

Inventory stored offsite isn’t immediately in reach, which can feel uncomfortable at first. But the level of control and visibility you retain depends on the provider’s reporting, technology, and communication practices.

3PLs are only for enterprise-sized businesses

3PLs work with brands of different sizes and fulfillment volumes. The better question is whether outsourcing makes sense for your order volume, storage needs, and fulfillment costs.

3PLs have too many hidden fees

3PL pricing can include charges for inbound costs, storage, customs, and packaging. Ask providers for a complete fee structure, including minimums and optional services, before signing a contract.

What are the types of 3PL companies?

3PL companies can be grouped by the function they perform, the products they specialize in, and whether they own their logistics infrastructure. Some providers handle several parts of fulfillment, while others specialize in a narrower service or industry need.

Full-service providers

Full-service 3PLs handle multiple parts of fulfillment, from warehousing to shipping, often across several locations. This can give cross-border ecommerce brands more fulfillment options across locations. 

Shopify Fulfillment Network is one example of a full logistics service provider. It offers:

• Inventory intelligence: Shopify recommends where inventory should be stored so it’s close to customers.
• Control over the fulfillment experience: Decide how fast orders are delivered and supply your own branded packaging.
• Easy integration: No technical integration is required; Shopify will help set up the Shopify Fulfillment app for you.
• Fast nationwide delivery: Fulfillment through trusted partners typically enables two- to three-day delivery.

3PL warehouses

Warehouses that store, ship, and handle returns are the most common type of 3PL. Look at how many distribution centers a 3PL operates and how close they are to your customer base, since location can affect delivery times. Also confirm the daily order-cutoff time, since orders placed after it may ship the next day.

Transportation-based 3PLs

These providers move goods between locations rather than handling warehousing or fulfillment. Depending on the service, this can include parcel carriers such as DHL, FedEx, UPS, and the USPS; local couriers such as Uber Direct, DoorDash, and Roadie; and freight platforms such as Flexport, Freightos, and Uber Freight.

Financial and information-based 3PLs

As ecommerce businesses focus more on unit economics, some turn to financial or information-based 3PLs for visibility into pick-to-pack costs and freight auditing.

Cold-chain logistics

Cold-chain logistics uses refrigerated and frozen storage facilities for products that must stay within strict temperature ranges, like pharmaceuticals, perishable groceries, and biotechnology samples.

Hazardous materials handling

Shipping hazardous materials, including everyday items like nail polish, perfume, hairspray, and power tools, often requires certifications, strict packaging requirements, and knowledge of transportation rules such as US Pipeline and Hazardous Materials Safety Administration (PHMSA) regulations.

Heavy-item fulfillment

Brands selling furniture, large appliances, or fitness equipment need a provider equipped to handle oversized items, with capabilities such as heavy-duty forklifts and white-glove delivery services that unbox and install the product.

Asset-based versus non-asset-based 3PLs

Asset-based 3PLs own their warehouses, trucks, and equipment. Non-asset-based 3PLs partner with other companies to use theirs instead.

Choose an asset-based 3PL when pricing stability and hands-on control matter most, like for branded packaging or specialized handling. Choose a non-asset-based 3PL when you need to scale quickly across regions or want broader geographic coverage.

What services does a 3PL provide?

A 3PL’s services can extend beyond basic warehousing and fulfillment to inventory management, shipping and returns, international logistics, and technology. In 2025, 90% of third-party logistics providers offered inbound logistics services, 72% offered inventory management, and 69% offered just-in-time services, according to Inbound Logistics.

Warehouse and inventory management

A 3PL may provide inventory management software alongside physical warehousing and distribute stock based on where orders are coming from. Many also offer kitting, assembly, or custom branded packaging.

Order management and fulfillment

A 3PL’s order management system (OMS) can track stock levels across warehouses and integrate with your own software, so you can maintain visibility into your company’s shipping and fulfillment.

Shipping, tracking, and returns

3PLs either work with established carriers or run their own fleets to support shipping and fulfillment options such as two-day delivery. They can also provide order and delivery tracking information. A full-service 3PL may also manage returns and exchanges.

International logistics

For international expansion, a 3PL with locations in multiple countries can help manage the logistics involved in international shipping.

Technology and software

Beyond physical fulfillment, many 3PLs give you software to monitor what’s happening inside the warehouse. This includes real-time order and inventory visibility, access to the 3PL’s WMS, and integrations with your ecommerce platform so stock counts and order statuses stay accurate.

How to choose a 3PL provider

Selecting a 3PL is an operational decision that can affect your logistics and customer service. Your evaluation should consider both performance data and the working relationship.Use these tips to find the right 3PL provider for your business.

Decide on 3PL selection criteria

First, figure out whether a 3PL is equipped to handle the volume your business needs. Narrow your list down by asking these questions:

• What service levels do you commit to for shipping speed, order accuracy, and inventory accuracy, and how are they defined in your service-level agreement (SLA)?
• What is your standard time to receive inventory and make it available to sell?
• What is your daily order-cutoff time for same-day shipping?
• What is the full fee structure, including all minimums?
• Which warehouse locations would handle our orders, and what delivery speed can we expect for most customers?

Shopify Fulfillment Network’s recommendation tool lets you compare and contact vetted 3PLs directly from your Shopify admin.

Ask about 3PL costs

Setup and ongoing costs vary by provider. Ask for a full list of costs before comparing providers. Your quoted price often won’t include value-added services like marketing inserts, gift wrapping, or special packaging, so you may also want to ask about those costs.

Set reporting and communication expectations

Ask how the 3PL communicates on new orders, shipping notices, returns, and inventory counts. You’ll also want to know what reporting the 3PL provides on things like delivery timeliness, accuracy, and shipping-related damages, as well as how it handles exceptions or urgent issues.

Determine delivery service levels

Confirm how the 3PL compensates for delays and whether a missed shipment results in a refund or credit. Also confirm whether packages are insured in storage and in transit.

Check for integrations

Confirm the 3PL integrates with your existing inventory, order, and warehouse management systems, either through a Shopify app, an API, or EDI and FTP file transfers. Also ask how inventory, order, and fulfillment data will stay in sync across those systems.

How 3PLs integrate with Shopify stores

3PLs connect to a Shopify store in one of two ways: through a prebuilt app such as Shopify Fulfillment Network (SFN) or a third-party app like ShipBob, or through a custom integration.

The Shopify Fulfillment Network app requires no technical integration. Shopify sets up the connection, linking the 3PL directly to your Shopify admin. Once connected, an order placed on a Shopify store sends its details automatically to the 3PL's system, which triggers picking, packing, and shipping without manual data entry.

By partnering with Flexport, SFN brings advanced logistics to your fulfillment process, including:

• Fast, nationwide delivery: Two- to three-day shipping across the US
• Data-driven network planning: Strategic product placement based on demand
• Simplified inventory management: Send stock to one location, and let Flexport handle distribution

Many approved 3PL apps can act on your behalf inside Shopify, marking orders as fulfilled, processing refunds, and updating stock counts and inventory moves through the warehouse. If you’re using an integrated 3PL, you can monitor fulfillment status and inventory levels directly from your Shopify admin, without switching between tools.

3PL providers without a dedicated Shopify app connect through an API or through EDI and FTP file transfers, which may require more setup. Whichever method you use, confirm that orders, inventory, and fulfillment status stay synchronized across systems.

*Based on a November 2025 survey of 500 Shopify merchants conducted in English across Australia, Canada, the United Kingdom, Ireland, New Zealand, and the United States. Respondents were established merchants with 2+ years on the platform. Results reflect the experiences of this specific sample and may not be representative of all merchants.