What Is 3PL Fulfillment and When to Outsource Your Warehouse
Basics4 minInnovialabs editorial team
In short
3PL fulfillment means an outside operator stores your goods and picks, packs and ships every order for a per-operation fee; it pays off when your own warehouse limits growth or sits idle.
3PL in a nutshell
A 3PL (third-party logistics) provider takes over the warehouse side of your business. You ship goods to its warehouse, connect your store or marketplace accounts to its system, and from then on it picks and ships every order itself.
You do not pay for warehouse rent and staff salaries — you pay per operation: storage, each picked item, packing, shipping. Costs rise and fall together with sales volume.
What a fulfillment provider does
- Receiving. Counts the inbound shipment, checks it against documents and for defects, labels items and puts them away into bins.
- Storage. Keeps goods in addressed locations and tracks stock in its WMS (warehouse management system).
- Picking. Receives an order from your store and picks the items.
- Packing. Packs to your requirements: box, mailer, inserts, branded materials.
- Shipping. Hands the parcel to a carrier or delivers to a marketplace warehouse, and returns a tracking number.
- Returns. Receives returns, inspects them, restocks sellable items or writes them off.
Many providers also offer kitting, labeling, product photography and inbound shipments to marketplaces.
How pricing is structured
Exact rates differ by provider, but the structure is usually similar:
| Item | What you pay for |
|---|---|
| Receiving | Per unit, carton or pallet received |
| Storage | Per pallet, bin or cubic volume per day or month |
| Picking | Per order plus per additional item |
| Packing | Materials and labor, sometimes separately |
| Shipping | Carrier rate, sometimes with a markup |
| Returns | Per unit processed |
| Other | Onboarding, integration, monthly minimum |
Compare providers not by a single rate but on your real order profile: take last month's orders and calculate what that month would have cost with each provider's price list.
Signs it is time to outsource
- Order volume grows faster than you can hire and train warehouse staff.
- Seasonal peaks: the warehouse sits idle in normal months and cannot cope during peaks.
- Picking errors and late shipments start showing up in reviews.
- Selling on several channels — your site and marketplaces — makes a single stock count hard to maintain.
- Entering a new region where you need stock closer to customers.
- Founders and the team spend time on boxes instead of product and marketing.
When to keep the warehouse in-house
- Very few orders: onboarding fees and a monthly minimum may not pay off.
- Unusual goods: bulky, fragile, special storage conditions, made-to-order assembly. Not every 3PL handles these.
- A wide catalog with slow turnover: many SKUs that sit for months, so storage eats your margin.
- Packaging is part of the product: if hand-made gift wrapping matters to the brand, check whether the provider can reproduce it.
What to check before signing
- Which WMS the provider uses and whether there is a ready integration or API for your CMS, back-office system and marketplaces.
- How often stock levels sync to your site, so you do not sell what is not there.
- The cut-off time for same-day dispatch.
- SLA and liability: what happens on a picking error, loss or damage.
- Reporting: can you see stock, movements and order statuses online.
- How to exit the contract and take your goods back.
Common mistakes
- Choosing by the lowest storage rate and ignoring picking costs relative to your average order.
- Moving during peak season: migration and integration are best done in a quiet period.
- Not setting up stock sync and ending up selling items that are not in the warehouse.