When to Start Using a 3PL
Quick answer
Most published 3PL benchmarks put the tipping point at around 500 orders a month. Selery Fulfillment calls 500–1,000 orders a month the tipping point and 100–500 a gray zone; Red Stag Fulfillment cites 500 a month as a common minimum viable volume. But volume alone doesn't decide it. Switch when your fully loaded in-house cost per order (labor, space, packaging, postage, errors) is higher than a 3PL's quote on your real orders, or when fulfillment is blocking growth. Some 3PLs take brands far smaller: eFulfillment Service publishes no order minimum.
Key takeaways
- Selery Fulfillment's benchmark: under 100 orders a month is too early for most brands, 100–500 is a gray zone, and 500–1,000 is the tipping point.
- Red Stag Fulfillment, citing a 2025 survey of 600+ warehouses, puts minimum viable volume at 500 orders a month and typical mid-market clients at 3,000–5,000.
- Those benchmarks come from 3PLs, which have an interest in the answer, so run your own cost comparison.
- Compare fully loaded in-house cost per order, including your own time, against a 3PL quote on your real order data.
- Minimums vary by provider: Simpl bills a $750 monthly minimum; eFulfillment Service publishes none.
How many orders a month before you should outsource fulfillment?
There's no industry standard, only vendor benchmarks. What 3PLs publish:
| Source | Benchmark |
|---|---|
| Selery Fulfillment | Under 100/month too early for most; 100–500 gray zone; 500–1,000 tipping point; 1,000–10,000 sweet spot for pricing |
| Red Stag Fulfillment (citing a 2025 survey of 600+ warehouses) | 500/month common minimum viable volume; 500–5,000 "growth tier"; 3,000–5,000 typical mid-market client; average minimum monthly spend $517 |
| Fulfyld | 500–5,000+ orders/month cited as its optimal range |
| Simpl Fulfillment | Targets 50 to 5,000+ orders/month |
| Thrive 3PL | Serves 200–20,000 orders/month |
Read them as "where 3PL pricing starts to work", not as rules. A brand with 200 orders of complex kits may be ready; a brand with 800 single-item orders out of cheap space may not be.
How do you calculate whether a 3PL is cheaper than doing it yourself?
Work out your fully loaded in-house cost per order for the last three months:
| Cost | How to count it |
|---|---|
| Labor | Hours packing, receiving and doing returns x a real hourly rate (include your own time) |
| Space | Rent or the share of your space used for inventory and packing |
| Packaging | Boxes, mailers, tape, fill, inserts |
| Postage | What you actually paid per label |
| Software | Shipping software, scales, printers |
| Errors | Reships, refunds and credits from mistakes |
Divide by orders shipped. Then get two or three 3PL quotes on the same orders (see how to choose a 3PL) and compare the total. Postage is often where a 3PL wins, because it may have better carrier rates or a second warehouse closer to your customers.
What are the signs you should hire a 3PL now?
You've probably waited too long if two or more of these are true:
- Orders are piling up and you're missing your own ship-by promise.
- You spend more than a day a week packing. Selery's framework uses 20+ hours a week as a trigger.
- Mistakes (wrong item, missed insert) are showing up in reviews.
- You can't take a day off without orders stopping.
- You've turned down wholesale orders or a marketplace because you can't handle the volume.
- Peak season means temp staff, rented space and chaos.
- Your customers are mostly on the other coast and ground shipping takes a week.
When should you not switch to a 3PL yet?
Hold off if:
- You ship a handful of orders a week and the monthly minimum would exceed your fulfillment spend. For example, Simpl bills a $750 monthly minimum as pay-the-difference.
- Your product changes weekly (new SKUs, custom work, personalization) and every change would become a 3PL project fee.
- Your packaging and unboxing is your product, and you haven't documented it yet.
- Your margins can't absorb per-order fees before you've fixed pricing.
If you're small but want out of the garage, look at 3PLs that publish no minimums, such as eFulfillment Service or OC3PL's startup offering, or at a hybrid like Saltbox, which rents warehouse space from $500 a month with optional pick-and-pack.
What changes in your week after you switch?
Outsourcing fulfillment doesn't remove the work; it changes it. Expect your week to look like this:
| Before (in-house) | After (3PL) |
|---|---|
| Packing orders daily | Reviewing an exceptions queue (address errors, unmapped SKUs, holds) |
| Counting stock by eye | Reconciling the 3PL's on-hand report against your records monthly |
| Buying labels | Auditing the monthly invoice line by line |
| Receiving boxes at the door | Booking inbound shipments with an advance shipping notice (ASN) |
| Fixing mistakes yourself | Filing tickets and tracking SLA credits |
| Improvising at peak | Sending forecasts weeks ahead so the 3PL can staff up |
Budget a few hours a week for this. The brands that are unhappy with their 3PL usually stopped doing these checks, and problems like inventory variances and invoice errors built up unnoticed. See 3PL inventory discrepancies and the 3PL contract guide for what to watch.
What should you do before your first 3PL?
Get these ready before you ask for quotes. They'll make the quotes accurate and the move faster:
- Clean SKU data: one barcode per variant, weights and dimensions for every SKU.
- 90 days of order data with ship-to zip, weight and items.
- Packing rules written down: box selection, inserts, gift notes.
- Returns policy the 3PL can apply without asking you.
- Inventory count you trust, so the first receiving has something to compare with.
Then follow the 3PL onboarding checklist.
Frequently asked questions
When should I start using a 3PL?
When a 3PL's quote on your real orders beats your fully loaded in-house cost, or when fulfillment is limiting growth. Vendor benchmarks put the tipping point at around 500 orders a month.
Can I use a 3PL with 100 orders a month?
Yes, if you choose a provider without a high minimum. eFulfillment Service publishes no order minimum, and Simpl targets brands from 50 orders a month but bills a $750 monthly minimum.
Is a 3PL worth it for low-priced products?
Only if the per-order fee plus postage fits your margin. For $10 orders, compare the 3PL's total cost per order with your contribution margin before switching.
How long does it take to move to a 3PL?
It varies by provider and complexity. Simpl Fulfillment, for example, cites a 5–7 day onboarding. Allow extra time for integrations and your first inbound shipment.
What's the biggest mistake when switching to a 3PL?
Comparing pick fees instead of total monthly cost on your real orders, and not documenting packing rules before go-live.