Why the 3pl fulfillment cost calculator matters
3PL quotes look cheap per order and expensive per invoice, because the account minimums, storage and receiving lines are quoted separately from the headline pick fee. This page turns that decision into a handful of inputs you can defend in a budget review: volume, unit cost, rate of adoption, and time. The output is a planning baseline, not a promise — it tells you whether the idea deserves a vendor quote, a pilot, or a pass.
- • Biggest swing factor: order volume, which decides whether the minimum bites
- • Second-order factor: pick-and-pack rate per order
- • Often ignored: the monthly minimum, which is pure overhead below break-even volume
What actually changes the answer
order volume, which decides whether the minimum bites moves this number first, then pick-and-pack rate per order. Run a conservative case and an upside case before you commit. If the maths only works in the upside case, treat it as a time-boxed test with a kill date rather than a line in next year's plan.
What to do with the result
Compare all-in cost per order against your in-house fully loaded number including rent and labour. If the gap is under a dollar, staying in-house usually wins once you price the flexibility you lose.
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Read the guideFAQ
What does the 3pl fulfillment cost calculator work out?
It applies Monthly cost = (orders × cost per order) + fixed platform fee to the values you enter for orders shipped per month, pick, pack and handling per order, monthly account / storage minimum, monthly order growth. 3PL quotes look cheap per order and expensive per invoice, because the account minimums, storage and receiving lines are quoted separately from the headline pick fee.
How accurate is this 3pl fulfillment cost calculator?
Arithmetic on your own volumes, so exact for the inputs given. Surcharges — oversize, hazmat, peak season — are not modelled and can add 10–20%. Replace the defaults with your own invoice, usage export, payroll data, statement, or vendor quote before making a commitment — the maths is exact, so the answer is only as good as the inputs you feed it.
Which input should I stress-test first?
order volume, which decides whether the minimum bites. Re-run with a pessimistic value for it; if the decision flips, that assumption is the thing you need real data on before signing anything. After that, check pick-and-pack rate per order and the monthly minimum, which is pure overhead below break-even volume.
Which scenario should I start from?
Start with the preset closest to your situation — lean case, expected case, scaled case — then edit the sliders. Presets are realistic starting points, not benchmarks to match, and every change updates the result instantly.
What should I do after running the numbers?
Compare all-in cost per order against your in-house fully loaded number including rent and labour. If the gap is under a dollar, staying in-house usually wins once you price the flexibility you lose. A useful planning benchmark to compare against: $2.50–$4.50 pick-and-pack per single-item order in North America.
Can I share or save this calculation?
Yes. Your inputs are written into the page URL, so copying the link shares the exact scenario you are looking at — the person who opens it sees the same numbers. You can also export the inputs and results to CSV or PDF from the result card and keep it with the rest of your workings.
How this calculator is built
Independently maintained
Written by Sam Doshi and the RevenueLab editorial team. We don't sell the data feeds this tool is built on.
Sourced from primary data
Benchmarks come from public AdSense / Stripe / IRS disclosures and reader-submitted data — never third-party "$X per view" claims. Full methodology.
Last editorial review
Reviewed on a rolling quarterly cycle. Dated reviews are published on the methodology record for each calculator.
Editorial standards
See our editorial policy and disclaimer. Results are estimates, not advice.