Check every line of your 3PL bill against your contract and your Shopify orders.
Send us your warehouse rate card, three months of invoices and a Shopify order export. Within three business days you get a list of overcharges. Each one shows the invoice line, the contract rate and the order that proves it. The first audit is free.
| Charge | Order | Qty | Rate | Amount |
|---|---|---|---|---|
| Pick and pack, first item | #10482 | 1 | 3.25 | 3.25 |
| Additional item | #10482 | 3 | 0.85 | 2.55 |
| Order #10482 had 2 items, and your rate card says $0.65 each. Should be $1.30. Over by $1.25 | ||||
| Pick and pack, first item | #10477 | 1 | 3.25 | 3.25 |
| Order #10477 was cancelled on Sep 3, before it shipped. Over by $3.25 | ||||
| Pallet storage | 46 | 18.00 | 828.00 | |
| Your contract bills the month's average, which was 38 pallets. Over by $144.00 | ||||
What we check
Warehouses bill hundreds of lines a month, each in their own format, and few brands have time to check them. We read the bill whatever its layout, then recalculate each line from your contract and your own order data.
Rates and fees
- Rates that don't match your signed rate card, including old rates after you renegotiated
- Charges your contract doesn't include
- Packaging billed when your contract includes it, and monthly minimums charged twice
Orders
- Pick fees for more items than the order had
- Fees for orders cancelled or refunded before they shipped
- The same order or service billed twice, on one invoice or across months
Storage and receiving
- Storage above what your inventory could fill, or billed on peak when your contract says average
- Receiving fees with no matching inbound shipment
Shipping charged through your warehouse
- Carrier charges marked up more than your contract allows
- Residential and address-correction surcharges that don't apply
- Billed weights far above what your products weigh
How it works
You stay in charge of your warehouse relationship. We never contact your 3PL.
You upload
Your rate card or contract, the last three monthly invoices and a Shopify order export. PDF, Excel or CSV, in whatever layout your warehouse uses.
We check every line
Software reads the documents and recalculates each charge. A person reviews every finding before you see it, so you only get overcharges we can prove.
You send the credit request
The report includes the evidence for each overcharge and a ready-to-send credit request. You decide what to send.
Check your bill yourself
Guides and free calculators for the most common 3PL billing questions.
- 3PL invoice audit: a step-by-step method and checklistHow to audit a 3PL invoice line by line: the documents you need, nine checks that catch common overcharges, and how to write up findings before the deadline.Guide
- 3PL billing errors: common overcharges and how to spot themThe 3PL billing errors to look for, from old rates and canceled orders to storage basis and shipping markup, with a simple test for spotting each one.Guide
- 3PL pricing explained: how much a 3PL costs, fee by feeHow much does a 3PL cost? Every fee line a brand pays, the main 3PL pricing models, and published 2026 ranges for setup, storage, pick and pack and more.Guide
- 3PL cost calculator: monthly cost and cost per orderFree 3PL cost calculator. Enter your orders, rates, storage and fees to see your monthly fulfillment cost, cost per order and any monthly minimum top-up.Free calculator
- Storage fee calculator: check your 3PL pallet storage billFree pallet storage fee calculator. Paste daily pallet counts or type an average and peak to see how many pallets your contract allows and the overcharge.Free calculator
- 3PL credit request email: two billing dispute templatesTwo 3PL billing dispute email templates to copy: a first credit request and a polite follow-up, plus what evidence to attach and when to send.Guide
Price
The first audit is free. No card, no commitment.
After that, monitoring is $149 a month. We check every new invoice as it arrives and draft the credit requests for you. If we find less than $149 in overcharges in a month, that month is refunded. Cancel any time.
Your documents
Your contract and invoices are confidential. Files are encrypted when stored, only used for your audit and deleted after 90 days unless you become a customer. You can ask for deletion at any time. How we handle your documents
Questions
- Which warehouses do you work with?
- Any 3PL that sends a PDF, Excel or CSV invoice. We're best suited to brands shipping between 500 and 5,000 orders a month.
- Do you contact my warehouse?
- No. You get the findings and a draft request, and you decide what to send.
- What if my contract doesn't allow claims on old invoices?
- Many contracts set a dispute window of a few weeks. The first audit still shows how often your bill is wrong, and monthly monitoring catches each error while you can still claim it.
- Who are you?
- 3PL Checker is built by Byteloom (Pvt) Ltd, a software company in Sri Lanka. Write to [email protected] with any question.
Start a free audit
Tell us about your store. On the next page you get a private link for uploading your documents.