Guides

How 3PL billing works, how to check it, and what to do when a charge is wrong.

• 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.5 min read
• 3PL billing process: how warehouse billing worksHow the 3PL billing process works: how warehouses record billable work in the WMS, billing cycles and invoice types, why errors happen and what data to ask for.5 min read
• 3PL contract checklist: the clauses that decide your billWhat to look for in a 3PL contract before you sign: rate card, storage basis, carrier markup, minimums, dispute window, audit rights, liability and exit terms.6 min read
• 3PL cost per order: the formula, with a worked exampleHow to calculate fulfillment cost per order with a 3PL: the formula, what to include and leave out, a worked example and how an average hides billing errors.5 min read
• 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.6 min read
• 3PL invoice example: an annotated warehouse invoice sampleA 3PL invoice example with a summary page and itemized lines, explaining each section and charge type, what to check on each line and where errors hide.5 min read
• 3PL KPIs: 5 warehouse metrics to track, with formulas3PL KPI examples with formulas: order accuracy, on-time ship, dock-to-stock, inventory accuracy and billing accuracy, with published benchmarks and a scorecard.6 min read
• 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.7 min read
• 3PL shipping markup: how it works and how to check yoursHow 3PLs mark up carrier charges (percent, per-label fee or bundled), what your contract should say, and how to check the markup with a carrier cost column.5 min read
• 3PL storage billing: average vs peak and other basesHow 3PLs measure storage (average, peak, point-in-time, daily or cubic feet), why the basis changes your bill, and how to check it with a daily storage report.6 min read
• How to dispute a 3PL invoice and ask for a creditHow to dispute a 3PL invoice: find your contract's deadline, build the evidence, write a calm credit request, follow up and keep the relationship intact.6 min read
• Switching 3PLs: billing risks and an onboarding checklistHow to switch 3PLs without surprise charges: setup fees, transfer receiving, overlapping storage, final invoices and data export, plus a checklist.6 min read