The Pre-Sign 3PL Checklist: Questions That Separate Operators from Salespeople

Posted on by Mike Fuhrman

Most 3PL relationships do not fail on day one. They fail somewhere between month four and month nine, when the first real peak hits, the first chargeback lands, or the first audit exposes inventory variance the dashboard never flagged. By then the contract is signed, the integration is built, and switching costs are punishing.

The questions you ask before signing decide which side of that timeline you end up on. The ones below are not the polite questions a sales engineer is happy to answer. They are the operational, financial, and contractual questions that reveal whether the provider in front of you is built to handle your business or built to win the deal.

Capacity and operations

Sales decks talk about square footage. Operators talk about throughput. The difference matters.

  1. What is your current utilization rate at the facility I would be assigned to? Anything above 85 percent means surge capacity is theoretical. Anything below 50 percent on a building that has been open more than a year means something is wrong with the customer base or the location.
  1. How many SKUs and how many orders per day does the largest customer in this facility run? You want to know whether you would be the largest tenant, the smallest, or somewhere in the middle. Each position has tradeoffs. Being the largest means priority but also exposure when their team is built around your volume. Being the smallest means you compete for attention every day.
  1. What is the variance between your stated peak capacity and your last actual peak? The honest answer is rarely flattering. Providers that have hit the ceiling will tell you about the throttling, the temp labor scramble, the weekend overtime. Providers that have not been tested will give you a confident number with no story behind it. Confident numbers without stories are warnings.
  2. What is your inventory accuracy rate, measured how, and audited by whom? Cycle-count accuracy of 99.5 percent sounds great until you ask whether the count is unit-level or location-level, whether it covers full SKU rotation in a quarter, and whether anyone outside the warehouse signs off on the number. Ask for the audit methodology in writing.
  3. What is your shrinkage policy when the count does not match? Some providers absorb variance under a fixed shrink allowance. Some pass everything back to the customer. Some have a tiered structure that quietly favors the provider once you cross a threshold. Read the clause, then read it again with a forensic accountant.

Pricing and cost transparency

The headline rate card is rarely where the money is.

  1. Walk me through the last invoice for a customer roughly my size. Line by line. You want to see accessorials, fuel, fees, allocations, and any “minimum monthly” charges. If the answer is that invoices are confidential, ask for a redacted version. A provider that cannot show you the structure of an invoice is hiding the structure of an invoice.
  1. What are your accessorial charges, and which are negotiable? Pallet repositioning, label changes, kitting, returns processing, retail compliance, hazmat handling, oversize, expedited inbound, after-hours receiving. Each of these can be a single line item that doubles your effective rate. Get the full schedule before you sign, not after.
  1. How do you handle annual price increases? Some contracts have a fixed cap. Some are tied to CPI. Some are tied to a labor index that has nothing to do with your industry. Some are silent, which means whatever the provider sends you in year two is the new price. Push for a cap and a notice period.
  1. What is the minimum monthly storage or activity charge? If your business is seasonal, this clause can quietly cost you tens of thousands of dollars in your slow quarter. If your business is growing, it locks in a floor that will look small now and irrelevant in two years. Either way, know the number.
  1. How do you charge for returns? Returns are where DTC margins die. Per-unit inspection, per-unit grading, per-unit restocking, disposal fees, plus the warehouse labor minimum. Get a worked example using your actual return rate, not a theoretical one.

Technology and integration

The WMS demo will look great. The integration to your stack is what matters.

  1. What WMS do you run, what version, and when was the last upgrade? Custom-built WMS platforms are a yellow flag unless the provider has serious in-house engineering. Stale versions of commercial WMS platforms are a different yellow flag. You want a current, supported, well-known system.
  2. Do you support real EDI, real API, or a flat-file drop? A flat-file drop in 2026 is not an integration. It is a manual process with extra steps. Ask for documentation of the API endpoints or EDI transaction sets they actually support, not the ones the slide deck claims.
  1. How long does a typical integration take from kickoff to live, and who pays for changes after go-live? The first number tells you whether their tech team is real. The second tells you whether you will be billed every time your ERP changes a field name.
  1. What inventory and order data can I see in real time, and what is on a 24-hour delay? Some providers expose live inventory. Some expose end-of-day snapshots. The difference matters when you are trying to prevent overselling on a marketplace.
  1. What happens to my data if I leave? Get the answer in writing. Format, transfer method, timeline, cost. If the answer is hand-wavy, the data extraction at the end of the relationship will be hand-wavy too.

Transportation reality check

This is the section where most 3PL conversations get vague. Push through the vagueness.

  1. Do you operate your own fleet, broker the freight, or both? In what mix? There is no wrong answer, but there is a right answer for your shipping profile. A heavy-LTL outbound program needs a different transportation posture than a parcel-dominant DTC program. Mismatch shows up as surprise rates and missed pickups.
  1. What lanes do you have density on, and what lanes are you sourcing every time? Density equals predictable rates. Sourced lanes equal market exposure. If your highest-volume lane is a sourced lane for the provider, your rate is going to move with the spot market whether they tell you or not.
  1. How do you handle peak-season transportation capacity? The right answer involves named carrier commitments and tested surge plans. The wrong answer is “we have great relationships with our carriers.” Everyone says that in March. Ask how it played out in November.

This is where working with a vetted 3PL with integrated warehousing and transportation materially changes the conversation. When the same operator owns both the dock door and the lane, transportation is not a finger-pointing exercise during exceptions. It is one team running one plan. That structural alignment is hard to manufacture after the fact, which is why it is worth asking about before you sign.

  1. Show me a freight invoice from last peak. Same logic as the warehouse invoice. The accessorials are where the spread lives. Detention, layover, reconsignment, residential delivery, lift gate, limited access, redelivery. Each line is a negotiation.

Performance and SLAs

The contract SLA is rarely the SLA that matters.

  1. What SLAs do you measure, how often do you report them, and what is the penalty when you miss? Inbound dock-to-stock, order cut-off compliance, on-time-in-full, shipping accuracy, inventory accuracy, returns processing time. If a metric is in the contract without a defined penalty, it is decorative.
  2. Show me your SLA performance over the last twelve months for a customer my size. Aggregate numbers across the whole facility hide the bad months. Customer-level numbers tell the truth. A redacted view is fine.
  3. What is your escalation path when something goes wrong on a Tuesday afternoon? You want named roles, response time commitments, and a backup if the named role is unavailable. “Email your account manager” is not an escalation path. It is a queue.
  4. How many active customers does my account manager handle? Above fifteen, you will struggle for attention. Above twenty-five, you will only get attention when something is broken.

Implementation and exit

The first ninety days and the last ninety days deserve as much contract attention as the middle.

  1. What does the implementation timeline actually look like, and what is the parallel-run period? Six to twelve weeks is normal for a meaningful program. A two-week implementation either means the provider is cutting corners or your business is simpler than you think. A twenty-week implementation means there is something you have not surfaced yet about your data or your volume.
  2. What are the termination terms? Notice period, termination-for-convenience clause, termination-for-cause definition, transition support obligations, final invoice reconciliation. The termination clause is the clause you negotiate hardest before signing because you have the most leverage when they want the deal.
  3. Will you commit to a transition-out SLA? If you leave, you need them to ship orders, support API calls, and release inventory at the same standard you signed up for. Without a written transition-out SLA, the last sixty days of a 3PL relationship can be ugly.
  4. What is your customer churn rate, and why do customers leave? Some providers will answer this honestly. Some will dodge. Either response is information. The honest dodge is “we do not share that number.” The dishonest dodge is “we never lose customers.” If you hear the second one, walk.

The site visit

If the provider has not invited you to walk a building before signing, that is the entire answer to the question of whether they want a partnership or a contract.

When you visit, look for:

  • Housekeeping and aisle clarity. A messy floor is a leading indicator of every other operational problem.
  • Labor stability. Ask the supervisors how long they have been with the company. Ask three of them. Compare answers.
  • Pick-path logic. Does the WMS pick path make sense given the slotting? Or is the team walking the same aisle five times an hour?
  • Dock activity. Are inbound and outbound flows separated? Are there bottlenecks at receiving that look like a permanent state?
  • Tenant mix. Look at the other customers’ product on the floor. Are they similar to yours in handling profile? Or are you about to be the one fragile, premium, or compliance-heavy customer in a building built for bulk?

A two-hour walk-through with a senior operations leader will tell you more than ten hours of slide decks.

What “yes” looks like

You are not looking for a provider that has clean answers to all twenty-seven questions. Operators with clean answers to all twenty-seven questions are usually selling a story. You are looking for a provider that has honest answers to most of them, real evidence behind the strong claims, and a measured response when they have to admit something is still being built.

Conviction without evidence is a sales tell. Evidence without polish is an operator tell.

The contracts that survive the first peak are the ones where both sides knew what they were getting into before anyone signed. The questions above are the cheapest insurance you will ever buy on a multi-year warehousing and transportation commitment.