How to Onboard a New Client in 72 Hours

The first 72 hours of a consulting engagement set the shape of everything that follows. Not the first month or the first week. The first three days. Spend them on preliminary research and scheduling a second call, and you have already signaled that you work on a slow cadence. Spend them delivering something real, and you have set a completely different expectation.

The sequence I use works across clients at very different scales. It worked for one client, a Netherlands-based operation I onboarded from three transcripts. It worked for another, a CPG brand preparing for Kroger expansion. And it held for a third, a $200M business with seven global warehouses and a supply chain crisis already in motion before I joined. The framework itself does not change much. The complexity scales up, but the moves stay the same.

The discovery call

The first call has one job: understand the operation as it actually exists, not as the client describes it.

Clients describe the ideal-state version of their supply chain. “We have inventory in two warehouses and we restock weekly.” In practice they have inventory in two warehouses plus a container on the water plus some stock at a prep center they forgot to mention, and the weekly restock is more of a “when we remember to check.” Every discovery call I have run has uncovered more complexity than the client’s initial description suggested.

The questions that surface the real picture: How many SKUs are active? How many channels? Where is inventory physically located right now? When did you last run out of stock on your best seller? What tools are you using to track POs? Have you had a supplier hold inventory due to a payment dispute?

That last question is diagnostic. If the answer is yes, you have immediate visibility into a financial operations problem that was never in the brief.

By the end of the discovery call, the goal is a shared list of what the client has, what they are missing, and what is most at risk. The supply chain complexity audit happens in this call, not in a separate session.

The master positioning sheet

This is the first deliverable, and it goes out before the first review call, not after it.

The sheet shows: every active SKU, on-hand inventory by location, open purchase orders with expected arrival dates, projected demand for the next 60 to 90 days, and days of supply per SKU. For the CPG brand, this covered three snack pack variants with Kroger retailer forecasts layered in. For the $200M business, it meant mapping inventory across seven warehouses against an FBA depletion curve with a hard deadline, the point where the tariff made replenishment impossible.

Most clients have never seen their own data organized this way. They know they have inventory. They just do not know exactly how much, or where, or how long it will last. Showing them that view in the first session is the fastest way to establish credibility, not because it looks impressive but because it is useful right away, today, for decisions they have to make this week.

The sheet also surfaces the first priority list. When you can see days of supply across all SKUs, the items closest to zero are visible instantly. The first priority list comes from that sheet, not from the client telling you what they think is most important.

The first priority list

By hour 72, there should be a shared list of the three to five things most at risk or most actionable in the next 14 days. Not a comprehensive account audit or a full operations review, just three to five items with named owners and specific timelines.

For the $200M business, the first priority was clear before the discovery call even finished: a 170% tariff on Chinese-origin appliances, inventory projected to run out by late August, and a Thailand production pivot that had to start immediately. The priority list wrote itself out of the complexity audit.

For the CPG brand, the priorities were different: inventory positioning for Kroger onboarding, snack pack variant tracking, and a PO process running through Trello in a way that was getting unmanageable as volume grew. All of it was visible within the first session.

What “onboarded” means

The client is onboarded when two things are true. They know you understand their operation, specifically enough to identify what is at risk. And both parties have a shared, written view of what the client has and when they will run out.

The second condition is the practical one. “When they will run out” is not a figure of speech. It is a date, by SKU, on the positioning sheet. When everyone knows the inventory position, restocking happens with lead time instead of in crisis mode. When nobody knows it, stockouts arrive as surprises.

The gap between a three-transcript engagement and a $200M deal is mostly the volume of complexity, not the structure of the onboarding. The difference is just scale: more SKUs, more warehouses, more suppliers, more risk factors. The sequence is the same: discover the real operation, build the positioning sheet, identify the first priorities, and hand the client a shared view of their situation before the end of day three.

Everything after those three days builds on that shared view.