Letter of Intent vs Purchase Order: What Counts as Evidence

An LOI shows real interest from the person who signed it. A purchase order shows the buyer's organization ran its full approval process.

By Harinderpal Hanspal on January 2026. Updated October 2026

Not by itself. A technical champion can sign a letter of intent (LOI) at almost no organizational cost: no capital approval, no procurement review, no safety sign-off, no budget allocation. It expresses real interest and commits nothing.

A purchase order is different. It requires the buyer's organization to run its full approval process, and under our evidence standard that is the boundary between Benchmarked and Verified. An LOI from a champion rates Benchmarked: real support for the hypothesis, without confirmation. A purchase order that went through procurement rates Verified.

Many technology companies hold a portfolio of Benchmarked claims and call it traction. They find out the difference when an investor or a first enterprise customer asks for the evidence behind the pipeline slide.

In our experience, investors who know industrial markets price that difference. A list of pilot partners who liked the product no longer answers the question. They want to know whether a named economic buyer confirmed willingness to pay at a specific price, through a procurement path the buyer's own organization described.

More letters will not close the gap. Scored interviews with economic buyers in the target customer profile will.

Go deeper: The committee nobody mapped explains why LOIs and purchase orders come from different people, and What the data room cannot show covers how diligence tests them. See also the page for investors and the page for technology companies.