For many fractionals, the strongest first offer is a ninety-day operating engagement. Ninety days is long enough to create meaningful movement and short enough for a buyer to understand and commit to.

Thirty days is too short. It is barely long enough to understand the problem, let alone move it. A buyer will not see enough evidence that it is working to feel confident about the next phase.

Six months is longer than most buyers want to commit to without seeing initial proof. The buyer worries the work will expand, the cost will blur, urgency will fade, and the internal story will become hard to maintain.

Ninety days splits the difference. It is long enough to do real diagnostic work in the first phase, move something substantive in the second, and build confidence for what comes next in the third. It is short enough that the buyer can hold the vision of the engagement in their head and make the decision without too much internal bargaining. It is long enough that scope creep becomes less likely because the endpoint is clear and the rhythm is established.

Inside the ninety days, the buyer has certainty. Outside of it, there is optionality. You do not promise the next phase. You do not pretend ninety days will solve everything. You are clear that this is the first engagement and that what comes next depends on what the work reveals.