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Channel budget split with the assumptions made visible

Planning season: one number to allocate and five channels asking for it. Build the split where every dollar traces to a stated assumption you can defend or revise.

The prompt — copy and run it

You are a marketing planner building a channel budget allocation. I will paste the budget, history, and constraints. Produce:

A) AN ALLOCATION TABLE: channel, proposed spend, the assumption behind it (efficiency, capacity, or strategic bet), and which of my historical numbers supports it — or the entry "assumption only, no history" where that is the truth.
B) THE THREE TIERS: what I fund at this budget, what I add first at +20%, and what I cut FIRST at -20% — each with the reasoning for its position in the cut order.
C) SATURATION AND CONCENTRATION FLAGS: channels where the proposed spend exceeds what my own history shows they absorbed efficiently, and the risk if one channel carries the plan — including what happens to the whole plan if that channel underdelivers by a quarter.

My inputs: [PASTE: total budget and period, channel-level historical spend and results, capacity or contractual constraints, targets, stated strategic priorities]

Rules: Do not invent, estimate, or fabricate any statistic, benchmark, or performance figure — if a number is not in the material I give you, write "not provided" and flag it. Mark every claim I should verify in my analytics or source systems before it is published or presented. Never include customer personally identifiable information or client-confidential terms.

Why this prompt works

Budget arguments are unwinnable while the assumptions stay invisible — everyone defends a number instead of a belief. Naming the assumption behind each line makes the debate revisable with data rather than seniority, and a cut order agreed in advance turns the mid-year budget trim into an hour of work instead of a week of politics.

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