Reverse KPI calculation for global marketing budgets — work backward from revenue goal to required spend. Universal math, currency-specific per region (US/EU/SEA/LATAM). 3-scenario sensitivity analysis (pessimistic/realistic/optimistic). Trigger: 'reverse KPI', 'budget calculation', 'KPI breakdown', 'marketing budget plan', 'campaign budget'.
SkillScore68Maintained
Automatic
◆Marketing & Content pack
Last verified 8/19/2026
What it changes
Passed 15 of 22 test cases with the skill, and 6 of 22 without it.
Without skill27%
With skill68%
Checks it passed that the model alone missed
Asks no more than 4 initial diagnostic questions.
Allocates 10-15% of total budget specifically to retargeting campaigns.
Allocates 60-70% of total budget to primary proven acquisition channels.
and 13 more in the full report
10 fixed5 passed either way6 still failing1 broke
Pass-rate lift
+41 pp
Tokens
+90%
Agent turns
0%
Response time
-6%
Model gemini-3.6-flashMeasured 8/19/2026v115 of 22 cases passed with skill
Tokens, turns and time describe resource use, not a dollar price.
See it in action
One of 10 test cases the skill fixed. Same model, same prompt, with and without the skill.
1 of 10
Prompt
Our European e-commerce online store has a fixed budget of €40,000 for next quarter's launch. With an average order value around €85 and fixed overhead of €12,000, we need to know what revenue we can realistically expect. Please run a forward calculation from our spend to project expected orders and revenue across pessimistic, base, and optimistic cases. Additionally, outline how our ad spend should be distributed across campaign phases, recommend a channel split strategy, and analyze our break-even timeline.
What was checked, without and with the skill
Checked
Without skill
With skill
Calculates expected volume sequentially using CPM, impressions, click-through rates, and conversion percentages rather than arbitrary target customer acquisition costs.
Missed
Passed
Categorizes break-even risk level as safe if break-even orders are under 50% of expected orders, tight between 50% and 80%, or risky above 80%.
Missed
Passed
Distributes phased launch budget strictly as 15% Teaser, 20% Soft launch, 40% Full launch, and 25% Maintenance.
Missed
Passed
case-02 · gemini-3.6-flash · 8/19/2026 · answers are capped and redacted
What's inside
The instructions your model reads when the skill loads.
SKILL.md266 linessingle file
Reverse KPI Calculation (Global)
Calculate marketing budget by working backward from revenue goal — or forward from available spend to expected revenue. Universal math; currency and benchmark numbers vary per region (US/EU/SEA/LATAM).
For newbies — Read this first
If you've never run a reverse KPI calc:
Reverse KPI = working backward from a goal. Instead of "I'll spend $5K and see what happens," you say "I want $50K in revenue, so I need X impressions, Y leads, Z customers — therefore the budget is $W."
It works in two directions:
Backward: Revenue target → required spend (when you have a goal)
Forward: Available spend → expected revenue (when you have a budget)
You always run 3 scenarios. Pessimistic (worst case), Realistic (base case), Optimistic (best case). One number is dangerous — three numbers force you to stress-test.
Conversion rates are the leverage. Small changes in conversion (e.g., 50% → 55%) cascade up the funnel and change your budget significantly.
Currency matters. A 5% margin in USD is different in EUR, BRL, or VND. Always pick the right region variant for your benchmarks.
Don't trust round numbers. "100 leads" is suspicious — real funnels produce odd numbers like 87 or 213.
Time horizon affects budget. A $50K monthly target needs different planning than a $50K annual target. Always specify the period.
Step 0 — Read context + select region variant
Before calculation:
Read .agents/product-marketing-context-global.md — get product, AOV, region, currency, target market.
Pick region variant for benchmark conversion rates and CPM/CPL: