ProMarketing · Simulator
Ad Spend Saturation Simulator
See CAC rise as you scale ad spend.
Assumptions
CAC at top budget
$60
Customers at top
994
Top budget
$60,000
| Monthly Budget | CAC | Customers |
|---|---|---|
| $10,000 | $30 | 333 |
| $20,000 | $35 | 580 |
| $30,000 | $40 | 756 |
| $40,000 | $46 | 877 |
| $50,000 | $52 | 953 |
| $60,000 | $60 | 994 |
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Built by The Crimson Bench · Educational model, not financial advice
About the Ad Spend Saturation Simulator
Model how customer acquisition cost climbs as you push budget higher — the diminishing returns every marketer eventually hits.
It's built for directional planning: change any assumption and watch the whole projection move, the way a seasoned operator pressure-tests a plan before committing capital. Everything is computed live in your browser — nothing is sent anywhere.
How the Ad Spend Saturation Simulator Works
The model takes 4 assumptions and returns 3 headline metrics plus a full breakdown. Here is exactly what goes in and what comes out — no black box.
The Inputs
| Assumption | Example value |
|---|---|
| Starting monthly budget | $10,000 |
| Budget step | $10,000 |
| CAC at starting budget | $30 |
| CAC rise per step | 15% |
Worked Example
Every figure below is produced by the live model using the example assumptions above. Change any input in the simulator to see your own numbers.
CAC at top budget
$60
Customers at top
994
Top budget
$60,000
| Monthly Budget | CAC | Customers |
|---|---|---|
| $10,000 | $30 | 333 |
| $20,000 | $35 | 580 |
| $30,000 | $40 | 756 |
| $40,000 | $46 | 877 |
| $50,000 | $52 | 953 |
| $60,000 | $60 | 994 |
The Operator's Read
Every channel saturates — CAC climbs as you exhaust the cheap audience. The art is scaling until CAC approaches your max allowable, then opening a new channel rather than overpaying the old one.
Assumptions & Limitations
- •The model is deterministic: it projects your inputs forward with clear arithmetic, not a Monte-Carlo or probabilistic forecast. It shows one scenario at a time — run several to bracket a range.
- •Defaults are illustrative benchmarks, not your business. Replace every field with your real numbers before drawing conclusions.
- •It abstracts away taxes, financing, seasonality, and one-off events unless a field explicitly captures them. Treat the output as a directional estimate.
- •This is an educational tool, not financial, investment, tax, or legal advice. Validate real decisions with a qualified professional.
Frequently Asked Questions
What does the Ad Spend Saturation Simulator calculate?
Model how customer acquisition cost climbs as you push budget higher — the diminishing returns every marketer eventually hits. It takes 4 assumptions — Starting monthly budget, Budget step, CAC at starting budget, CAC rise per step — and returns CAC at top budget, Customers at top, Top budget, along with a full projection table you can export.
How do I use the Ad Spend Saturation Simulator?
Enter your own figures in the input fields above — Starting monthly budget, Budget step, CAC at starting budget, and the rest. The model recalculates instantly and shows the resulting CAC at top budget and full breakdown. No sign-up needed to run it.
Is the Ad Spend Saturation Simulator free?
Yes — you can run the simulator and see the headline results for free. Toolkit Pro unlocks the full projection table, Excel/PDF export, saved scenarios, and AI analysis: $180/mo, $1,728/yr, or unlock any 3 simulators for $20.
What's the difference between this and a free calculator?
A calculator answers one question. This simulator models the full picture — multiple linked assumptions, a projection table, and scenario comparison — the way an operator would build it in a spreadsheet, but instantly.
Who built the Ad Spend Saturation Simulator?
The Crimson Bench's Ivy League-educated operators — the same people we deploy into C-suites. This is the self-serve version of a model they'd build inside a live engagement.
Is this financial advice?
No. The Ad Spend Saturation Simulator is an educational modeling tool for directional planning — not financial, investment, tax, or legal advice. Validate any real decision with a qualified professional.
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The Crimson Bench · Est. 2002 · Founded in New York City
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