ProLogicStack
CPA Breakeven Modeler
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Internal Tools 5 min read Updated Jan 2026

CPA Breakeven Modeler

For Agencies & Lead Gen.

Executive Summary

This modeler shifts the focus from 'Cost per Lead' to 'Cost per Acquisition' relative to Lifetime Value (LTV). It allows agencies and SaaS founders to calculate exactly how much they can afford to pay to acquire a customer based on how long that customer stays and how much they spend over time.

The Strategic Context

Agencies and service businesses often die because their LTV:CAC ratio is broken. They pay $500 to acquire a client who only pays $400 in total. This tool helps you reverse-engineer your bid strategy. By understanding your LTV cap, you can set aggressive yet safe bid caps on Google and Facebook, outspending competitors who don't know their numbers.

Core Advantages

LTV-Focused Acquisition modeling.

Subscription & Retainer logic.

Scientific Bid Cap setting.

Lead Quality control metrics.

The Cost of Inaction

Ignoring LTV leads to short-term decisions that kill long-term growth. You cannot scale if your bucket has a hole in it.

Implementation Roadmap

1

Estimate client lifespan.

2

Input monthly retainer.

3

Get Max CPA.

4

Set ad platform constraints.

System Operational
v2.4.0

CPA Breakeven Modeler

Deploy this specific architecture to optimize your agency's workflow efficiency.

Initialize Tool
Access
Instant
License
Commercial

Enterprise Support

Scaling past $10M ARR? You need custom infrastructure, not just tools.

Contact Engineering