Customer lifetime value calculator

The standard SaaS formula: average revenue per account times gross margin, divided by monthly churn. Three inputs, one honest number.

Fill in the three numbers and the LTV appears here.

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The LTV formula, unpacked

Placeholder section: why LTV = ARPA x margin / churn, what each input means, and the assumptions hiding inside the formula.

LTV to CAC: the ratio that matters

Placeholder section: the 3:1 rule of thumb, payback period, and why LTV alone says nothing about efficiency.

Frequently asked questions

Should LTV use gross margin or revenue?

Gross margin. A customer paying $100/month with 80% margin is worth $80/month of value; revenue-based LTV flatters the number.

What churn rate should I plug in?

Placeholder answer: customer churn vs net revenue churn trade-offs go here after research.

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