Free SaaS tool

CAC Calculator

Calculate blended CAC, paid CAC, CAC payback, LTV:CAC, funnel conversion, and how acquisition spend changes your unit economics.

CAC inputs

Paid Acquisition Spend

Ads, sponsorships, affiliates, paid newsletter slots, and paid launches.Content and SEO Spend

Writers, design, editing, SEO tools, and content distribution.Sales Tools

CRM, enrichment, email tools, demos, and outbound software.Sales Payroll

Sales salaries, commissions, contractors, and SDR support.Founder Sales Hours

Founder time spent on demos, calls, outbound, onboarding, and follow-up.Founder Hourly Rate

Opportunity cost used to price founder-led sales time.New Customers

Total new customers acquired during this period.Paid Customers

New customers attributed to paid acquisition.Leads

Qualified leads created during the same period.Trials or Demos

Trials, demos, or sales conversations created during the same period.ARPA

Average monthly revenue per account.Gross Margin

Revenue left after product delivery, hosting, and support costs.Monthly Churn

Monthly customer churn used to estimate LTV:CAC.

Blended CAC

$563

Paid CAC

$444

CAC Payback

8.4 months

LTV:CAC

3.0x

Acquisition needs tightening

A healthy SaaS model often targets 3x or better LTV:CAC. Improve the model by lowering spend, improving funnel conversion, raising ARPA, or increasing retention.

Funnel snapshot

Total acquisition cost

$19,125

Cost per lead

$46

Lead to customer

8.1%

Trial/demo to customer

37.0%

Organic customers

Required LTV for 3x

$1,688

Cost per acquisition day

$638

This normalizes the acquisition budget across a 30-day period so you can compare campaigns with different lengths.

Cost breakdown

Paid acquisition$8,000

41.8% of acquisition cost

Content and SEO$2,400

12.5% of acquisition cost

Sales tools$900

4.7% of acquisition cost

Sales payroll$5,200

27.2% of acquisition cost

Founder sales time$2,625

13.7% of acquisition cost

CAC improvement scenarios

Scenario	CAC	Payback	LTV:CAC
Current	$563	8.4 months	3.0x
10% better conversion	$511	7.6 months	3.3x
15% lower spend	$478	7.1 months	3.5x
Better spend + conversion	$435	6.5 months	3.9x

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