What is the SaaS Magic Number?

The SaaS Magic Number measures sales efficiency by comparing net new annualized revenue generated in the current quarter against the sales and marketing spend of the previous quarter.

What is a good SaaS Magic Number benchmark?

A Magic Number over 1.0 indicates exceptional efficiency (CAC payback under 12 months). Between 0.75 and 1.0 is healthy, 0.5 to 0.75 warrants caution, and under 0.5 indicates unsustainable customer acquisition.

What is the SaaS Magic Number formula?

The formula is: (Current Quarter ARR - Previous Quarter ARR) * 4 / Previous Quarter S&M Spend. It represents how many annualized dollars of new revenue are generated per dollar of sales and marketing spent.

How does gross margin affect the Magic Number?

Multiplying the Magic Number by your gross margin percentage yields the Gross Margin Adjusted Magic Number, which directly determines your true cash CAC payback period.

B2B SaaS Magic Number & Sales Efficiency Calculator Online

Current Quarter Revenue ($)

Previous Quarter Revenue ($)

Previous Quarter S&M Spend ($)

Gross Margin Percentage (%)

SaaS Magic Number

1.25

Tier 1: High Efficiency (Accelerate Growth)

Net New ARR (Quarterly)

+$62,500

Annualized Net New ARR

+$250,000

Adjusted Magic Number

1.00 (Post-Margin)

Estimated CAC Payback

12.0 Months

Magic Number	GTM Health Tier	CAC Payback	Strategic Boardroom Recommendation
> 1.0	Tier 1: Outperformer	< 12 Months	Outstanding unit economics. Pour fuel on the fire; aggressively increase sales hiring and paid marketing.
0.75 – 1.0	Tier 2: Healthy Scaling	12 – 16 Months	Solid GTM playbook. Continue scaling while optimizing pipeline conversion and rep quotas.
0.50 – 0.75	Tier 3: Moderate Friction	16 – 24 Months	Evaluate sales cycle length and onboarding churn before expanding marketing budgets.
< 0.50	Tier 4: Capital Inefficient	> 24 Months	Stop scaling S&M immediately. Conduct root-cause audit on product-market fit, onboarding, and leaky bucket churn.

Frequently Asked Questions

Is B2B SaaS Magic Number Calculator free to use?

Yes, B2B SaaS Magic Number Calculator is completely free with no signup or registration required. All processing happens directly in your browser.

Is my data safe?

Absolutely. Your data never leaves your device. Everything runs locally in your browser — no uploads, no servers, no tracking.

Do I need to install anything?

No installation needed. B2B SaaS Magic Number Calculator works entirely in your web browser on both desktop and mobile devices.

How do I use

Simply enter or paste your input in the tool above, and the result will be generated instantly. No configuration required.