SaaS magic number
In short
The SaaS magic number is an efficiency metric that shows how much new recurring revenue a company gets for each dollar spent on sales and marketing. It compares revenue growth in one quarter against the prior quarter's spend.
It helps leaders decide whether to invest more in go-to-market or fix efficiency first.
How to calculate it
A common version: take the change in quarterly recurring revenue, multiply by four to annualize it, and divide by sales and marketing spend from the previous quarter.
Example
Say quarterly recurring revenue rises from 2.0 million to 2.3 million, a 0.3 million increase. Annualized, that is 1.2 million. If the prior quarter's sales and marketing spend was 1.0 million, the magic number is 1.2.
How to read the result
Higher is better, and the exact thresholds vary by team and stage. As a general reading:
- Low: Spend is producing little new revenue. Fix targeting, conversion, or churn before adding budget.
- Middle: Efficiency is acceptable. Invest carefully and watch payback.
- High: Spend converts well. If capacity allows, consider investing more.
Limits
- Lags and seasonality: Using one quarter of spend can distort results in lumpy sales cycles.
- Churn is mixed in: If revenue growth is net of churn, high churn lowers the number even when sales performs well.
- Long cycles: Enterprise deals may close several quarters after spend, so a one-quarter lag is a poor match.
How GTM teams use it
- Budget decisions: Pair it with CAC payback before raising headcount or ad spend.
- Diagnosis: If it drops, check pipeline quality, win rate, and sales cycle length.
- Board reporting: Show the trend over several quarters, not one data point.
SaaS magic number FAQs
What is the SaaS magic number?
The SaaS magic number is a metric that measures how efficiently a software company turns sales and marketing spend into new recurring revenue. It compares annualized revenue growth in a quarter to the sales and marketing spend of the previous quarter.
How do you calculate the SaaS magic number?
Subtract the previous quarter's recurring revenue from the current quarter's, multiply by four to annualize, and divide by the previous quarter's sales and marketing spend. A result of 1.0 means each dollar of spend added one dollar of annual recurring revenue.
What is a good SaaS magic number?
It depends on stage, margins, and sales cycle length, so there is no universal target. Generally, a higher number means more efficient spend. Treat low numbers as a prompt to investigate funnel conversion and churn, and use the trend over several quarters.
What are the limitations of the SaaS magic number?
It uses a one-quarter lag, which suits short sales cycles but not long enterprise ones. It also mixes churn into revenue growth and can swing with seasonality. Use it with CAC payback and retention rather than alone.
