KPICustomer Success & Service

Subscriber Growth Rate

Month-over-month percentage growth in total paid or registered subscribers

What is Subscriber Growth Rate?

Subscriber growth rate is the percentage change in the number of subscribers over a period. It shows how fast a media service is growing its audience.

Steady growth is the foundation of a subscription business, and the rate shows whether acquisition is outpacing losses.

How this KPI is measured

Function
Customer Success & Service
Sub-function
Subscriber Growth
Industry
Media & Entertainment
Type
Lagging
Impact
Revenue
Unit
%
Measurement frequency
Monthly
Formula
((Subscribers end of period − Start of period) / Start of period) × 100

How to calculate it

Subtract subscribers at the start of the period from subscribers at the end, divide by the starting number, and multiply by 100.

For example, if a service grew from 500,000 to 530,000 subscribers over a quarter, the growth rate is 6%.

Report gross additions and losses separately so that you can see whether growth is limited by acquisition or by churn.

Where it is used

  • Tracking growth

    Follow audience building.

  • Evaluating marketing and content

    See effects on sign-ups.

  • Planning capacity and revenue

    Forecast.

How to improve it

Tips and common mistakes

  • Growth rates fall as the base gets bigger.
  • Look at the quality of new subscribers.
  • Track cost of acquisition.

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