KPICustomer Success & Service

Client Attrition Rate

Percentage of clients who close their accounts or move assets away in a period

What is Client Attrition Rate?

Client attrition rate is the percentage of clients lost in a period. It shows how many clients a business retains from one period to the next.

For firms that depend on ongoing client relationships, attrition directly affects revenue and growth.

How this KPI is measured

Function
Customer Success & Service
Sub-function
Client Retention
Industry
All Industries
Type
Lagging
Impact
Risk
Unit
%
Measurement frequency
Monthly / Quarterly
Formula
(Clients lost in period / Total clients at start of period) × 100

How to calculate it

Divide clients lost in the period by total clients at the start, and multiply by 100.

For example, if a firm started the year with 200 clients and lost 16, attrition is 8%.

Record the reason for each loss, and separate clients lost by choice from those that ended for other reasons, such as a project finishing.

Where it is used

  • Protecting revenue

    Track and reduce losses.

  • Understanding client loss

    Learn the reasons.

  • Improving client service

    Focus on retention.

How to improve it

Tips and common mistakes

  • Not all attrition is bad. Some clients are unprofitable.
  • Look at revenue attrition as well as count.
  • Track reasons over time.

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