Attrition Rate
Definition
Attrition Rate measures the percentage of sales capacity lost to turnover (voluntary and involuntary departures) over a given period.
Why It Matters
- Quantifies team stability and turnover impact
- Drives hiring urgency and capacity planning
- Benchmarks against industry standards
- Predicts future capacity risk
- Reveals organizational health issues
Formula
Basic Formula
Attrition Rate = (Capacity Lost to Attrition / Beginning of Period Capacity) × 100%
Example Calculation
Scenario:
- Q4 Beginning Capacity: $11.0M
- Q4 Attrition: $5.0M (5 people left)
- Q4 Attrition Rate: $5.0M / $11.0M = 45.5%
This means 45.5% of the starting capacity was lost to attrition during the quarter.
Time Periods
Quarterly Attrition Rate
Quarterly Rate = (Q Attrition / Q Beginning Capacity) × 100%
Use for: Short-term capacity planning, immediate hiring needs
Annual Attrition Rate
Annual Rate = (Annual Attrition / Average Capacity) × 100%
Use for: Long-term trends, benchmarking, strategic planning
Annualized Quarterly Rate
To compare a single quarter to annual benchmarks:
Annualized Rate = Quarterly Rate × 4
Example: 12% quarterly rate → 48% annualized (very high!)
Industry Benchmarks
| Attrition Level | Annual Rate | Quarterly Rate |
|---|---|---|
| Low | < 15% | < 4% |
| Average | 15-20% | 4-5% |
| Above Average | 20-30% | 5-7.5% |
| High | 30%+ | 7.5%+ |
| Critical | 40%+ | 10%+ |
Industry Average (SaaS Sales): ~13.1% annually, ~3.3% quarterly
Worked Example
Company: North America East Territory
Q1 2025:
- Beginning Capacity: $17.0M (15 people)
- Attrition: $2.0M (2 people)
- Attrition Rate: 11.8%
Q2 2025:
- Beginning Capacity: $15.3M (13 people)
- Attrition: $2.3M (3 people)
- Attrition Rate: 15.0%
Q3 2025:
- Beginning Capacity: $13.3M (11 people)
- Attrition: $2.5M (3 people)
- Attrition Rate: 18.8%
Q4 2025:
- Beginning Capacity: $11.1M (9 people)
- Attrition: $5.0M (5 people)
- Attrition Rate: 45.5% ⚠️ CRITICAL
Full Year 2025:
- Total Attrition: $11.8M
- Average Capacity: $14.2M
- Annual Attrition Rate: 83% 🚨 CRISIS
What Drives Attrition Rate?
Organizational Factors:
- Compensation below market
- Poor management or culture
- Lack of career progression
- Unrealistic quotas
- Inadequate training/support
External Factors:
- Market conditions (hot job market)
- Competitor recruiting
- Industry consolidation
- Remote work opportunities
Natural Factors:
- Retirements
- Relocations
- Career changes
- Performance terminations
Impact on Capacity Planning
High Attrition = Chronic Understaffing
Even if you backfill immediately:
- New hires start at 0% capacity
- Take 5+ months to reach full productivity
- Meanwhile, more people leave
- Creates a "hiring treadmill"
Recovery Lag Effect
Attrition Rate: 40% annually
Average Recovery Lag: 6 months
→ You're always 6 months behind target capacity
Best Practices
1. Track Monthly
Don't wait for quarterly reviews. Monitor departures in real-time.
2. Segment by Cohort
| Segment | Why It Matters |
|---|---|
| By Tenure | Are new hires leaving or veterans? |
| By Performance | Losing top performers or bottom performers? |
| By Manager | Is one team experiencing high attrition? |
| By Territory | Are certain regions more challenging? |
3. Set Acceptable Thresholds
Example policy:
- Target: < 15% annual attrition
- Yellow Flag: 15-25% (investigate)
- Red Flag: > 25% (immediate action required)
4. Calculate "Acceptable" Attrition
Not all attrition is bad. Some is inevitable and healthy:
- Performance terminations (bottom 5-10%)
- Promotions out of role
- Retirements
Healthy Attrition: ~8-10% annually
Common Pitfalls
- Measuring headcount attrition instead of capacity attrition (losing a top performer ≠ losing a bottom performer)
- Not accounting for leaves of absence (temporary vs permanent loss)
- Comparing quarterly to annual benchmarks (without annualizing)
- Ignoring seasonality (Q1 often has higher attrition)
Related Terms
- Capacity at Risk - Predicting future attrition
- Recovery Lag - Time to restore lost capacity
- Backfill Rate - How quickly you replace lost capacity
- Unrecovered Gap - Capacity not yet replaced
References
- Industry benchmark: 13.1% from Bridge Group's SDR/BDR benchmarks
- SaaS sales attrition typically 15-20% annually for AE roles
- Enterprise AE attrition tends lower (~12-15%), SMB higher (~20-25%)