# Case Deflection Rate Calculator

> Estimate the share of self-service help sessions that avoided a support case, adjusted for sessions with a real support need, and the cost saved.

Category: Sales & CRM · Applies to: Worldwide · Last updated: 2026-10-29
Interactive calculator: https://calculators.geekmidst.com/calculators/case-deflection-rate-calculator

Case deflection rate is the share of customers with a support need who solved it through self-service instead of opening a case. Not every help-centre visit is a would-be case, so the calculator lets you set that share.

Also called: Ticket deflection calculator, Self-service resolution rate.

## Inputs
- Self-service sessions (default 8000)
- Sessions that still raised a case (default 1200)
- Sessions with a real support need (unit %; default 60)
- Cost per assisted case (default 12; optional)
- Currency

## Results
- Case deflection rate
- Cases deflected
- Raw rate (all sessions)
- Estimated support cost saved

## Formula

```
Needing help = Sessions × Need%;  Deflected = Needing help − Cases raised;  Deflection rate = Deflected ÷ Needing help × 100;  Savings = Deflected × Cost per case
```

Where:
- Need%: share of sessions that would otherwise have become a case
- Cases raised: sessions followed by a case

## Worked example
1. Sessions with a real need: 8,000 × 60% = 4,800.
2. Deflected: 4,800 − 1,200 = 3,600, so the rate is 3,600 ÷ 4,800 = 75%.
3. Savings: 3,600 × 12 = 43,200.

**Result:** Self-service deflected about 3,600 cases (75% of real support needs), saving roughly 43,200 in assisted support.

## What the result means

The raw rate (every session counted) flatters self-service. Use a conservative need share, and check that deflected customers do not come back through another channel within a few days.

## Assumptions and limits
- The need share is your estimate; the result is only as good as that estimate.
- Each deflected session would otherwise have become exactly one case.
- Product names such as Salesforce are trademarks of their owners. This calculator is independent, is not affiliated with or endorsed by any CRM vendor, and uses only the figures you enter.
- Customers who gave up without help look like deflections; survey a sample to check.
- The cost of running the self-service channel is not subtracted.

## Questions

### How do I estimate the share with a real support need?

Ask “Did this answer your question?” on articles, or count sessions that started from a contact page or a product error.

### Is deflection the same as self-service score?

No. A self-service score compares self-service use with assisted cases overall; deflection asks how many of those sessions avoided a case.

## Related calculators
- [Service SLA Breach Rate Calculator](https://calculators.geekmidst.com/calculators/sla-breach-rate-calculator)
- [ROI Calculator](https://calculators.geekmidst.com/calculators/roi-calculator)
- [Percentage Calculator](https://calculators.geekmidst.com/calculators/percentage-calculator)

Source: GM¹X CalcVerse — https://calculators.geekmidst.com/calculators/case-deflection-rate-calculator