Understanding Write-Off Rate
How we calculate. Write-off rate % = write-offs ÷ standard worked value × 100. See our methodology and accuracy policy .
Real-world scenario: A typical Write-Off Rate case uses write-off amount 12000 and standard value 150000. Enter the same figures below to reproduce the worked path.
What is Write-Off Rate?
A realization cousin: write-offs reduce billable value before invoices go out. Track separately from collection shortfalls.
- Standard value = hours × standard rates
- Write-offs = value never billed
- Same matter period
The Formula
Worked Example
Common Use Cases
- Partner reviews: discount discipline
- Matter audits: leak points
- Pricing: rate vs write-off tradeoffs
Pro Tips
- Separate courtesy discounts from true write-offs
- Don’t mix collection shortfalls
- Segment by practice group
| Scenario | When to use |
|---|---|
| Percent of a number | Finding a part of a whole (tax, tip, score) |
| Percent change | Comparing old vs new values |
Limitations: Write-Off Rate results are educational practice-management aids only—not legal advice, fee advice, or a substitute for counsel, ethics rules, or engagement letters. Confirm definitions with your firm policies and applicable professional rules.
Common mistakes
- Swapping part and whole: The denominator must be the full total, not a subset.
- Rounding too early: Carry extra decimal places through multi-step work before rounding the final percent.
- Mixing percent and decimal forms: Enter rates in the format the calculator labels expect.
The worked example for write off rate was verified with the calculator form on this page—enter the same values to confirm the result.
When to use this calculator
- Use this page when your wording matches write off rate and the form labels on screen.
- Use percent of a number for “what is X% of Y?” problems.
- Use number is what percent when you know part and whole and need the percent.
Still unsure about write off rate? Start with the quick answer above, then open the linked calculator that matches your wording.
❓ Frequently Asked Questions
How do I use this write off rate calculator?
For write off rate, enter the values labeled on the form, then press Calculate. Compare the result to the worked example on this page.
What formula does this page use?
See the quick answer and formula box above for write off rate—the same percentage calculator expression is applied to your inputs.
What if my result looks wrong?
When checking write off rate, re-check part vs whole (or rate vs base), rounding, and whether percents were entered as 25 rather than 0.25 when the form expects percents.
Authoritative References
For practice-management concepts and professional rules, consult:
- American Bar Association — ethics and practice resources
- Law Practice Today — practice management articles
- NABE — legal administrators community