Understanding Premium Growth Rate
How we calculate. Growth % = (current − prior) ÷ prior × 100. See our methodology and accuracy policy .
Real-world scenario: A typical Premium Growth Rate case uses current premium 11200000 and prior premium 10000000. Enter the same figures below to reproduce the worked path.
What is Premium Growth Rate?
A top-line growth KPI. Negative values mean premium decline. State written vs earned and calendar vs accident year.
- Same premium basis both periods
- Same FX and consolidations
- Signed result shows direction
The Formula
Worked Example
Common Use Cases
- Board reporting: GWP/GEP growth
- Product lines: growth vs profitability
- Agency production: book growth
Pro Tips
- Normalize one-time books
- Separate rate vs exposure growth
- Watch M&A step-ups
| 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: Premium Growth Rate results are educational insurance and agency planning aids—not underwriting, actuarial, claims, or financial advice. Confirm statutory definitions with your carrier, regulator, and finance teams.
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.
When to use this calculator
- Use this page when your wording matches premium growth 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 premium growth rate? Start with the quick answer above, then open the linked calculator that matches your wording.
❓ Frequently Asked Questions
How do I use this premium growth rate calculator?
For premium growth 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 premium growth rate—the same percentage calculator expression is applied to your inputs.
What if my result looks wrong?
When checking premium growth 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 insurance ratio and reporting concepts, consult:
- NAIC — U.S. insurance regulatory resources
- Casualty Actuarial Society — actuarial education resources
- Insurance Information Institute — industry explainers