ProAdvisor · Simulator
Insurance Combined Ratio Simulator
Is the underwriting actually profitable?
Assumptions
Combined ratio
94%
Underwriting profit
$300,000
Loss ratio
64%
| Metric | Value |
|---|---|
| Loss ratio | 64% |
| Expense ratio | 30% |
| Combined ratio | 94% |
| Underwriting profit | $300,000 |
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Built by The Crimson Bench · Educational model, not financial advice
About the Insurance Combined Ratio Simulator
Enter premiums, losses, and expenses to see loss, expense, and combined ratios — and whether the book makes an underwriting profit.
It's built for directional planning: change any assumption and watch the whole projection move, the way a seasoned operator pressure-tests a plan before committing capital. Everything is computed live in your browser — nothing is sent anywhere.
How the Insurance Combined Ratio Simulator Works
The model takes 3 assumptions and returns 3 headline metrics plus a full breakdown. Here is exactly what goes in and what comes out — no black box.
The Inputs
| Assumption | Example value |
|---|---|
| Earned premium | $5,000,000 |
| Incurred losses | $3,200,000 |
| Expenses | $1,500,000 |
Worked Example
Every figure below is produced by the live model using the example assumptions above. Change any input in the simulator to see your own numbers.
Combined ratio
94%
Underwriting profit
$300,000
Loss ratio
64%
| Metric | Value |
|---|---|
| Loss ratio | 64% |
| Expense ratio | 30% |
| Combined ratio | 94% |
| Underwriting profit | $300,000 |
The Operator's Read
A combined ratio under 100% means the book earns an underwriting profit before any investment income — the mark of disciplined underwriting.
Assumptions & Limitations
- •The model is deterministic: it projects your inputs forward with clear arithmetic, not a Monte-Carlo or probabilistic forecast. It shows one scenario at a time — run several to bracket a range.
- •Defaults are illustrative benchmarks, not your business. Replace every field with your real numbers before drawing conclusions.
- •It abstracts away taxes, financing, seasonality, and one-off events unless a field explicitly captures them. Treat the output as a directional estimate.
- •This is an educational tool, not financial, investment, tax, or legal advice. Validate real decisions with a qualified professional.
Frequently Asked Questions
What does the Insurance Combined Ratio Simulator calculate?
Enter premiums, losses, and expenses to see loss, expense, and combined ratios — and whether the book makes an underwriting profit. It takes 3 assumptions — Earned premium, Incurred losses, Expenses — and returns Combined ratio, Underwriting profit, Loss ratio, along with a full projection table you can export.
How do I use the Insurance Combined Ratio Simulator?
Enter your own figures in the input fields above — Earned premium, Incurred losses, Expenses, and the rest. The model recalculates instantly and shows the resulting Combined ratio and full breakdown. No sign-up needed to run it.
Is the Insurance Combined Ratio Simulator free?
Yes — you can run the simulator and see the headline results for free. Toolkit Pro unlocks the full projection table, Excel/PDF export, saved scenarios, and AI analysis: $180/mo, $1,728/yr, or unlock any 3 simulators for $20.
What's the difference between this and a free calculator?
A calculator answers one question. This simulator models the full picture — multiple linked assumptions, a projection table, and scenario comparison — the way an operator would build it in a spreadsheet, but instantly.
Who built the Insurance Combined Ratio Simulator?
The Crimson Bench's Ivy League-educated operators — the same people we deploy into C-suites. This is the self-serve version of a model they'd build inside a live engagement.
Is this financial advice?
No. The Insurance Combined Ratio Simulator is an educational modeling tool for directional planning — not financial, investment, tax, or legal advice. Validate any real decision with a qualified professional.
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The Crimson Bench · Est. 2002 · Founded in New York City
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