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Calcimator

Loss Ratio Calculator

Calculate insurance loss ratios, expense ratios, combined ratios, and underwriting profitability metrics.

Inputs

$
$
$
$
$

Results

Loss Ratio

70%

Combined Ratio

95%

Underwriting Profit

$50,000.00

≈ 5 years of state college

Profit Margin

5%

Expense Ratio25%
Operating Ratio95%
How to Use This Calculator
  1. Enter incurred losses (paid plus reserved) for the period.
  2. Input earned premium for the same period.
  3. Review the loss ratio percentage.
  4. Compare to the target loss ratio embedded in the rate filing.
  5. A combined ratio (loss ratio + expense ratio) above 100% indicates an underwriting loss.

How the result changes with Earned Premiums

Earned PremiumsLoss RatioCombined RatioUnderwriting Profit
$400,000.00175%237.5%-$550,000.00
$1,400,000.0050%67.9%$450,000.00
$2,600,000.0026.9%36.5%$1,650,000.00
$3,600,000.0019.4%26.4%$2,650,000.00

What each input means

Earned Premiums
Total earned premiums
Incurred Losses
Total incurred losses
Paid Losses
Total paid losses
Loss Adjustment Expenses
Expenses related to claims handling
Underwriting Expenses
Acquisition and operational expenses

How this is calculated

Formula

Loss Ratio = (Incurred Losses / Earned Premiums) × 100

Worked example, using the default values

  1. Identify Input Parameters
    4 parameters
    Earned Premiums = 1000000, Incurred Losses = 700000, Paid Losses = 650000, Loss Adjustment Expenses = 50000 = 5 input(s) provided
  2. Calculate Loss Ratio
    Loss Ratio
    70 = 70%
  3. Calculate Combined Ratio
    Combined Ratio
    95 = 95%
  4. Calculate Underwriting Profit
    Underwriting Profit
    50000 = $50,000
  5. Calculate Expense Ratio
    Expense Ratio
    25 = 25%
  6. Calculate Operating Ratio
    Operating Ratio
    95 = 95%

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