Insurance supplied short-rate refund calculator

Calculate earned premium and refund with your own figures.

Your numbers

Use the units shown. Results update as you change valid inputs.

Choose the currency for these amounts. Changing it keeps your numbers and does not convert exchange rates.

Use earned premium and refund to compare changes to your inputs. The method and limits below explain the scope.

Examples

Examples

Try the starting example

Premium paid (USD)
1200
Earned premium fraction supplied by insurer (%)
35
Cancellation fee (USD)
25
Earned premium (USD)
$420.00
Refund (USD)
$755.00
Additional amount due (USD)
$0.00

Try another scenario

Premium paid (USD)
1201
Earned premium fraction supplied by insurer (%)
35
Cancellation fee (USD)
25
Earned premium (USD)
$420.35
Refund (USD)
$755.65
Additional amount due (USD)
$0.00
Calculation method

Calculation method

Earned premium (USD)

Use the user-supplied short-rate earned fraction, then deduct cancellation fee from unearned premium.

Refund (USD)

Use the user-supplied short-rate earned fraction, then deduct cancellation fee from unearned premium.

Additional amount due (USD)

Use the user-supplied short-rate earned fraction, then deduct cancellation fee from unearned premium.

Symbols and units
a
Premium paid (USD)
b
Earned premium fraction supplied by insurer (%)
c
Cancellation fee (USD)

Use the units shown. A list keeps the order in which you enter its values. The symbol ^ means “raised to the power of”.

Assumptions & limits

Assumptions & limits

  • User-supplied measurements and assumptions; Use the user-supplied short-rate earned fraction, then deduct cancellation fee from unearned premium. Supported limits: Finite numeric values bounded to 1e9 magnitude; lists and tables contain 1–100 records unless a stricter bound is stated. Inputs use the units shown. Lists explicitly paired by a method must have matching lengths; independent polynomial coefficient vectors may differ. Respect stated physical, interpolation, policy and computational domain limits.
Are these inputs private?

These calculations run in your browser. A shared link contains the values you choose to share. Only questions submitted to the separate AI finder are sent to OpenAI.

Share this page
Share this calculator

Leave unchecked to share the page without your entered values.