EV charging reimbursement ledger calculator

Calculate reimbursement by driver and total reimbursement 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 reimbursement by driver and total reimbursement to compare changes to your inputs. The method and limits below explain the scope.

Examples

Examples

Try the starting example

Sessions [driver identifier,energy kWh,eligible fraction]; enter JSON
[["A",10,1],["B",20,0.5],["A",5,1]]
Reimbursement rate (USD/kWh)
0.3
Reimbursement by driver (JSON) (USD)
{"A":4.5,"B":3}
Total reimbursement (USD)
$7.50

Try another scenario

Sessions [driver identifier,energy kWh,eligible fraction]; enter JSON
[["A",12,0.5],["B",8,1]]
Reimbursement rate (USD/kWh)
0.4
Reimbursement by driver (JSON) (USD)
{"A":2.4,"B":3.2}
Total reimbursement (USD)
$5.60
Calculation method

Calculation method

Reimbursement by driver (JSON) (USD)

Sum session energy×eligible fraction×rate by driver; round each driver total to US cents.

Total reimbursement (USD)

Sum the rounded driver totals.

Symbols and units
a
Sessions [driver identifier,energy kWh,eligible fraction]; enter JSON
b
Reimbursement rate (USD/kWh)

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

  • Flat user-entered reimbursement rates; row driver identifiers are grouped verbatim. Supported limits: All numeric inputs and computed intermediates must remain finite. Supported numeric input magnitude is zero or 1e-12 through 1e12 in absolute value; reject values outside this bounded range. All lists/JSON record tables are limited to 100 records unless a stricter bound is stated; reject malformed record arity and wrong member types. All numeric values must be finite. Lists contain at most 100 records; required lists must be nonempty. Rates, probabilities and fractions are entered as fractions, not percentages; fractions must be between 0 and 1. Use a single consistent user-selected currency for all amounts; no exchange-rate conversion.
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