Brew bottle deposit ledger calculator

Calculate deposits collected and deposits refunded 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 deposits collected and deposits refunded to compare changes to your inputs. The method and limits below explain the scope.

Examples

Examples

Try the starting example

Bottles issued (count)
120
Bottles returned (count)
90
Deposit per bottle (USD)
0.25
Deposits collected (USD)
$30.00
Deposits refunded (USD)
$22.50
Outstanding deposit liability (USD)
$7.50

Try another scenario

Bottles issued (count)
121
Bottles returned (count)
90
Deposit per bottle (USD)
0.25
Deposits collected (USD)
$30.25
Deposits refunded (USD)
$22.50
Outstanding deposit liability (USD)
$7.75
Calculation method

Calculation method

Deposits collected (USD)

Issued and returned bottle counts × deposit rate; returned cannot exceed issued.

Deposits refunded (USD)

Issued and returned bottle counts × deposit rate; returned cannot exceed issued.

Outstanding deposit liability (USD)

Issued and returned bottle counts × deposit rate; returned cannot exceed issued.

Symbols and units
a
Bottles issued (count)
b
Bottles returned (count)
c
Deposit per bottle (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; Issued and returned bottle counts × deposit rate; returned cannot exceed issued. 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.
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