# Checkbook Calculator

> Apply a list of deposits and withdrawals to an opening balance and create a running register.

Page: https://askcalculators.com/calculator/checkbook-calculator/
Definition: https://askcalculators.com/calculator/checkbook-calculator/definition.json
JSON Schema: https://askcalculators.com/calculator/checkbook-calculator/schema.json
Version: 1.0.0
Maintained by: AskCalculators (software project; not a credentialed reviewer)
Qualified review: pending. Automated checks do not establish professional approval.
Page status: Live
Review status: Pending

## Use
Open the calculator page and enter values. Query-string parameters can restore and bookmark a calculation.
Example: https://askcalculators.com/calculator/checkbook-calculator/?openingBalance=1000&transactions=250%2C+-42.75%2C+-85.20%2C+500%2C+-12.99

## Inputs
- openingBalance: Opening balance; type=money; required; default=1000
- transactions: Transactions; type=text; required; default=250, -42.75, -85.20, 500, -12.99

## Outputs
- endingBalance: Ending balance; format=currency; primary
- totalDeposits: Total deposits; format=currency
- totalWithdrawals: Total withdrawals; format=currency
- transactionCount: Transactions; format=integer
- lowestBalance: Lowest running balance; format=currency

## Formula
ending balance = opening balance + sum of signed transactions

## Rules
- Empty optional inputs are undefined, not zero.
- Hidden conditional inputs are ignored.
- Do not invent missing required inputs.