The GnuCash checkbook-style register provides a custom, convenient and familiar interface to entering financial transactions.

The register supports common checking and credit-card transactions, as well as income, stock and currency transactions. The following features are also provided:

• The ability to enter split transactions
• The ability to mark a transaction as cleared or reconciled
• Autofill of entered transactions
• The ability to display multiple accounts in a single register window
• A summary bar that displays all of the relevant account's balance information
• Many options to customize the appearance and the display style

Every transaction must debit one account and credit others by an equal amount. This ensures the books balance: the difference between income and expenses exactly equals the sum of assets and liabilities.

You can create recurring transactions with a high level of customization of amounts and timeline. You can also set an automatic reminder when a transaction is due.

An assistant that runs when GnuCash is started allows scheduled transactions to be postponed without canceling or entering them before the due date.

GnuCash has an integrated module to display graphs of your financial data in the form of:

• Barcharts
• Piecharts
• Scatter plots

GnuCash also comes complete with a full suite of standard and customizeable reports, such as:

• Balance Sheet
• Profit & Loss
• Portfolio Valuation
• and many others.

Graphs and reports can be highly and easily customized in appearance and contents, in order to fullfill every user's need.

Account reconciliation allows the user to compare the transactions entered in an account against a bank statement. This operation is very useful to spot untracked transactions or data entry errors and ensure that your books match the bank's.

The GnuCash reconcile tool with running reconciled and cleared balances makes reconciling against bank statements an easy task.

Income/Expense Account Types (Categories) allow you to categorize your cash flow. When used properly with the double-entry feature and equity accounts, these enable you to generate reports, such as Profit & Loss, that plain-vanilla systems cannot handle.