Round Off Decimal Values of Currency Fields in the Salesforce UI and API

When you create a custom currency field and define the number of decimal places (e.g., 2), Salesforce applies rounding only in the user interface. The full precision value is still stored in the database.

User Interface (UI):
If a user enters a value such as $1.234 into a field set to 2 decimal places, the UI will display $1.23 after saving. However, if the user re-edits the field, the full value ($1.234) is shown. This rounding is purely visual.

API Input (e.g., REST API, Apex, Data Loader):
Salesforce does not round values provided through the API. If you insert or update a value like $1.234, it will be stored exactly as entered, regardless of the field’s decimal setting.

This behavior is intentional and ensures backward compatibility with external systems and integrations. If consistent rounding is required, it must be handled explicitly in code or integration logic.