Only users having the right to add expenses are entitled to see values in the “My Actual Expenses” task list column.
The “Can See Financial Data” right enables the user to see values for “Estimated Expenses” and “Actual Expenses” on all projects he/she has access to.
The Expense Approval project right allows a user to see values for “Estimated Expenses” and “Actual Expenses” and run expense reports on that specific project.