This Excel spreadsheet illustrates the impact upon income and "Total Wealth" of taking GLWB withdrawals at different times. It is vital that the user understand that the results are dependent upon the values in the several parameters and that a result in one set of data cannot be said to be representative of any more than that one set of data. 

The user should ensure that the value in "GLWB Percentage at 1st Withdrawal" is correct. Typically, that percentage is higher as age at first withdrawal is older.