Retirement tax questions

If you contributed over the years, you would have an amount in Box 9a. If Box 2a is less than Box 1, this has already been calculated for you. If Box 2a is blank, then you need to work through the program and provide information to have the correct portion be taxable. The amount is Box 9a is used.

Tax rules for annuity benefits.

Part of the annuity benefits you receive is a tax-free recovery of your contributions to the CSRS or FERS. The rest of your benefits are taxable. If your annuity starting date is after November 18, 1996, you must use the Simplified Method to figure the taxable and tax-free parts. If your annuity starting date is before November 19, 1996, you generally could have chosen to use the Simplified Method or the General Rule.