On the tax return, in the My Info section of the TurboTax program, you enter the address for where he would receive his mail and where the IRS could contact him by mail if there was ever a need. The address on the W-2 does not have to be the same address that is entered on his tax return. So the address on the W-2 in TurboTax should be the same address that is on his tax return.
