Portability means that a surviving spouse’s applicable exclusion amount (also known as the surviving spouse’s credit shelter)i is increased by the deceased spouse’s unused exclusion amount (the deceased spouse’s unused credit shelter). Portability has been made permanent by the enactment of H.R. 8 by Congress (known as the American Taxpayer Relief Act of 2012) on January 1, 2013, and the signing of the bill into law by the President on January 2, 2013.
MANNER OF MAKING THE ELECTION
The election can only be made by timely filing an estate tax return (Form 706) and making the portability election of the deceased spousal unused exclusion (DSUE) amount.