If you are married, federal estate tax “portability” lets the survivor use any unused estate tax exemption from the first spouse to die. That carryover—called the deceased spouse’s unused exclusion (DSUE)—can be worth millions of dollars in tax savings for your family. The catch is simple but strict: you must file a timely estate tax return for the first spouse, even when no tax is due. With a little planning, you can secure the DSUE and keep options open for wealth transfers, business exits, and home sales down the road.
Understand What Portability Really Gives You
Each spouse has a federal estate and gift tax exemption. When the first spouse dies, any unused exemption can be “ported” to the survivor. The survivor adds that DSUE to their own exemption, increasing the amount they can transfer during life or at death without federal estate tax. Portability pairs well with Houston families whose wealth sits in homes, retirement accounts, closely held companies, or life insurance trusts that may grow over time.
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