Portability (DSUE)

A surviving spouse can use the deceased spouse's unused exemption.

What is Portability (DSUE)?

The deceased spouse's unused exclusion amount (DSUE) can be transferred to the survivor, effectively doubling the couple's shelter. It is not automatic: the executor must elect it on a timely filed estate tax return (Form 706), even if no tax is owed.

Portability (DSUE): a worked example

A spouse dies using none of their exemption; the survivor adds it to their own through portability.

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