a discalimer trust is a trust where the surviving spouse can ELECT to either take all the money up to 9 months after the death of the spouse or disclaim it and let it convert in to what is basically an a/b trust at that time.
it is mostly used to get 2x the state exclusion for estate taxes.
if the trust option is selected the surviving spouse is limited to all income and 5% of principal a year but there are exceptions where more money can be taken.
mathjak.........what is the default consequence if survivor , for whatever reason, does not elect or disclaim? Pros and cons of each?