One option to solve your dilemma about being named as a joint tenant on this piece of property where under operation of law you inherit its entirety since you survived your mother is to sign a written "dislcaimer" of your joint tenancy rights and record it. By doing this, the property then gets transferred under the terms of the Will or trust and if none of the two, by intestate succession where the state per statute determines who closest in relation inherits. If the closest relations are the children then they should receive the property.By doing this, the property should get a stepped up basis for tax purposes and the three children share equally. I see no reason why there should be a 1099 to you concerning the joint tenancy issue. I recommend that you first consult with a Wills and trust attorney before you make any final decision.