u/113thstreet

I have a sibling who lives in Canada. I do not. The house investments, and bank accounts are jointly held by my sibling and my mother. My sibling and I are the only beneficiaries. We are co executors and the will states a 50/50 split. My problem is with the jointly held assets. Do they automatically go to my sibling? Basically leaving nothing to be distributed in the will itself, or does the will override the jointly held designation? Thanks.