What is the Sharia ruling regarding usurious interest on inheritance preserved in the bank, and is it permissible to take this money in its entirety, or must the interest be disbursed to its legitimate beneficiaries? Also, can this interest be used to pay off the accumulated tax debts of the deceased?

Interest-based gains are forbidden by Islamic law, and one must dispose of them by spending them on Muslim public interests or on the poor and needy. It is not permissible to benefit from them personally. As for the taxes owed by the deceased, they are to be paid from his estate before its distribution, provided they are rightfully due and not an act of injustice. It is not permissible to pay these taxes from the forbidden interest-based gains, even if doing so is to avert injustice.