Someone owes me money and can’t afford to pay it back. Can I use some of my maser to pay off the this debt on their behalf. Do I need to let them know about every bit I apply or only when loan is paid in full? On a very big loan , how often?
You can use maaser money to help him pay of his debt. It is unnecessary to inform of your good intentions.
Teshvas Tzitz Eliezer 9:1