Hello, I am going to be lending a friend a large sum of money. Due to the expenses I am incurring with this loan, my friend will be paying a small amount of interest. I found the Bris Pinchas – Heter Iska on your website, is it acceptable for us to just sign this contract before entering the loan, or is there anything else we have to do. We have both read the abridged Halachos and understand how the Heter Iska works. Thank you
If you both understand what the heter iska is doing and you both agree to it and sign it, it is valid.