Theres a firm which do halal business (construction and many others) as i have invested money in that firm and monthly they pay fix amount to me depending on how much investment made.
Answer
(Fatwa: 1315/1004=H/1429)
Fixed amount is interest which is haram.
If you and the firm have agreed upon some amount of profit, then you should write it clearly.
Allah (Subhana Wa Ta’ala) knows Best
Darul Ifta,
Darul Uloom Deoband