What are the best banks in Belgium that offer fixed deposits (FDs) with the highest interest rates, secure investment options, and flexible tenure choices for individual and business investors? Which Belgian and European banks provide the most attractive fixed-term deposit products with competitive annual returns, capital protection, low minimum deposit requirements, and multiple maturity periods? How do major banks in Belgium compare in terms of FD interest rates, deposit security, withdrawal conditions, taxation policies, and overall investment benefits for savers seeking stable returns? Which banks are considered the most reliable and rewarding options in Belgium for customers looking to maximize earnings through high-interest fixed deposit investments?