Tamilnad Mercantile Bank (TMB) has had its credit ratings reaffirmed by CRISIL Ratings. Fixed Deposits worth Rs. 15,000 Cr are rated CRISIL A+/Stable. Short Term Fixed Deposits (Rs. 25,000 Cr) and Certificate of Deposits (Rs. 1,000 Cr) are reaffirmed at CRISIL A1+. The outlook remains Stable.