IOB raises base rate to 10.25%Press Trust of India / Chennai June 30, 2011, 19:26 ISTPublic sector Indian Overseas Bank (IOB) has raised its base rate from 10% to 10.25% with effect from tomorrow.The city-headquartered company also raised the bench mark prime lending rate from 14.25% to 14.50% with effect from July 1, 2011, a bank statement said here.