The SIU Credit Union is a personal loan from SIU Credit Union. The ongoing APR is Signature Loan/Closed End (>$2,500): 10.99% APR, 12-48 months; Signature Loan/Open End (<$2,500): 15.65% APR, 12-36 months. Loan terms: 12-48 months (closed end, >$2,500); 12-36 months (open end, <$2,500).