Iowa: 8.98% (income over $64,261) New Jersey 8.97% (income over $500,000) New York: 8.97% (income over $500,000) Vermont: 8.95% (income over $373,650) Maine: 8.5% (income over $39,549 (couple), $19,749 (single)) Washington, D.C.: 8.5% (income over $40,000) Looking at...