Available nationwide, American Express is offering you a 3.50% Annual Percentage Yield (APY) on your funds for opening a new American Express High-Yield Savings Account. Update 10/24/25: Many are reporting that Amex is offering a targeted $400 bonus when opening a new savings account with $25,000 and maintaining that balance or 60 days. YMMV. May see this … Continue reading American Express High-Yield Savings Account: Earn 3.50% APY Rate [Nationwide]