American Express High Yield Savings has no minimum balance and no minimum opening deposit. The full APY (~4.00%) applies to any balance. There are no monthly fees regardless of balance.

AmEx HYSA Balance Requirements

Requirement Amount
Minimum balance $0
Opening deposit $0
Balance to earn APY $0.01+
Monthly fee $0
Fee for low balance None

AmEx HYSA vs Competitors: Minimums

Institution Min Balance Monthly Fee APY
AmEx HYSA $0 $0 ~4.00%
Marcus HYSA $0 $0 ~4.10%
Ally HYSA $0 $0 ~4.00%
Synchrony HYSA $0 $0 ~4.50%
SoFi HYSA $0 $0 ~4.20%*

All major HYSA providers in 2026 have eliminated minimum balance requirements. AmEx is consistent with the market.


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