Cash Yield Gap Analyzer

Audit how much compound interest your liquid cash sacrifices by remaining parked in traditional low-yield big bank accounts (0.01%–0.05% APY) instead of competitive high-yield savings (4.00%+ APY).

Cash Parameters

How long this cash reserve stays liquid.
Leading online high-yield savings & money market yields.
National mega-banks average 0.01% to 0.05% APY.
Savings interest is taxed as ordinary income unless sheltered.
Total Cash Lost to Bank Inertia
After-Tax Opportunity Cost
$1,385
By keeping your balance in a traditional 0.01% account instead of a 4.25% high-yield account, you give up $1,385 in net interest after taxes over 3 years.
Traditional Bank (0.01%)
$17,203
Net interest: $3 total
High-Yield Account (4.25%)
$18,588
Net interest: $1,388 total
Compounding Trajectory Over Time
High-Yield (Net)
Traditional (0.01%)
The Gap
Timeline Principal Added Trad. Net Value HYSA Net Value Lost Yield Gap
Calculations up to date. Ready to export.

Why Do Big Banks Pay 0.01%?

Megabanks possess hundreds of billions in sticky consumer checking balances that satisfy regulatory liquidity requirements. Because customer inertia is high, they face little incentive to pay competitive deposit yields.

FDIC Protection Is Identical

Online high-yield savings accounts and cash management programs typically carry the same standard FDIC insurance backing up to $250,000 per depositor per institution. You do not sacrifice safety for yield.

No Bank Switching Required

You can maintain your existing checking account, direct deposit, and bill-pay setup at your primary bank, linking a free external high-yield savings account via ACH to sweep excess idle emergency reserves.

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