Your emergency fund shouldn't sit in a regular checking account earning 0.01%. A high-yield savings account (HYSA) pays 4-5% with zero risk. I opened accounts at 8 different banks to find the best ones.
Quick Comparison
| Bank | APY | Minimum | Transfer Speed |
|---|---|---|---|
| Ally Bank | 4.25% | $0 | 1-2 days |
| SoFi | 4.50% | $0 | Instant (with direct deposit) |
| Marcus (Goldman Sachs) | 4.35% | $0 | 1-2 days |
| Wealthfront Cash | 4.75% | $0 | Instant |
| Capital One 360 | 4.10% | $0 | 1-2 days |
Ally Bank — Best All-Round
Ally is the most recommended HYSA for a reason. The app is clean, customer service is 24/7 and responsive, and they offer "buckets" — sub-accounts within your savings for different goals (emergency fund, vacation fund, etc.). The rate isn't the highest, but the experience is the best. Their no-penalty CD is also worth considering if you want to lock in a rate for a few months.
Wealthfront Cash — Highest Rate
Wealthfront offers the highest rate on this list at 4.75%. The account is actually a cash account (invested in money market funds), not a traditional savings account, but it's FDIC insured through partner banks. Withdrawals are instant if you have their debit card. The app is minimal but functional. If you just want the highest yield and don't care about banking features, this is it.
SoFi — Best for All-in-One Banking
SoFi combines checking, savings, and investing in one app. The 4.50% APY requires direct deposit — without it, the rate drops to 1.20%, which is basically nothing. If you set up direct deposit, SoFi is great. If you want a separate savings account, pick Ally or Marcus.
What About T-Bills?
Treasury bills are yielding 4.5-5% in 2026 and are state-tax-free. But they're less liquid — you buy them at auction and can't access the money for 4, 8, or 26 weeks. For your emergency fund, liquidity matters more than an extra 0.5% yield. Stick with an HYSA for the first $10,000-20,000, then consider T-bills for the excess.
Before opening any account, read Emergency Fund: How Much to Save First to know your target number.