Glossary · Banking
What is High-yield savings account (HYSA)?
A savings account paying significantly above the national average — typically from online banks. Same FDIC protection as a regular savings account, often 50× to 200× the interest.
Last updated April 30, 2026
How it works
A high-yield savings account is structurally identical to any other savings account — FDIC-insured (or NCUA-insured at credit unions) up to $250k, withdrawable on demand, no minimum holding period. The "high-yield" part is just that the bank pays a higher APY than the national average.
The way to think about HYSAs: every dollar in a brick-and-mortar bank savings account earning 0.01% is leaving roughly 4% per year on the table. On $50k, that's $2,000/year. The opportunity cost compounds.
| Tier | Typical APY | Examples (2024) |
|---|---|---|
| Brick-and-mortar national | 0.01–0.40% | Chase, Bank of America, Wells Fargo |
| Smaller community banks | 0.50–2% | Varies regionally |
| Online HYSA | 3.5–5%+ | SoFi, Marcus, Ally, Capital One 360, Discover |
| Money market funds (brokerage) | 4.5–5.2% | Vanguard VMFXX, Fidelity SPAXX |
| Treasury bills (4-week) | ~5%+ | Direct from TreasuryDirect or via brokerage |
The brokerage money market funds and short-term Treasuries beat HYSAs slightly when rates are high; HYSAs beat them when rates are low. For amounts under FDIC limit, an HYSA is the simplest move.
Example
A worked-out year on $20,000:
- Chase savings: 0.01% APY → $2 in interest
- SoFi HYSA: 4.0% APY → $800 in interest
- VMFXX (Vanguard money market): 4.95% APY → $990 in interest
- 4-week Treasury bills: 5.05% APY → $1,010 in interest
The same $20k generated $988 more at 4.95% vs 0.01%, with comparable safety. Multiplied across the lifetime of an emergency fund, the difference is meaningful.
Why it matters
The HYSA decision is one of the highest-ROI financial moves available with essentially zero ongoing effort:
- Open online in ~10 minutes. SoFi, Marcus, Capital One — all have streamlined signup.
- Move emergency fund first. Most people have $5k–50k sitting in checking/savings earning nothing. That should be the first thing you redirect.
- Don't chase 0.10% spreads. SoFi at 4.0% vs Marcus at 4.1% on $20k = $20/year difference. Pick a reputable one and stop optimizing.
- Promotional rates fade. "5.5% for 6 months then 0.5%" promotions are common; most experienced users avoid them.
- HYSA isn't for long-term savings. Money you won't need for 5+ years should mostly be in stocks/bonds, not cash. HYSA is for 0-2 year horizons.
What HYSA isn't:
- An investment. You're protecting capital, not growing it. After-tax, after-inflation real return on a 4% HYSA is often slightly negative. Cash is for liquidity, not growth.
- A substitute for FDIC-insured backing. USDC at "5% APY on Aave" looks similar but carries real principal risk. HYSA at SoFi is FDIC-insured to $250k.
For most households, the right cash setup is: 3-6 months of expenses in an HYSA, an additional savings target (down payment, planned spending) in HYSA or short-term Treasuries, anything beyond that in invested accounts.