Best HYSA for $500,000 (2026), Above FDIC, MYGAs Win
Quick take: $500,000 is above the FDIC single-depositor-per-bank limit. You are now forced to either spread across multiple banks (operationally heavy), use joint and trust ownership to stack categories at one bank, or move significant dollars to MYGAs where state guaranty fund coverage gives you a separate $250K-$300K layer per carrier. At this balance, a 5- to 7-year MYGA ladder across 2-3 A-rated carriers typically beats any all-HYSA setup by $3,000-$6,000/year. Top 5 HYSAs ranked, then the MYGA math.
| Account | APY | Source, as of |
|---|---|---|
| Bask Bank Interest Savings | 3.90% | baskbank.com, 9/25/2026 |
| Synchrony High Yield Savings | 3.30% | synchrony.com, 9/24/2026 |
| Marcus by Goldman Sachs Online Savings | 3.50% | marcus.com, 9/24/2026 |
| CIT Bank Platinum Savings | 3.75% on $5,000+ (0.25% below $5,000) | cit.com, APYs stated as accurate as of 7/1/2026 (page checked 9/25/2026) |
| Ally Online Savings | 3.00% | ally.com, 9/24/2026 |
Rates are variable. For comparison, A-rated 5-year MYGAs paid about 5.50-6.05% (public carrier rate sheets, October 14, 2026). Rates change weekly. Other rate figures further down this page are as of June 27, 2026.
Top 5 HYSAs for $500,000 (2026)
| Rank | Bank | APY | Min | Annual interest on $500K |
|---|---|---|---|---|
| 1 | Bask Bank | 3.90% | $0 | ~$19,500 |
| 2 | Synchrony | 3.30% | $0 | ~$16,500 |
| 3 | Marcus | 3.50% | $0 | ~$17,500 |
| 4 | CIT Platinum Savings | 3.75% ($5K+) | $100 to open; $5K for top tier | ~$18,750 |
| 5 | Ally Bank | 3.00% | $0 | ~$15,000 |
The FDIC problem at $500K
$500K exceeds the $250K-per-depositor-per-bank limit at any single bank in any single ownership category. Three options:
Option 1: Two banks, $250K each
Clean and simple. Confirm both banks are FDIC-insured. Manage two relationships, two logins, two 1099-INTs at tax time. Annual interest at 4.45% blended: ~$22,250.
Option 2: Stack ownership categories at one bank
For a married couple at one bank:
- Spouse A individual: $250K covered
- Spouse B individual: $250K covered
- Total at one bank: $500K covered, works
Add a joint account and a revocable trust account and you can cover $1.25M+ at one bank. Operationally simpler than multiple banks, but requires the spouse setup.
Option 3: HYSA + MYGA split (where the math wins)
$250K HYSA + $250K MYGA at an A-rated carrier, both fully covered under separate guaranty systems. Adds a 75-125 bps yield boost on the MYGA half plus tax deferral.
Rates expire like milk.
The best MYGA, CD and savings rates change every few weeks. Get a short email when a rate on this page changes.
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Why MYGAs dominate at $500K
At $500K, the MYGA's structural advantages compound:
| Structure | Year-1 interest | Year-5 value | After-tax (24% bracket) |
|---|---|---|---|
| $500K all-HYSA at 4.40% (2 banks) | $22,000 taxed | ~$601,000 | ~$557,000 |
| $200K HYSA + $300K 5-yr MYGA at 5.25% | $8,800 taxed + $15,750 deferred | ~$629,000 | ~$598,000 |
| $150K HYSA + $350K MYGA ladder (3-yr + 5-yr + 7-yr at avg 5.40%) | $6,600 taxed + $18,900 deferred | ~$640,000 | ~$612,000 |
The HYSA + MYGA split is $40,000-$55,000 better at year 5 on $500K. That is a real difference for the same risk profile (FDIC and state guaranty fund are both A+-grade backstops).
The 2-3 carrier MYGA structure for $500K
State guaranty fund coverage is per owner per carrier. To stay fully covered on a $350K MYGA allocation, split across 2 carriers:
- $175K to Carrier A (e.g., Athene 5-year at 5.30%)
- $175K to Carrier B (e.g., Mass Mutual Ascend 5-year at 5.25%)
Both halves are fully covered under separate state guaranty fund layers. The two carriers compete on rate at renewal, and you keep your options open at maturity for 1035-exchange to whichever offers the best 5-year rate then.
Why HYSAs fragment ugly at $500K
Trying to hold $500K all-HYSA forces you into:
- Multiple banks (2-3 minimum), each with their own login, rate notifications, ACH limits, and 1099 reporting
- Multiple "high-yield" apps that all reprice on the same Fed-cut day
- Tax drag on every dollar of interest, every year, about $5,300/year for a 24% bracket holder
- Operational fragility, one forgotten password or one bank's tier change quietly costs hundreds in foregone interest
A 1-HYSA + 2-MYGA setup consolidates the same $500K into 3 institutions, locks 60-70% of the balance at a higher rate for 5-7 years, and defers the tax on the locked portion.
Common $500K HYSA mistakes
- Splitting across 4-5 HYSAs "to be safe." FDIC is solved with 2 banks. More than 2 HYSAs at this dollar level is operational waste.
- Skipping the MYGA conversation because "annuities feel complicated." A MYGA is the simplest annuity, one rate, one term, one surrender schedule. Simpler than managing 4 HYSAs.
- Picking a single MYGA carrier for the full $350K. State guaranty fund caps at $250K-$300K per carrier. Split across 2 A-rated carriers to stay fully covered.
- Ignoring the tax drag. $22K/year of HYSA interest = $5,300/year of federal tax in the 24% bracket. MYGAs defer until withdrawal, putting that money back to work.
Internal links
- Best HYSA for $1,000,000 (MYGA dominant)
- Best HYSA for $250,000 (at the FDIC limit)
- Annuity vs CD: which is safer?
- Current MYGA rates by term
📩 $500K above FDIC? The math now favors MYGAs.
Talk to Hans Goldstein, a licensed independent insurance producer.
At $500K, an all-HYSA setup forces multiple banks, multiple logins, and full tax drag on every dollar of interest. A HYSA + MYGA ladder across 2 A-rated carriers earns $40K-$55K more over 5 years on the same risk profile.
Send your details. Within one business day, you'll get a written independent comparison of the best current HYSA rates, the best current MYGA rates from A-rated carriers, and a recommended split for your situation. No pressure.
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📞 Hans Goldstein · 213-414-2808 · NPN 20602398, independent licensed insurance producer appointed with multiple A-rated carriers
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Disclosure
HYSA rates change daily and vary by bank, account tier, and promotional period. The rates shown reflect publicly posted APYs as of the date stated above and may be different by the time you open an account, always confirm the current APY on the bank's own site before transferring funds. FDIC coverage is $250,000 per depositor, per insured bank, per ownership category; NCUA coverage at federally insured credit unions is the same limit. This article is general information for educational purposes; it is not a personalized recommendation, solicitation, or offer of any specific bank account, brokerage product, annuity, or other financial product. Hans Goldstein is an independent licensed insurance producer (NPN 20602398) appointed with multiple A-rated annuity carriers; he is not a bank employee, broker-dealer registered representative, or fiduciary investment advisor. No compensation has been received from any bank or credit union in connection with this review. Multi-year guaranteed annuities (MYGAs) referenced here are long-term insurance contracts with surrender charges and are not suitable for funds you may need before the end of the surrender period; they are not FDIC insured and are backed instead by the issuing carrier and the state guaranty association of the owner's state of residence (typically $250,000-$300,000 of present value). Always read the actual account disclosure or contract and consult a licensed advisor before committing funds.