I-Bonds and MYGAs solve different problems. I-Bonds are a small-dose, inflation-protected, multi-decade compounding tool with a $10K/year cap. MYGAs are a lump-sum, locked-rate, 3-10 year contract with full state guaranty backing. They're not substitutes. They're complementary tiers of a fixed-income allocation.
| Dimension | I-Bonds | MYGA |
|---|---|---|
| Yield (checked September 2026) | 4.26% composite (0.90% fixed + 3.34% annualized variable), May, Oct 2026 issues | About 5.50-6.05% (A-rated 5-year, 10/14/2026) |
| Yield structure | Fixed + CPI variable, resets every 6 months | Locked for full term |
| Inflation linkage | Direct: CPI-U adjustment | None: locked nominal rate |
| Annual purchase limit | $10K/person, electronic only (paper tax-refund option ended 2025) | Unlimited |
| Minimum | $25 | $10K-$25K |
| Federal tax | Deferred until redemption | Deferred until withdrawal |
| State tax | Exempt (31 USC 3124) | Taxable when withdrawn |
| Default protection | U.S. Treasury: unlimited | State guaranty $250-300K per owner per carrier |
| Liquidity year 1 | Locked | 10% per year free withdrawal |
| Early withdrawal penalty | 3 months interest (years 1-5) | Surrender charge (typically 9% yr 1, declining) |
| Max term | 30 years | Typically 3-10 years |
| 1035 exchange eligible | No | Yes (tax-free to another annuity) |
The hybrid (Option A) typically outperforms when inflation runs hot, underperforms slightly when inflation runs cool. The MYGA-only (Option B) is more predictable but loses the inflation hedge.
Inflation risk. If CPI surges to 6-8%, your locked MYGA at 5.50% becomes a real-yield loser. I-Bonds adjust automatically. A 10-20% I-Bond allocation hedges this scenario at small opportunity cost.
Two reasons: (1) $10K/year cap means you can't deploy a 6-figure lump sum; (2) when inflation runs cool, the I-Bond composite drops below MYGA rates; in September 2026 the gap was roughly 155-175 bps (4.26% vs about 5.50-6.05%).
Yes to both. I-Bonds: gift via TreasuryDirect, counts toward recipient's annual limit. MYGAs: typically structured as ownership change (1035 to recipient) or beneficiary designation.
Technically yes. I-Bonds are direct U.S. Treasury obligations with unlimited backing. MYGAs are insurance contracts backed by carrier general account + state guaranty fund ($250-300K per owner per carrier). For both, no major insurer (AM Best A-rated) has defaulted on MYGA obligations in the modern era.
TIPS are the alternative inflation-protection tool. Unlike I-Bonds: no annual purchase cap, traded on secondary market, annual tax on inflation adjustments (phantom income), available inside IRAs. For lump-sum inflation protection above I-Bond caps, TIPS are the answer.
No. Personal TreasuryDirect only. To get inflation protection inside an IRA, use TIPS or TIPS ETFs (SCHP, VTIP, TIP).
I-Bonds: 12-month minimum hold, then 1-3 days to redeem. MYGAs: 10% per year free withdrawal anytime; full surrender takes 10-30 business days with surrender charge.
Usually a MYGA-heavy allocation for the lump sum (locked 5-7 years) plus annual I-Bond contributions for inflation hedge. The 65-year-old has a known income-need horizon (typically 90-95+ years lifespan), and MYGAs match that with rate certainty while I-Bonds provide CPI protection.
This review reflects publicly available Treasury auction results, TreasuryDirect documentation, and approximate market yields as of the date stated above. Treasury yields change daily; current yields differ from prior auctions and may differ from those shown here. This article is general information for educational purposes; it is not a personalized recommendation, solicitation, or offer of any specific security or insurance product. U.S. Treasury securities are backed by the full faith and credit of the United States Government. MYGA references compare Treasury yields against approximate rates from A-rated insurance carriers as of the date stated; carrier rates change monthly. State guaranty fund coverage on annuities is provided by the state insurance department and varies by state (typically $250,000-$300,000 per owner per carrier). Hans Goldstein is an independent licensed insurance producer (NPN 20602398) appointed with multiple A-rated annuity carriers; he is NOT a registered investment advisor, broker-dealer, or registered representative, and is not paid by the U.S. Treasury, TreasuryDirect, or any brokerage for this review. No compensation has been received from any third party in connection with this content. Always read the actual offering documents and consult a licensed advisor before purchasing any security or annuity. Tax discussion of 31 U.S.C. §3124 and Internal Revenue Code provisions reflects law as of 2026 and is subject to change.
Hans Goldstein is an Enrolled Agent, admitted to practice before the Internal Revenue Service. Not affiliated with or endorsed by the IRS. General education, not tax or legal advice for your situation.