I-Bond vs CD vs TIPS in 2026 — The Three "Safe" Choices Ranked Honestly
The three vehicles in one table
| Feature | I-Bond | CD (5-year) | TIPS (5-year) |
|---|---|---|---|
| Issuer | U.S. Treasury | Bank or credit union | U.S. Treasury |
| Current effective yield (mid-2026) | ~3.50% (fixed 1.30% + variable inflation) | ~4.30-4.50% | ~2.10% real + CPI |
| Inflation-adjusted? | Yes (interest) | No | Yes (principal) |
| Annual purchase limit | $10K per SSN + $5K via tax refund | None | None |
| Minimum hold | 12 months (mandatory); 3-mo penalty under 5 years | Term (3 mo-5 yr); EWP if early | No minimum; secondary market liquidity |
| Federal tax | Deferred until redemption | Annual on accrued interest | Annual on both interest AND inflation adjustment (phantom income) |
| State tax | Exempt | Fully taxable | Exempt |
| Insurance / guaranty | U.S. government | FDIC $250K / NCUA | U.S. government |
| Sales channel | TreasuryDirect.gov ONLY | Direct issuer or brokered | TreasuryDirect or brokerage |
I-Bond: the best of inflation protection at small scale
An I-Bond's interest rate has two components:
- Fixed rate: Set at purchase, locked for the life of the bond (30 years). 2026 fixed rate is approximately 1.30%.
- Inflation rate: Variable; reset every 6 months based on CPI-U. Approximate 2026 inflation rate component: ~2.10%.
Combined effective rate at mid-2026: ~3.50% (varies as inflation rate resets).
The killer feature: The fixed rate component, once locked in at purchase, persists for the life of the bond. An I-Bond bought in 2026 at 1.30% fixed rate will earn 1.30% real (above inflation) for 30 years — even if future fixed rates drop to 0%. This makes the timing of I-Bond purchases unusually important.
The hard constraints:
- $10,000 per year per SSN electronic limit + $5,000 via tax refund (paper form 8888)
- 12-month mandatory hold from purchase
- 3-month interest penalty if redeemed within first 5 years
- 30-year maximum maturity (interest stops accruing at 30)
The $10K limit makes I-Bonds a small-portfolio tool unless you stack via trusts/businesses/gift box (see our $10K workaround guide).
Best use case: A working-age investor who values inflation protection and tax deferral, has ~$10-30K of patient inflation-hedge money per year. Worst case: a retiree with $500K+ needing daily liquidity.
CD: the highest current yield for buy-and-hold
At ~4.30-4.50% for a 5-year CD or ~4.80% for the best brokered CDs, CDs offer the highest current pre-tax yield among the three. The yield is fixed at purchase; you know exactly what you'll earn.
The killer features:
- Yield locked in at purchase (CD is a fixed-rate contract)
- No annual purchase limit — deploy $1M if you want (split across institutions for FDIC coverage)
- FDIC insured to $250K per depositor per bank
- Available at every bank, credit union, and brokerage in America
The constraints:
- Fully taxable each year as ordinary income on accrued interest (1099-INT in January)
- No state tax exemption
- No inflation protection — a 4.30% CD during 5% inflation loses real purchasing power
- Early withdrawal penalty (typically 90 days to 365 days of interest)
The biggest hidden cost of CDs for retirees: annual 1099-INT income raises MAGI, which can push you into a higher IRMAA bracket. A $500K CD at 4.30% generates $21,500 of annual interest income — potentially the difference between IRMAA bracket 1 and bracket 2 for a single retiree.
See our brokered CD vs bank CD vs MYGA for the full ranking.
TIPS: inflation-adjusted Treasury with phantom income
Treasury Inflation-Protected Securities (TIPS) pay a fixed coupon on a principal that adjusts with CPI-U inflation. As inflation rises, both the principal (and therefore the dollar coupon) rise. As inflation falls, principal can decrease (but no lower than the original face value at maturity).
2026 5-year TIPS auction yield: ~2.10% real (real means "above inflation"). Combined with current ~2.5% CPI = ~4.60% nominal yield in real time.
The killer feature: Principal adjusts with inflation. If you hold a 5-year TIPS through a high-inflation period (say, 4% average inflation), the principal grows roughly 22% over the term — on top of the coupon. This provides genuine inflation insurance at any scale.
The phantom income trap: The inflation adjustment to TIPS principal is taxable in the year it accrues — even though you don't receive the cash until maturity. This is "phantom income." You owe federal tax now on money you don't receive for years.
For this reason, TIPS belong in tax-advantaged accounts (Traditional IRA, Roth IRA, 401(k)) where the phantom income doesn't matter. Holding TIPS in a taxable brokerage forces you to fund the tax bill from other sources.
The state-tax win: Like all Treasuries, TIPS interest and inflation adjustments are state-tax-exempt — helpful for CA/NY/NJ residents who hold them in taxable accounts despite the phantom-income drawback.
Side-by-side 5-year math
Scenario: $50,000 to invest for 5 years. CA resident, 22% federal bracket. Assume 3% average inflation, 2% Fed funds rate over the period.
| Vehicle | 5-yr nominal growth | Real growth (vs inflation) | 5-yr after-tax growth | Notes |
|---|---|---|---|---|
| I-Bond (1.30% fixed + 2.5% avg inflation) | ~$11,500 | ~$3,400 real | ~$9,200 (no annual tax; fed-deferred) | Capped at $10K/yr purchase — can't put full $50K in I-Bonds in one year |
| 5-year brokered CD at 4.50% | ~$12,300 | ~$4,200 real | ~$8,700 (annual tax on interest) | CA state tax adds $1,140 drag over 5 years |
| 5-year TIPS at 2.10% real | ~$13,700 (incl inflation adj) | ~$5,600 real (guaranteed) | ~$10,700 in IRA / ~$9,200 taxable (phantom income drag) | State-tax-exempt; phantom income hurts in taxable |
| 5-year MYGA at 5.60% | ~$15,700 | ~$7,600 real | ~$15,700 (no tax until withdrawal) | Insurance company risk (state guaranty fund); not FDIC |
The MYGA wins on after-tax return because of the deferral. The I-Bond wins on inflation protection per dollar at the limit. The CD wins on pure simplicity. TIPS wins on inflation insurance at large scale but only in tax-advantaged accounts.
The honest ranking by use case:
- Small inflation hedge ($10K-$30K/yr): I-Bond. Nothing else can match the fixed-rate-locked-for-30-years inflation insurance.
- Pure yield 1-2 year horizon: Brokered CD or high-yield T-bill. Simple, predictable.
- Inflation hedge at scale ($100K+): TIPS, but inside an IRA. Avoid the phantom income in taxable.
- Maximum after-tax growth, 3-7 year horizon: MYGA. Beats all three on after-tax return for the duration.
The portfolio role of each
None of these three is "the answer." They play different roles:
I-Bond: the inflation insurance bucket
Treat I-Bonds like flood insurance — you buy a small amount each year (up to the $10K limit) and let them stack. Over 10 years, a couple stacking maximum I-Bonds builds $200K+ of inflation-protected reserves. Best for the "true emergency fund + inflation hedge" portion of cash savings.
CD: the predictable income bucket
For known future expenses (college tuition, car purchase, downsizing transition), a CD that matures on the needed date is unbeatable for predictability. Match maturity to spending date.
TIPS: the institutional inflation hedge
At $100K+ inside an IRA, TIPS provide inflation protection that I-Bonds can't deliver at scale. Best for retirees with significant IRA balances worried about a 1970s-style inflation period.
MYGA: the "fixed income that actually pays you" bucket
The MYGA isn't on the "three safe choices" list typically because it's an insurance product, not a Treasury or bank product. But for after-tax retiree returns over 3-7 year horizons, the MYGA beats all three of these vehicles. The trade-off: state guaranty fund coverage instead of FDIC; 7-10 year lock instead of 5.
Related reading
- I-Bond $10K limit workarounds
- How to buy on TreasuryDirect
- Jumbo CD vs MYGA
- Brokered CD vs bank CD vs MYGA
- VUSXX Vanguard Treasury MMF
Want my independent take on whether this fits your situation?
I'm Hans Goldstein — independent licensed insurance producer (NPN 20602398), appointed with multiple A-rated carriers. I run side-by-side comparisons against CDs, MYGAs, Treasuries, and MMFs every week for retirees and pre-retirees. Tell me what you're considering and I'll send back a written comparison.
Hans Goldstein · 213-414-2808 · NPN 20602398, independent licensed insurance producer appointed with multiple A-rated carriers
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FAQ
Q: Is an I-Bond better than a 5-year CD?
A: Depends on your time horizon and tax bracket. For 12-month money in a high-tax state, the CD wins on pre-tax yield but I-Bond wins on after-tax (state-exempt + federal-deferred). For 5+ year money, the I-Bond's inflation protection becomes valuable. For balances over $10K, CDs win on scalability.
Q: Can I buy TIPS through TreasuryDirect?
A: Yes, at the TIPS auction. Also available on the secondary market through any brokerage (Fidelity, Schwab, Vanguard). Auctions happen 4-6 times per year for various maturities.
Q: Why is phantom income bad?
A: It means you owe tax on money you haven't received. For a TIPS in a taxable account during high inflation, you could owe $2,000 of federal tax on inflation adjustments that don't pay out in cash until maturity. You need to fund the tax bill from other sources.
Q: Are I-Bonds better than savings accounts?
A: Better long-term inflation-protected return; worse short-term liquidity. I-Bonds are illiquid for 12 months and lose 3 months interest if redeemed before 5 years. Savings accounts are daily-liquid but lose to inflation.
Q: Can I hold I-Bonds in an IRA?
A: No. I-Bonds can only be held in personal TreasuryDirect accounts (individual or entity). They cannot be held in IRAs or 401(k)s.
Q: Do I get a 1099 for I-Bond interest?
A: Only when you redeem the bond. Interest accrues tax-deferred until redemption (or 30-year maturity). At redemption, you receive a 1099-INT for all the accumulated interest in that year.
Q: Can I gift I-Bonds to my children?
A: Yes. I-Bonds can be purchased as gifts via TreasuryDirect's "Gift Box" feature. The bond is registered to the recipient's SSN (so doesn't count against your $10K limit), held in your account until delivery, and delivered when ready. This is a key part of the I-Bond stacking strategy.
Q: What happens if I die holding I-Bonds?
A: The bonds transfer to your named beneficiary or estate. The accumulated interest becomes taxable to whoever inherits, in the year they redeem. Beneficiary can choose to redeem immediately or hold to maturity.
Disclosure
This article is general educational information, not personalized financial, tax, or legal advice. All rates, IRS limits, Social Security PIA factors, IRMAA brackets, FDIC/NCUA coverage, and state guaranty fund coverage figures are current as of the publication date and subject to change. IRMAA brackets and Roth/Traditional IRA limits cited reflect IRS guidance for 2026 and may be updated by the IRS or SSA; confirm current figures at irs.gov and ssa.gov before acting. Hans Goldstein is an independent licensed insurance producer (NPN 20602398) appointed with multiple A-rated annuity carriers; he does not sell bank CDs, money market funds, or Treasury securities and is not affiliated with any bank, brokerage, or government agency discussed. No compensation has been received from any third party in connection with this article. Bank CDs are FDIC-insured deposit products; credit union share certificates are NCUA-insured; money market funds are SEC-regulated investment products with no FDIC coverage; Treasuries are direct obligations of the U.S. government; MYGAs are insurance contracts backed by carrier balance sheets and state guaranty associations. These are different product categories with different protections, tax treatments, and trade-offs. Always confirm current rates and tax law with the issuer or a CPA before acting.