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I-Bond Deposits and Rotation

I-Bonds Remain the Unsung Hero of My Financial Strategy

Capital Preservation, Tax Advantages, and Real-World Liquidity

When people talk about wealth building, the focus almost always turns to high-growth stocks, real estate, or whatever speculative asset is dominating the headlines. But throughout my life, one of the most reliable anchors in my portfolio has been U.S. Series I Savings Bonds.

I’ve relied on I-Bonds at several key milestones. Years ago, when I purchased an expensive car at a younger age, having a solid backstop of I-Bonds provided a recognized foundation in my net worth. More recently, when my wife and I needed to handle repairs on her high-tech Tesla, I didn't have to stress about liquidating stocks during a market downturn or pulling from high-interest debt. I looked at my redeemable I-Bonds and was able to quickly pull the cash needed to settle the bill.

The Thesis:

The true value of an I-Bond isn’t just its headline yield—it’s the combination of capital preservation, unique state/local tax advantages, and guaranteed liquidity when you need it most.

1. Understanding the Two-Part Interest Rate

Series I Bonds earn interest based on a combined composite rate made up of two distinct components:

  • The Fixed Rate: Set by the Treasury when you purchase the bond, this rate stays the same for the entire 30-year life of the bond.
  • The Inflation Rate: A variable rate reset every six months (in May and November) based on changes in the Consumer Price Index (CPI-U).

Recent Historical Rate Snapshot

Issue Period Fixed Rate Variable Inflation Rate Composite Rate
Nov 2023 – Apr 2024 1.30% 3.94% 5.27%
May 2023 – Oct 2023 0.90% 3.38% 4.30%
Nov 2022 – Apr 2023 0.40% 6.48% 6.89%
May 2022 – Oct 2022 0.00% 9.62% 9.62%
Nov 2021 – Apr 2022 0.00% 7.12% 7.12%

2. Why the Surface Yield Doesn't Tell the Whole Story

If you simply compare an I-Bond’s nominal yield to a traditional CD or high-yield savings account (HYSA), you miss the primary tax advantage: I-Bonds are 100% exempt from State and Local income taxes.

In medium-to-high tax states, a 4.00% yield on an I-Bond effectively outearns a higher nominal yield on a fully taxable bank account once state taxes are factored in.

Security Over High-Risk Speculation

In financial markets, chasing 30%+ yield almost always requires accepting high risk. Stocks fluctuate, corporate bonds carry default risk, and private loans carry real downside danger. I-Bonds carry zero principal loss risk backed by the U.S. government. Furthermore, federal taxes are deferred until you actually redeem the bonds.

3. Practical Purchasing & Cash Management Strategies

Many investors use a simple timing trick to maximize returns: Purchase your I-Bonds near the very end of the month.

TreasuryDirect credits interest for the entire month regardless of whether you bought on the 1st or the 28th. By keeping cash in a high-yield savings account (like my Morgan Stanley HYSA currently yielding 3.75%) until the last few days of the month before transferring it to TreasuryDirect, you collect a full month of HYSA interest plus the full month of I-Bond interest.

4. Overcoming Purchase Limits with Trust Accounts

The main constraint with electronic I-Bonds is the $10,000 annual limit per Social Security Number (SSN) per calendar year. However, entity accounts—such as Legal Trusts—have their own separate $10,000 annual purchase limit.

By establishing designated trusts, investors can legitimately expand their annual allocation:

  • Michael Real Estate Trust ($10,000 / year limit)
  • Michael Car Maintenance Trust ($10,000 / year limit)
  • Children's / Education Trusts ($10,000 / year limit per trust)

Mind the rules: Money is strictly locked up for 12 months after purchase, and redemptions made between months 12 and 60 forfeit the last 3 months of interest.

5. Recalibrating: Trading 0.00% Fixed Rates for 0.90%+

During the 2021–2022 period, many of us accumulated I-Bonds carrying a 0.00% fixed rate. While the variable rate was high back then, that fixed component stays at 0.00% for 30 years. With newer issues offering a higher fixed floor (like 0.90%), it makes strategic sense to systematically redeem older 0.00% bonds (that passed the 5-year penalty-free mark) and reinvest into new bonds.

Rolling Over a $10,000 Position

YEAR 1 (Current Year)

Redeem $5,000 from Old 0.00% Fixed Bonds → Pay Federal Tax on Accrued Gains → Reinvest $5,000 in New I-Bond (0.90%+ Fixed Floor)

Remaining in Old 0.00% Bonds: $10,000
YEAR 2 (Next Calendar Year)

Redeem Final $5,000 from Old Bonds → Pay Federal Tax on Accrued Gains → Reinvest $5,000 in New I-Bond (0.90%+ Fixed Floor)

Result: Entire $10,000 upgraded to higher fixed rate floor while adhering to annual limits.

Ready to Explore I-Bonds?

To learn more about current interest rates or to open an account and start investing directly with the government, visit the official website.

Visit TreasuryDirect.gov →

Disclaimer: This blog post is for informational and educational purposes only and should not be construed as legal, tax, or financial advice. Investment strategies and tax consequences vary based on individual circumstances. Always consult with a qualified financial advisor or certified tax professional before making significant investment decisions.

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