Inflation-adjusted yield, only available via TreasuryDirect.
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Series I Savings Bonds is a inflation-linked savings bond in the bonds category regulated by SEC and MSRB. Founded in 1998 and headquartered in Washington, DC, operating for 28 years, it is most often used for dampening overall portfolio volatility.
Why people search for this
Lock in a predictable interest stream with less day-to-day volatility than equities.
Series I Savings Bonds fits best when you are dampening overall portfolio volatility, and specifically when want a predictable coupon schedule. It also suits investors who use bonds to dampen overall portfolio volatility.
It is not the right pick for someone who needs a fundamentally different product from a inflation-linked savings bond.
Series I Savings Bonds's headline cost is markup / markdown at Embedded in price; varies by broker. Secondary line items include custody (None at standard brokers). Always cross-check fees against the operator's current pricing page — schedules change without notice.
Series I Savings Bonds is registered with or supervised by SEC (verify on SEC EDGAR), MSRB (verify on MSRB EMMA), FINRA (verify on FINRA BrokerCheck). Regulatory registration is not a guarantee against loss — it means the firm operates under a defined rule-book and is subject to enforcement when it doesn't.
The closest peer to Series I Savings Bonds in this directory is 10-Year TIPS, also a inflation-protected treasury. On yield the two differ visibly — Series I Savings Bonds shows Inflation-adjusted, currently ~4.3%, while 10-Year TIPS shows Real ~1.9% + CPI. If you are torn, open both side by side in the compare tool to see every attribute laid out in one table.
| Attribute | Series I Savings Bonds | 10-Year TIPS |
|---|---|---|
| Yield | Inflation-adjusted, currently ~4.3% | Real ~1.9% + CPI |
| Maturity | 30 years (1-year min hold) | 10 years |
| Issuer | US Treasury | US Treasury |
| Rating | AA+ | AA+ |
Series I Savings Bonds is a inflation-linked savings bond in the bonds category, headquartered in Washington, DC. Inflation-adjusted yield, only available via TreasuryDirect.
Series I Savings Bonds is a US fixed-income instrument first available to retail investors in 1998 or earlier. The instrument pays scheduled interest and returns principal at maturity, subject to the credit profile noted in the attributes table. Most US brokers can transact it on request.
The table below lists every fee Series I Savings Bonds discloses in its current pricing schedule, drawn from the operator's own published pages. Compare line items against rivals in the bonds compare tool before settling on a primary account.
| Markup / markdown | Embedded in price; varies by broker |
|---|---|
| Custody | None at standard brokers |
This is the structured feature matrix MoneyMoodBoard editors track for every bonds listing. A green check means fully supported, an orange dash means conditional on tier or geography, and a red cross means the feature is unavailable today.
These are first-party reviews submitted by verified MoneyMoodBoard readers who actually use Series I Savings Bonds. The average rating is 4.6 of five across 220 ratings, with the distribution and individual write-ups visible below for context.
4.6 / 5
Based on 220 ratings
Seed review summarising public sentiment about Series I Savings Bonds: Inflation-adjusted yield, only available via TreasuryDirect. Users generally agree with the rating shown, with the trade-offs listed in the cons section being the most cited drawback.
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Before opening an account with Series I Savings Bonds, it helps to understand the category itself. The five short sections below explain how bonds work, who they suit, the main risks, where they fit in a plan, and the US regulatory rules.
Bonds are how governments and companies borrow. You lend principal up front, receive coupon payments along the way, and get your principal back at maturity if the issuer stays solvent.
Each bond has a face value, a coupon rate, and a maturity date. The market price changes daily as interest rates move, but the coupon and face value at maturity stay fixed.
Investors who want predictable income, lower volatility than stocks, or who are getting closer to retirement and want to lock in known cash flows.
When market interest rates rise, existing bond prices fall — that's interest rate risk. Corporate bonds also carry credit risk: the issuer can default. Inflation can erode the real value of fixed payments.
Bonds anchor most diversified portfolios as a stabilizer when stocks fall. A common rule of thumb sets the bond allocation roughly equal to your age, though risk tolerance and time horizon trump any rule. In retirement, bond ladders fund near-term spending without forcing equity sales in down markets.
Treasuries are issued by the Treasury Department; corporate and municipal bonds are SEC-registered with prospectuses on EDGAR. FINRA's TRACE system publishes corporate bond trade data. Munis offer federal tax exemption and, for in-state residents, often state and local exemption as well.
Quick definitions for terms used across bonds listings.
Short answers to the questions people most commonly type into search when researching Series I Savings Bonds. Each answer is composed from this listing's own data — regulator footprint, fees, headquarters, ratings — so it reflects the current state rather than a generic template.
These are the closest peers to Series I Savings Bonds inside the bonds category on MoneyMoodBoard. Open any card to compare fees, features, regulation and verified user reviews side by side, or add them to the compare tray to evaluate up to four together.
Inflation-protected Treasury
Principal indexed to CPI-U.
Long inflation-protected Treasury
Longest TIPS maturity.
Treasury Inflation-Protected Security
Principal adjusts with CPI — real-yield exposure.
All numeric values, regulatory statuses and license details on this page reference primary sources above. Verify before depositing funds — schedules and registrations change without notice.