I Bonds vs TIPS: Which Inflation-Protected Investment Is Better? Inflation quietly eats your savings every year. Even 3% inflation cuts buying power in half in about 24 years. That risk makes I Bonds vs TIPS a key choice for safe investors in 2026. Both are U.S. Treasury securities. Both protect against rising prices. Yet they work in very different ways. This guide breaks down rates, taxes, limits, risks, and returns. You will learn how each option works today and which fits your goals for short term savings, retirement, and emergency funds. > I Bonds vs TIPS Definition: I Bonds vs TIPS is a comparison of two Treasury inflation-protected securities. I Bonds adjust with inflation and pay a fixed rate plus an inflation rate, while TIPS adjust principal with CPI and pay a fixed real yield. I Bonds vs TIPS at a Glance: Key Differences Both I Bonds and TIPS protect
you from inflation. They do it with different rules for buying, holding, and paying tax. This quick overview helps you see the trade-offs fast. If you want a simple snapshot, start here. Then read the deep dives below for rates and strategy. Purchase Limits and Access in 2026 You buy I Bonds only through TreasuryDirect. The limit is $10,000 per person per year in electronic bonds. You can add up to $5,000 in paper bonds with your tax refund. TIPS have no annual cap for most investors. You can buy them at Treasury auctions, through a broker, or in funds and ETFs. You can invest $100 or $1 million. That difference matters a lot. I Bonds work best for small to mid-size savers. TIPS work better for large portfolios and retirement accounts. Purchase limit — the max you can buy per year. I Bonds cap you low. TIPS let you
scale up with no cap. Returns and Inflation Protection Basics I Bonds pay a composite rate. It combines a fixed rate that stays for the life of the bond plus an inflation rate that resets every six months. As of May 2026, new I Bonds pay 3.39% annualized with a 1.10% fixed rate. TIPS pay a real yield. Your principal rises with CPI. You earn interest on that larger principal. As of early September 2026, the 10-year TIPS real yield sits near 2.10% according to the U.S. Treasury. Here is a simple example. You buy $10,000 in I Bonds at 3.39%. After one year you earn about $339 before tax. You buy $10,000 in 10-year TIPS at 2.10% real yield with 2.7% inflation. Your total return lands near 4.8% before tax. Choose I Bonds for simple inflation tracking and tax deferral Choose TIPS for market-based real yields and larger amounts
Use both if you want flexible short term and long term cover How I Bonds Work in 2026 I Bonds are savings bonds built for regular people. They are simple, safe, and backed by the U.S. government. You cannot lose principal if you follow the holding rules. They are ideal for emergency funds and education savings. They are not ideal for large retirement portfolios due to caps. I Bond Rates and Interest Rules I Bond interest has two parts. The fixed rate stays the same for up to 30 years. The inflation rate resets each May and November based on CPI-U. According to TreasuryDirect, the May 2026 composite rate is 3.39% annualized. It includes a 1.10% fixed rate. That fixed rate is high by history. From 2020 to 2021 the fixed rate was 0.00%. Interest compounds every six months. The Treasury adds it to your bond value monthly. You do
not get cash until you redeem. Key rules to know: Must hold at least 12 months. No early cash out at all Cash out before 5 years and you lose the last 3 months of interest Hold up to 30 years and keep earning inflation-adjusted interest Minimum buy is $25 for electronic bonds Deflation protection — I Bonds never pay below zero. Even if prices fall, your redemption value cannot drop due to deflation. Taxes and Best Uses for I Bonds I Bonds offer strong tax perks. Interest is exempt from state and local income tax. Federal tax is deferred until you cash out or the bond matures in 30 years. You may skip federal tax too for college costs. The education tax exclusion lets some families use I Bond interest tax free for tuition and fees. Income limits apply. As of 2025, phaseouts start near $100,000 for single filers.