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I Bonds and TIPS: Inflation-Protected Savings Options

Learn about government savings options that protect your money from inflation.

I Bonds and TIPS savings bonds

When spikes, suddenly everyone wants to know about I Bonds and TIPS. These government-backed securities offer something unique: protection against inflation. Here's how they work and when they make sense for your portfolio.

What Are I Bonds?

I Bonds (Series I Savings Bonds) are savings bonds sold by the U.S. Treasury that earn interest based on a combination of:

  1. Fixed rate: Set when you buy, stays constant
  2. Inflation rate: Adjusts every 6 months based on CPI

Current mechanics:

  • Interest = Fixed rate + Inflation rate
  • Rate adjusts May 1 and November 1
  • Interest compounds semiannually
  • Your principal is always protected

Pro Tip

I Bonds made headlines in 2022 when their rate hit 9.62%. While rates fluctuate, they always track inflation, providing real protection.

I Rules and Limitations

Purchase limits:

  • $10,000 per person per year (electronic)
  • Additional $5,000 with (paper)
  • Can buy for children, spouse, trusts

Holding period:

  • Must hold at least 1 year
  • Redeem before 5 years: lose last 3 months interest
  • After 5 years: no penalty

Where to buy:

  • TreasuryDirect.gov (only place for electronic I Bonds)
  • Paper I Bonds via tax refund only

I Bond Strategies

Emergency Fund Supplement

  • After 1 year, becomes accessible
  • Earns more than savings accounts
  • Maintains purchasing power

Short-Term Goals (3-5 years)

  • Inflation protection for known future expenses
  • Better than CDs during high inflation
  • savings, major purchases

Part of Bond Allocation

  • Replaces some traditional bonds
  • Inflation protection regular bonds lack
  • Tax-deferred growth

When inflation spiked in 2022, Carlos bought $10,000 in I Bonds earning 9.62%. His high-yield savings was paying 1%. Even after rates adjusted, his I Bonds outperformed and protected his purchasing power while he saved for a home down payment.

What Are TIPS?

TIPS (Treasury Inflation-Protected Securities) are Treasury bonds whose principal adjusts with inflation:

How they work:

  • Face value increases with inflation (CPI)
  • Fixed paid on adjusted principal
  • At maturity, receive greater of adjusted or original principal

Example:

  • Buy $1,000 TIPS at 1% interest
  • Inflation is 3%
  • After 1 year: Principal = $1,030, interest paid on $1,030 = $10.30
  • Total value: $1,040.30 (vs. $1,010 from non-TIPS)

TIPS vs. I Bonds Comparison

FeatureI BondsTIPS
Where to buyTreasuryDirect onlyBrokerages, Treasury
Purchase limit$10,000/yearUnlimited
Maturities30 years5, 10, 30 years
1-year lockupTrade anytime
Tax treatmentFederal tax (defer until redemption)Federal tax annually on inflation adjustment
Minimum$25$100 (auction), $1 (funds)
Interest rate typeFixed + variableFixed on adjusting principal

When to Choose I Bonds

I Bonds are better when:

  • You want state/local tax exemption
  • You prefer tax deferral
  • You have under $10,000/year to invest
  • You don't need immediate liquidity
  • You want simplicity

I Bond drawbacks:

  • Purchase limits
  • 1-year lockup
  • Must use TreasuryDirect (clunky website)
  • Not in investment accounts

When to Choose TIPS

TIPS are better when:

  • You want to invest more than $10,000
  • You need liquidity
  • You want TIPS in a retirement account (tax-advantaged)
  • You're using TIPS funds/ETFs

TIPS drawbacks:

  • Phantom tax (taxed on inflation adjustment you haven't received)
  • Prices fluctuate (can lose money if sold before maturity)
  • More complex

Do This

For most individual investors, max out I Bonds first ($10,000), then consider TIPS or TIPS funds for additional inflation protection.

TIPS Funds and ETFs

If you want TIPS exposure beyond I Bonds:

Popular options:

  • Vanguard Short-Term TIPS (VTIP)
  • iShares TIPS Bond ETF (TIP)
  • Schwab U.S. TIPS ETF (SCHP)

Advantages of funds:

  • No purchase limits
  • Liquidity
  • Can hold in IRA (avoids phantom tax)
  • across maturities

Considerations:

  • Expense ratios (usually low, 0.03-0.20%)
  • Price fluctuates with interest rates
  • Not guaranteed to match inflation perfectly

Building an Inflation-Protected Portfolio

Conservative Approach

  • I Bonds: $10,000/year
  • High-yield savings for emergency fund
  • Short-term TIPS fund for additional bonds

Moderate Approach

  • I Bonds: $10,000/year
  • TIPS: 20-30% of bond allocation
  • Stocks: 60-70% of portfolio (long-term inflation hedge)

Aggressive Approach

  • I Bonds for near-term needs
  • Mostly stocks (best long-term inflation hedge)
  • Minimal traditional bonds

I Bond Step-by-Step Purchase

Quick Win

Ready to buy I Bonds? Here's how:

  1. Go to TreasuryDirect.gov
  2. Create an account (you'll need Social Security number, bank info)
  3. Navigate to "BuyDirect"
  4. Select "Series I"
  5. Enter amount ($25 minimum, $10,000 maximum)
  6. Complete purchase
  7. Wait 1 year before redemption if needed

Tax Considerations

I Bonds

  • Federal tax only (no state/local)
  • Tax deferred until redemption
  • Can be tax-free if used for education (income limits apply)

TIPS

  • Federal tax on interest AND inflation adjustments annually
  • Hold in IRA/401(k) to avoid phantom tax
  • No state/local tax

Common Questions

Q: What happens if we have deflation? I Bonds: Rate can't go below zero; you won't lose principal TIPS: Principal can decrease, but you get at least original principal at maturity

Q: Should I bonds replace my emergency fund? Not entirely. Keep 1-3 months in accessible savings; I Bonds can back the rest after the 1-year lockup.

Q: Are I Bonds worth it when inflation is low? Less compelling than during high inflation, but still protect purchasing power. The fixed rate component provides some return regardless.

Q: Can I buy I Bonds for my kids? Yes! Each child can have their own TreasuryDirect account with their own $10,000 annual limit.

When NOT to Use Inflation-Protected Securities

Avoid This

  1. For money needed within 1 year - I Bonds have lockup
  2. As your only investment - Stocks still beat inflation long-term
  3. To chase high rates - Rates fluctuate; buy for protection, not speculation
  4. Ignoring tax implications - TIPS in taxable accounts create tax headaches

The Bottom Line

I Bonds and TIPS fill a specific role: inflation-protected savings for money you'll need in the medium term (1-10 years). They're not:

  • A replacement for stocks (long-term growth)
  • A replacement for emergency savings (need immediate access)
  • A get-rich-quick investment

But for protecting purchasing power on money you're setting aside for specific goals, they're valuable tools—especially I Bonds with their simplicity and tax benefits.

Key Takeaways

  • 1I Bonds earn a rate that adjusts with inflation, protecting your purchasing power
  • 2You can buy up to $10,000 in I Bonds per year through TreasuryDirect.gov
  • 3TIPS are similar but have no purchase limit and trade on the open market
  • 4Hold TIPS in tax-advantaged accounts to avoid 'phantom tax' on inflation adjustments
  • 5I Bonds work well for goals 1-5 years out; stocks remain the best long-term inflation hedge