TLT vs IEF: The Only Difference Is How Long You Wait
Both hold US Treasuries, both come from iShares, both charge 0.15%. TLT buys bonds maturing in 20 years or more, IEF buys 7 to 10 year notes. That single choice decides how hard each one moves when rates change.
TLT (iShares 20+ Year Treasury Bond ETF) and IEF (iShares 7-10 Year Treasury Bond ETF) are the same product in every way that usually separates two funds. Identical issuer, identical 0.15% expense ratio, and identical credit, since both hold obligations of the US Treasury and neither carries meaningful default risk. What differs is maturity, and through it duration, which is the measure of how much a bond price moves when yields move. TLT holds the long end, so a one percentage point change in yields moves it far more than the same change moves IEF. That works in both directions and is the entire reason to prefer one over the other. TLT is the instrument people reach for when they want a position on rates falling, and it is also the one that fell hardest when rates rose. IEF gives a materially smaller version of the same exposure. Neither is a cash substitute: for that, the shorter end of the curve is a different conversation, covered in SGOV vs BIL.
Both funds trade commission-free at every major brokerage. How the major brokerages compare →
📋 TLT vs IEF: Key Facts Side by Side
| Metric | TLT | IEF |
|---|---|---|
| Fund Name | iShares 20+ Year Treasury Bond ETF | iShares 7-10 Year Treasury Bond ETF |
| Issuer | iShares | iShares |
| Tracks Index | ICE US Treasury 20+ Year | ICE US Treasury 7-10 Year |
| Expense Ratio | 0.15% | 0.15% |
| Cost per $10K/yr | $15.00 | $15.00 |
| AUM | $41.5B | $47.2B |
| Holdings | 40 | 12 |
| Inception | 2002 | 2002 |
| 1-Year Return | -4.01% | -3.04% |
| 3-Year Return | -0.26% | +3.59% |
| 5-Year Return | -7.77% | -1.52% |
| Dividend Yield | 4.75% | 3.96% |
| Holdings Overlap | See holdings overlap → | |
| Avg Bid-Ask Spread | 0.00% | 0.00% |
Expense ratio, AUM, and returns updated Aug 30, 2026 from ETF BFF database. Returns are annualised. Not investment advice.
📊 TLT vs IEF: Annualised Returns
Annualised returns (trailing, price-based). Past performance does not guarantee future results.
🎯 Which Fund Fits Which Investor?
- want broader diversification (40 holdings vs 12)
- want income and stability with lower portfolio volatility
- want income and stability with lower portfolio volatility
💰 What the Fee Difference Actually Costs
Adjust the numbers for your situation. This models each fund's expense ratio compounding against your balance over time.
Assumes a constant annual return reinvested, with each fund's expense ratio deducted yearly. Illustrative only; actual returns vary. Past performance does not guarantee future results.
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❓ TLT vs IEF: Frequently Asked Questions
New to ETF investing? See answers to the most common ETF questions →