Generated July 2026 from current fund data.
Overview
BND and IEF are both broad U.S. fixed-income ETFs paying monthly distributions, but they track fundamentally different bond universes. BND holds the entire investment-grade bond marketβTreasuries, corporates, mortgage-backed securities, and agenciesβwhile IEF focuses exclusively on intermediate-term Treasury bonds with 7β10 year maturities. That structural difference drives their yield, duration, and credit-risk profiles.
How they differ
BND's broadest distinction is its diversified exposure across all investment-grade sectors, which generates a 4.01% distribution rate supported by corporate and mortgage spreads alongside Treasuries. IEF, by contrast, holds only government bonds with no credit risk, paying 3.97%βa narrower yield that reflects pure duration and Treasury term premium rather than credit compensation. On fees, BND's 0.03% expense ratio is among the lowest in the industry, while IEF charges 0.15%, a meaningful four-fold difference on large positions. BND's $158B in assets dwarfs IEF's $46.9B, and BND's beta of 0.98 suggests slightly lower interest-rate sensitivity than IEF's 1.17, consistent with BND's shorter average duration from its mortgage and floating-rate holdings.
Who each is best for
BND: Fits investors seeking one-fund bond market exposure with minimal credit selection, benefiting from both Treasury and spread-based income while keeping costs extremely low.
IEF: Designed for investors who want government-only bond exposure and accept higher interest-rate sensitivity in exchange for eliminating credit risk and corporate default uncertainty.
Key risks to know
- Credit spread compression: BND's 4.01% yield depends on corporate and mortgage spreads staying wide enough to offset Treasuries; if spreads tighten sharply, distribution rate could decline while the fund's total return remains weak.
- Intermediate-rate duration: IEF's 1.17 beta reflects meaningful sensitivity to 7β10 year Treasury yield moves; a rapid rise in long-term rates can reduce NAV significantly, making it less stable than shorter-duration alternatives.
- Duration mismatch in BND: BND blends very-short mortgage and floating-rate bonds with longer corporate bonds, creating a blended duration that may not match investor expectations based on distribution rate alone.
- Expense ratio drag on IEF: The 0.15% annual fee compounds over time, especially if interest rates remain flat or fall modestly; on a $100,000 position, it costs $150 annually versus BND's $3, a meaningful gap for passive fixed-income allocations.
Bottom line
If you want broad bond-market diversification and the lowest possible fees, BND's $158B scale and 0.03% expense ratio stand out. If you prioritize government-only safety and accept higher interest-rate volatility, IEF delivers Treasury-specific exposure, though at a steeper cost. Both pay monthly and track liquid indices, so the choice hinges on whether you value spread income and cost efficiency (BND) or government exclusivity (IEF).
AI-generated analysis for educational purposes only. Verify important details independently; past performance does not guarantee future results.