MUB vs BND: Head-to-Head Comparison

Side-by-Side Comparison

Key Differences Between MUB and BND

MUB (iShares National Muni Bond ETF) is a municipal bond fund managed by BlackRock. MUB invests in investment-grade municipal bonds issued by U.S. state and local governments, which are exempt from federal income tax. This tax advantage makes munis particularly attractive for investors in higher tax brackets. Beginners should understand that MUB's stated yield understates its true benefit because the income is tax-free at the federal level, effectively boosting your after-tax return.

BND (Vanguard Total Bond Market ETF) is a u.s. intermediate-term bond fund managed by Vanguard. BND provides exposure to the entire U.S. investment-grade bond market, including government, corporate, and mortgage-backed bonds. Bonds generally provide stability and income to a portfolio, acting as a cushion when stocks decline. Beginners often add BND to their portfolio to reduce overall volatility and provide steady income, with the typical rule of thumb being to hold your age in bonds as a percentage of your portfolio.

The most notable differences are in fees (0.07% vs 0.03%), number of holdings (5,600 vs 11,286), and 5-year returns (1.20% vs -0.50%).

Holdings Overlap Analysis

MUB and BND share only 0% of their top holdings. These funds are quite different, making them complementary choices if you want broader market coverage.

Cost Comparison Over Time

If you invest $10,000 and hold for 20 years (assuming 8% annual returns):

Over 20 years, the fee difference amounts to $342 on a $10,000 investment. BND saves you more in fees over time.

Which One Should a Beginner Choose?

Choose MUB if: You want investors in the 32% or higher federal tax bracket seeking tax-efficient fixed income, retirees who want tax-free monthly income to keep more of their investment returns, those looking to reduce overall portfolio volatility with a low-risk bond allocation. It's managed by BlackRock with an expense ratio of 0.07%.

Choose BND if: You want conservative investors who want portfolio stability and predictable income, investors approaching or in retirement who need to reduce portfolio volatility, anyone building a balanced stock-and-bond portfolio. It's managed by Vanguard with an expense ratio of 0.03%.

Can You Own Both MUB and BND?

Absolutely! With only 0% overlap, MUB and BND complement each other well. A simple portfolio might allocate 60% to one and 40% to the other, or you could pair them with a bond ETF like BND for a complete three-fund portfolio.

Frequently Asked Questions