Invesco BulletShares 2028 Municipal Bond ETF (BSMS)

BSMS owns municipal bonds scheduled to mature around 2028, providing tax-exempt income monthly while the fund naturally expires as its bonds reach their payoff date.

The Bullet Structure and Its Appeal

The appeal of BSMS lies in its simplicity and finality. Unlike most municipal bond funds, which intend to operate in perpetuity — rolling from one bond to the next across decades — BSMS is built to wind down. As 2028 arrives, the portfolio matures, the fund shrinks, and eventually it closes or merges. There is no ongoing reinvestment risk, no perpetual need to find new bonds to replace maturing ones, no slow style drift as the manager’s priorities or the bond market changes. You buy BSMS knowing precisely when your money will come home.

The underlying bonds

BSMS holds investment-grade municipal bonds issued by cities, counties, states, school districts, and other public borrowers across the United States. These bonds finance the backbone of public infrastructure: schools, water treatment plants, roads, courthouses, libraries, transit systems. The quality of credit varies from very strong (triple-A rated states and major cities) to solid but more vulnerable (smaller municipalities or those with tighter budgets). Collectively, the portfolio is well-diversified: no single state dominates, no single issuer is large, and the bonds come from a broad mix of revenue sources.

Some bonds are general-obligation bonds, backed by the full faith and credit of the issuer — meaning the issuer can raise taxes if needed to pay bondholders. Others are revenue bonds, backed only by specific revenue streams. A school district’s bonds might be backed by property tax; a transit authority’s bonds might be backed by fares. This mix is deliberate — it spreads the dependency across different economic forces.

Why municipal bonds pay tax-free interest

Municipal bonds exist partly because of history and partly because of public policy. Historically, the federal government wanted to help states and cities finance public projects without imposing heavy direct taxes. So Congress granted an exemption: interest paid by state and municipal bonds is free from federal income tax. Most states extend the exemption to in-state bondholders for state tax too. Because of that tax break, municipal bonds pay lower yields than taxable bonds of equivalent credit quality. A municipal bond paying 3 percent, for example, might be worth more to a high-income earner than a corporate bond paying 4.5 percent, because the muni’s interest is tax-free.

BSMS’s distributions are tax-exempt, which is the primary reason to buy the fund in a taxable account. In a tax-sheltered retirement account, the tax exemption is worthless — and BSMS would be a poor choice.

Monthly distributions and their source

BSMS pays distributions every month. The underlying bonds pay coupons semi-annually or quarterly; BSMS collects those coupons, accrues the interest between dates, and distributes it monthly to shareholders. The distributions are tax-exempt. As bonds mature, they return principal; this principal return shrinks the fund’s net asset value but is not a taxable distribution. Over the life of the fund, as one bond after another matures, the NAV per share falls. This is expected and correct — it reflects the fact that the bonds are being paid off and the principal is being returned.

The amount of the monthly distribution changes over time, particularly as you approach 2028. Early in the fund’s life, distributions might be stable; as maturity approaches and bonds expire, the remaining portfolio shrinks, and per-share distributions may rise (if you have fewer shares splitting the same interest income) or fall (if the fund’s total assets are shrinking faster than shares are redeemed).

Costs and liquidity

BSMS charges a low expense ratio, well below 0.20 percent annually, typical of the Invesco BulletShares suite. This is competitive with other municipal bond ETFs and far lower than active management of a similar portfolio would cost. The fund trades on a stock exchange, so shares can be bought or sold any business day during market hours. Bid-ask spreads are typically tight — often less than 0.01 percent — because the fund is reasonably popular and liquid.

Risks unique to munis and maturity-bound funds

The central risk is credit risk: an issuer could default, fail to pay interest, or struggle to repay principal on time. This is less common in municipal bonds than in corporate bonds — municipalities have taxing power and decades of track records — but it happens. If a major issuer in BSMS’s portfolio faces financial stress or defaults, the fund’s value drops.

Concentration risk appears if the portfolio is overweight a particular state or region. A state budget crisis, a regional recession, or a drop in real-estate values in a key jurisdiction can pressure returns. BSMS’s diversification across states and issuers reduces this, but does not eliminate it.

Interest-rate risk is real. If rates rise after you buy BSMS, the prices of existing bonds fall, because new bonds will pay higher coupons. If you need to sell shares before 2028, you may realize a loss. If rates fall, you gain. This risk is strongest early in the fund’s life and weakens as the maturity date approaches — the bonds inexorably move toward par value.

Finally, there is reinvestment risk: the risk that in 2028, when your money comes back, interest rates are lower and your reinvestment options are less attractive than they are today. You have no control over this, and it is one reason to diversify across multiple maturity dates rather than betting everything on a single year.

Who is BSMS for?

BSMS suits high-income, taxable-account investors with a time horizon around 2028. Someone who knows they will need a sum of money in late 2027 or early 2028 — to retire, to buy a house, to pay for college — can use BSMS to set aside funds and collect tax-free income in the interim. The monthly distributions provide spending money or reinvestment opportunity. The defined maturity eliminates doubt about when the portfolio ends.

BSMS is not ideal for long-term buy-and-hold investors (use a perpetual muni fund), for investors in low-tax-bracket situations (the tax exemption has limited value), for tax-sheltered accounts (where the tax exemption is irrelevant), or for very conservative investors who cannot tolerate any default risk. It is also not optimal for someone without a clear goal for when funds will be needed.

Researching BSMS

Read the prospectus and fact sheet on Invesco’s website. The prospectus details the fund’s investment policy, the types of bonds allowed, the maturity bands, and the risks. The fact sheet shows the current yield, the expense ratio, holdings by state and by issuer type (general-obligation vs. revenue), and recent performance. Examine the top 10 holdings to see which issuers are largest and research their credit quality. Look for any major issuers in economic distress. Monitor the fund’s distribution history: stable distributions suggest stable credit, while falling distributions might signal deterioration. Finally, follow broad municipal-bond market news; sector-wide shocks can affect all munis.