Northern Trust Tax-Exempt Bond ETF (TAXT)

A municipal bond is a contract: the issuer borrows, and you wait — earning interest free of federal tax along the way.

Northern Trust’s Tax-Exempt Bond ETF takes that contract and offers it in diversified form. TAXT is not a niche fund; it is a broad-market tracker of investment-grade municipal bonds across the full spectrum of maturities, from short-term (one to three years) through long-term (20+ years). The fund holds hundreds of municipal obligations issued by states, cities, and special-purpose entities across the country, each with its own story — a school district financing renovation, a state highway authority building roads, a hospital system borrowing for expansion. Bundled together, they form a diversified proxy for the overall US municipal-bond market.

The fund’s appeal rests on simplicity and tax efficiency. Federal tax on municipal-bond interest is foregone entirely; state tax is waived for bonds issued in the bondholder’s home state. This matters enormously for high-income earners. A physician or entrepreneur in New York paying federal, state, and city tax faces a top rate above 50 percent in some years. A 4 percent municipal yield becomes worth more than 8 percent in pre-tax taxable-bond yield to such a person. The appeal vanishes for those in low tax brackets or tax-sheltered accounts.

The fund’s portfolio spans maturities, so TAXT’s price volatility is moderate to moderate-high depending on where the interest-rate cycle sits. When rates are low, the fund holds many longer-dated bonds that are sensitive to rate moves. When rates rise, those bonds fall in value. A 2 percent move in yields can mean a 10 percent swing in share price for a fund holding many 20-year bonds. This is not a flaw; it is the price of accessing a broad slice of the municipal market. An investor uncomfortable with such swings should look toward shorter-maturity funds.

The credit quality bar is investment-grade: TAXT holds only bonds rated BBB- or better by major rating agencies. This rules out the highest-risk municipal debt but includes the vast bulk of the market. Real credit risk exists even within investment-grade territory. A municipality facing fiscal deterioration can see its bonds downgraded and traded at wider spreads, hurting the fund’s value. The 2008 financial crisis took several supposedly-solid municipals into distress. The pandemic created uncertainty nationwide. These are real but infrequent events in the grand scheme.

The fund’s construction is mechanical. It tracks a municipal bond index, rebalancing to stay aligned with it as bonds mature and new issuances enter. Northern Trust executes this quietly in the background. The expense ratio is minimal — not much more than spare change. The fund trades throughout the day like a stock, providing liquidity that owning individual municipal bonds does not.

TAXT is suitable for people in higher tax brackets seeking tax-free income with a longer time horizon who can tolerate the interest-rate sensitivity of a broad-maturity municipal portfolio. It is not suitable for those in low brackets, for investors with a very short time horizon, or for anyone who cannot tolerate mark-to-market losses on their municipal allocation. The fund’s prospectus details the index it tracks, its maturity distribution, and its credit-quality breakdown. Reading the factsheet and prospectus, an investor can see exactly what maturity bands are represented and make a judgment about interest-rate risk. The relevant question is whether the tax-free income TAXT offers, combined with the diversification of holding hundreds of municipal issuers, justifies the price volatility that comes from holding bonds across the full maturity spectrum.