JMST vs TAXS

JMSTAJPMorgan Ultra-Short Municipal Income ETF

TAXSANorthern Trust Short-Term Tax-Exempt Bond ETF

In short

JMST Munis without the long-end drama. JMST holds investment-grade municipal bonds with an average weighted maturity of two years or less and pays federally tax-exempt income monthly, for 0.18% a year.

TAXS Northern Trust's muni index fund keeps every bond under five years to maturity and charges 0.05%, a fraction of the typical muni ETF fee. Roughly 1,700 federally tax-exempt bonds, none of them AMT bonds, with interest paid monthly.

Stated mandate

JMST The fund seeks current income exempt from federal income tax while maintaining stability of principal. It primarily invests in investment-grade fixed-, variable-, and floating-rate municipal securities and seeks an average weighted maturity of two years or less.

TAXS The fund seeks to track, before fees and expenses, the price and yield performance of the ICE Short-term Focused Municipal Bond Index. It is designed for tax-exempt income through passively managed, investment-grade municipal bonds with short-term maturities.

Why people hold it

• JMST 0.18% a year, well under the 0.30% median for its muni cohort.
• The mandate targets an average weighted maturity of two years or less, so rate moves hit it far less than they hit long-dated muni funds.jpmorgan.com
• Roughly 1,600 investment-grade positions across fixed, variable and floating rate munis, so no single issuer carries the fund.
• A multi-billion-dollar fund that trades actively, which generally keeps the spread you pay to get in and out narrow.

• TAXS 0.05% a year sits at the low end of the muni aisle, where the typical fund charges several times that, and matches the fee on MUB, the category's iShares heavyweight.
• Index rules admit only investment-grade bonds with under five years left to final maturity, so the portfolio skips the long-end price swings that define all-maturity muni funds.flexshares.com
• About 1,700 bonds, all exempt from federal tax and screened to exclude alternative minimum tax paper, with income distributed monthly rather than accrued.flexshares.com
• Passive, sampled, and run by Northern Trust's municipal desk, which has managed muni portfolios for more than 30 years. The index does the picking, not a manager's hunch.flexshares.comnortherntrust.com

Worth knowing

• JMST Broad muni index funds go cheaper: VTEB and SCMB run 0.03%, MUB 0.05%. You are paying up for the ultra-short mandate.
• Short maturities cut rate risk, and they cut the extra income longer municipal bonds pay for carrying that risk. This is a stability-of-principal design.
• The stated exemption is from federal income tax. State and local treatment is a separate question that depends on where you file.

• TAXS It launched in 2025 and trades lightly next to muni mainstays like VTEB and MUB, so spreads can run wider and the track record is short.
• Federally tax-exempt is not tax-free. That interest can still be taxed by your state and city.flexshares.com
• Sub-five-year munis generally carry lower yields than longer maturity portfolios. That is the other side of the milder rate sensitivity.flexshares.com

Full JMST profile⁠

Full TAXS profile⁠