TAFI vs TAXS

TAFIBAB Tax-Aware Short Duration Municipal ETF

TAXSANorthern Trust Short-Term Tax-Exempt Bond ETF

In short

TAFI Most muni funds own munis and nothing else. TAFI is an actively run short-duration muni portfolio with an escape hatch: up to 20% can sit in taxable bonds when those pay more on an after-tax basis.

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

TAFI The Fund seeks relative stability of principal together with a moderate after-tax return and income.

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

• TAFI The taxable sleeve is the point. Up to 20% can move into taxable bonds when they beat comparable munis after tax, a lever a pure muni index fund does not have.alliancebernstein.com
• Duration is targeted at one to three years, keeping rate-driven price swings modest next to intermediate and long muni funds.alliancebernstein.com
• A 0.27% fee undercuts the typical muni ETF even with a live team picking bonds. Active management here costs less than the cohort median.
• A multi-billion-dollar book spread across roughly 700 bonds, paying monthly, and among the smoother muni ETFs to trade in size.

• 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

• TAFI The mandate is deliberately loose: "relative stability of principal together with a moderate after-tax return and income." No index to hold it to, so outcomes ride on manager calls.
• Plain-vanilla index munis are far cheaper. VTEB and SCMB run 0.03%, so you are paying roughly nine times that for the active seat and the taxable sleeve.
• Income from the taxable portion is not federally tax-exempt, so the tax profile shifts with how the managers use that flexibility.alliancebernstein.com

• 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 TAFI profile⁠

Full TAXS profile⁠