MUNX vs SCMB

MUNXCAMG GW&K Muni Income ETF

SCMBASchwab Municipal Bond ETF

In short

MUNX A Boston bond boutique's muni playbook in an ETF wrapper. GW&K's team picks individual tax-exempt bonds across sectors, maturities and credit tiers, aiming at federally tax-free income instead of mirroring an index.

SCMB Schwab's take on the core muni sleeve: three basis points, thousands of AMT-free bonds from across the country, and a monthly distribution. Bottom-of-the-table pricing, no frills attached.

Stated mandate

MUNX The Fund seeks current income exempt from federal income tax while preserving capital. Capital appreciation is a secondary objective.

SCMB The fund seeks to track, before fees and expenses, the total return of an index representing the U.S. AMT-free municipal bond market.

Why people hold it

• MUNX Actively run rather than index-shadowing: managers can shift sectors, maturities and credit quality inside a muni market where many bonds trade by appointment.amgetfs.com
• At 0.29% a year, it charges a shade under the typical muni bond ETF while running an active book instead of a rules-based one.
• Clear job description: core intermediate US munis, federally tax-exempt income first, capital preservation alongside it, price appreciation only a secondary goal.amgetfs.com
• Income is designed to arrive monthly per the fund's filings, and the portfolio stays tightly inside that tax-exempt muni mandate with no side bets.

• SCMB Three basis points a year, against a 0.30% median for muni bond funds. Among the top-graded names in the category, only Vanguard's VTEB matches that fee.
• Follows the ICE AMT-Free Core U.S. National Municipal Index across thousands of bonds and issuers, so no single borrower or state drives the portfolio.
• Plain passive plumbing done well: it stays close to its index, trades actively, and pays monthly. One of the stronger implementations in the muni aisle.

Worth knowing

• MUNX Index munis undercut it sharply: VTEB and SCMB charge 0.03%. Active bond selection is the entire reason to pay the difference here.
• Launched in late 2025, so the record is short and trading has been light. Spreads can run wider than the big muni index funds, which makes execution matter.
• Payout timing has been uneven early on, and the exemption is federal only: state taxes and bonds subject to the AMT are still in play.aaii.com

• SCMB Launched in 2022, so its live record is shorter than muni staples like MUB and VTEB, even though the strategy is the same broad-market idea.
• Bond math still applies. This is a portfolio of municipal bonds, so share prices move opposite to interest rates.
• National in scope, not single-state like NYF, so it is not built around any one state's tax rules.

Full MUNX profile⁠

Full SCMB profile⁠