CMF vs SCMB

CMFAiShares California Muni Bond ETF

SCMBASchwab Municipal Bond ETF

In short

CMF The California-only corner of the muni market, indexed since 2007 and priced at 0.08%. CMF holds bonds issued by California and its municipalities, tracks an AMT-free index, and pays monthly.

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

CMF The Fund seeks to track an index of California municipal bonds. It uses representative sampling and generally invests in municipal securities issued by California and its municipalities.

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

• CMF 0.08% a year, a fraction of what the typical muni bond fund in its category charges. On a tax-exempt income stream, the fee is the part you actually control.
• The benchmark is the ICE AMT-Free California Municipal Index, so bonds whose interest counts toward the federal alternative minimum tax are screened out.ishares.com
• Follows that index tightly using representative sampling, and ranks among the strongest implementations in the muni ETF group.
• Running since 2007, with assets in the billions and cash paid out monthly.

• 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

• CMF One state's credit, one state's budget cycle. National muni funds (MUB, VTEB) spread tax-exempt exposure across the whole country instead.
• Moderately traded next to the national muni names, so limit orders earn their keep on bigger tickets.
• It is a bond portfolio, not a savings account: prices move as interest rates move, and longer maturities move most.

• 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 CMF profile⁠

Full SCMB profile⁠