Tax Playbook · Investment tax wins
The 0.2% that costs Californians thousands
Treasury income is usually free from state tax. But California, New York, and Connecticut only let a fund pass that break to you if 50% or more of its assets are in US government bonds, checked every quarter. The Bloomberg Aggregate sits at about 49.8% — 0.2% short — so on a $1M fund, a Californian pays about $2,825 a year in state tax on income that should have been free. The fix: split it up — hold Treasuries in their own fund and the rest in a separate credit fund.
Good for: Taxable-account investors in California, New York, or Connecticut who hold bond index funds.
Learn the basics
Recent articles & guides
- The Finance Buff: Claim State Tax Exemption From Treasuries in Funds and ETFs (2025 tax year)
- Vanguard: 2025 U.S. government obligations income information (confirms 50%-at-each-quarter-end rule for CA, CT, NY)
- Bogleheads: CA Rev & Tax Code §17145 — the 50% quarterly asset test explained
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Educational summary, not tax advice. Limits and rules change — confirm current law with your tax adviser.