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| # | Account | Yield | After-tax |
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Method: after-tax = yield × (1 − federal) × (1 − state) for bank interest; Treasuries (T-bills, SGOV/BIL, Treasury MMFs like VUSXX) are treated as state-tax exempt: yield × (1 − federal). Simplified: uses the state's top marginal rate (Tax Foundation, State Individual Income Tax Rates and Brackets, 2026, rates as of Jan 1, 2026; SC uses 6.2% after its scheduled July 1, 2026 reversion), ignores local tax, state deduction of federal tax, and partial-exemption rules for government MMFs. ETF yields are 30-day SEC yields; bank APYs are auto-read from each bank's public page. Not financial advice. Some links may be affiliate links (see disclosure above). CD rates are 1-year (or 12-month) terms read from each bank's page. "Δ 1 wk" compares with the stored snapshot (site/history/) closest to 7 days earlier.