Ask the internet "what's better than SGOV?" and you'll get forty tickers and zero wisdom. That's because it's the wrong question. The right one isn't what beats SGOV — it's what is this cash actually for?
Money you might need Tuesday and money you won't touch for eighteen months should not sit in the same fund. Every rung you climb up the yield ladder is bought with exactly one thing: more risk — duration, credit, or complexity — or a tax trade-off. There is no free yield. So the game isn't finding the biggest number. It's matching the tool to the job, then collecting the most yield that job can safely carry.
Here's the honest menu, rung by rung, and what each extra half-percent really costs you. (Yields move daily, so current figures should be verified before making any comparison.)
Tier 1 — Bedrock: money you might need this week
SGOV · VBIL · BIL · SHV
These hold nothing but ultra-short U.S. Treasury bills — zero credit risk, effectively zero interest-rate risk, sellable in a single business day. Yields sit around 3.6–3.8%, expense ratios are trivial (SGOV 0.09%, Vanguard's VBIL just 0.06%), and — critically — the income is exempt from state and local tax because it's Treasury interest.
The honest point most yield-chasers miss: for a genuine emergency fund, beating inflation is not the mission — not losing money is. When the S&P 500 plunged ~19% from its February high in the April 2025 tariff shock, this entire tier didn't move a penny. That flat line is the product. For money requiring very high liquidity and minimal price movement, this is the tier designed to prioritize certainty over incremental yield.
Micro-optimization for large balances: USFR and TFLO (floating-rate Treasuries) run marginally more state-tax-exempt than SGOV. On a five-figure reserve the difference is a rounding error. For many five-figure balances, the resulting difference may be relatively small.
Tier 2 — Tax-optimized bedrock: the fund that pays you nothing on purpose
BOXX
Here's the clever one. The Alpha Architect 1-3 Month Box ETF earns a T-bill-like return — but it does it with box spreads (a four-legged options position on the S&P 500 that locks in a fixed payoff no matter where the market goes), and it pays no distributions at all. Your return accrues quietly in the share price. In the April 2025 rout, BOXX sat flat right alongside the T-bill funds — the options structure carries no actual market exposure.
Why would anyone want a fund that pays nothing? Taxes. SGOV drips out monthly interest taxed as ordinary income every single year. BOXX hands you nothing to tax until you sell — and because it uses Section 1256 index options, the gains are pitched as the blended 60/40 long-term rate. For a large reserve in a taxable account, that's a real, underappreciated edge.
The catch — and it's a live one. The IRS has never blessed this treatment in writing, and as of 2026 it's under active scrutiny (with the fund now around $13 billion, the stakes are real). If the box-spread gains get recharacterized as ordinary income, the whole tax advantage evaporates. So: a potentially useful structure for certain taxable cash allocations, although its tax treatment remains unsettled. And it does nothing for you inside an IRA or Roth, where there's no tax to defer in the first place.
Tier 3 — Enhanced cash: 6–24 month money you can let wobble a little
ICSH · MINT · PULS (plus the brand-new LQID)
