Direct Indexing for Millionaires: Is It Worth It?

Direct indexing adds tax-loss harvesting at the individual-stock level. At $1M–5M in taxable assets, it can generate 0.5–1.5% per year in tax alpha — often worth more than the fee difference alone.

What direct indexing actually is

A regular index fund (like VTSAX or SPY) holds hundreds of stocks inside a single wrapper. You own the fund — not the individual shares — so when individual stocks drop, you can't harvest those losses.

Direct indexing flips this. An advisor or SMA manager holds the underlying stocks directly in your taxable account, typically 100–500 positions that replicate an index. When any of those positions dip (say, a single tech stock drops 20% in a sector rotation), the manager sells it, books the loss, and immediately reinvests in a similar-but-not-identical stock to maintain your exposure. The loss offsets gains elsewhere. Repeat this across hundreds of positions in a volatile year and the tax savings accumulate.

When it makes sense — and when it doesn't

• Good candidate: $500K+ in a taxable brokerage, high ordinary income (37% bracket), no plans to spend the taxable portfolio for 10+ years.
• Better candidate: $1M–5M taxable, concentrated stock position needing diversification, in a volatile sector (tech, biotech) where individual-name swings are frequent.
• Weak candidate: Most assets in 401k/IRA (TLH only helps in taxable), low income, planning to move states for retirement (future lower tax rate reduces the deferral value).
• Not worth it: Under $250K in taxable (most managers won't take you; the math barely pencils), or if you're in a 0% long-term gains bracket.

Direct Indexing Tax-Alpha Estimator

This calculator shows the cumulative compounding impact of capturing extra annual tax alpha in your taxable account, compared to a standard index fund with no harvesting.

Note: This models the compounding effect of additional after-tax return only. It does not model the additional cost of a direct-indexing SMA manager (typically 0.10–0.30% on top of your RIA fee), which you should subtract. In most cases the net is still significantly positive.

The wash-sale wrinkle

When your SMA manager sells a losing position, they must not repurchase a "substantially identical" security within 30 days — or the IRS disallows the loss (IRC § 1091). A well-run direct indexing platform handles this automatically by rotating into a similar-but-distinct ticker (e.g., selling AAPL and buying a basket of tech stocks, or rotating from one S&P 500 ETF to a Russell 1000 ETF temporarily). A poorly run one just parks the money in cash, which kills tracking error and misses the reinvestment.

Ask any advisor: "How do you handle wash sales in the direct indexing account, specifically when I have the same position in my 401k?" Wash sales apply across your entire household — if you sell MSFT in your taxable SMA and your 401k buys MSFT in the same window, the loss is disallowed. Cross-account wash sale management is where generalists fail and specialists earn their fee.

Direct indexing vs ETF tax-loss harvesting

Questions to ask any advisor about their direct indexing approach

1. Which platform do you use (Parametric, Aperio, Canvas, other)? What's their harvesting frequency — daily, weekly, opportunistic?
2. How do you handle cross-account wash sales if my 401k holds the same stocks?
3. What's the additional cost for the direct indexing SMA vs your base fee?
4. Do you actively use the harvested losses against my other income sources (RSUs, business income, rental income), or do they just reduce future capital gains?
5. What's the expected tracking error vs the S&P 500 (or whatever index I'm replicating)?