Investment Overview

Two people can earn the same return, and one can keep a lot more of it. This section is about the moves that reduce the tax drag on investing, so more of your gains stay yours.

Key numbers

The Earnings section was about the taxes that hit your income when you earn it. This section is about what happens to your money after that.

Once you've optimized your business structure and maxed your tax-advantaged accounts, you're left with dollars flowing into taxable investment accounts. The question is how to grow that money without a tax bill that eats most of the returns.

The good news is that investment income is taxed differently from earned income — and the difference is significant. A business owner earning $750,000 faces a combined federal and California rate of roughly 54% on the last dollar of ordinary income. But a dollar of long-term capital gain faces a combined rate of roughly 37%. Hold an investment for one year and one day instead of eleven months, and your tax rate drops by 17 percentage points.

That spread — between what the IRS charges on earned income versus investment income — is the entire basis of the Investments section. Every strategy here either reduces the rate you pay, defers when you pay it, or eliminates it entirely.

Three levers

1. Account selection. If you haven't maxed your 401(k), HSA, and Roth contributions, start there — those are the highest-value moves. Beyond that, what you put in tax-advantaged accounts versus a taxable brokerage affects your total tax bill significantly.
2. Tax-efficient investing. Not all investments generate the same tax drag. Holding period, turnover, dividend treatment, and asset type all affect how much of your return you actually keep. A few simple choices here can make a material difference over decades.
3. Advanced strategies. Direct indexing, exchange funds, opportunity zones, and similar tools are available at higher wealth levels. Some are worth it. Many are oversold. The strategies in this section are worth understanding so you know when to use them and when to pass.

The running principle from Rule #1 applies here as much as anywhere: don't add complexity unless it clearly pays for itself. The basics of tax-efficient investing — holding period, low-turnover index funds, tax-loss harvesting — capture most of the available benefit with almost none of the complexity.