Tax-Efficient Investing

Two investors can own the same funds, earn the same returns before tax, and end up decades later with very different amounts. The difference is not skill. It is where each holding sits and how often it creates a tax bill. This chapter explains how taxes quietly reduce returns in a taxable account, how placing each investment in the right kind of account reduces that cost, how to turn a falling market into a tax deduction without breaking the wash sale rule, and which funds are naturally tax-efficient. It comes first in this volume because every later chapter, from real estate trusts to gold to cryptocurrency, has its own tax treatment, and the ideas here are how you judge them.

Tax drag: the fee you never see on a statement

In a retirement account, interest, dividends and gains grow without yearly tax. In an ordinary brokerage account, they do not. Every year a fund pays interest or dividends, or distributes capital gains from its own trading, you owe tax on that income even if you reinvested every cent. The tax is paid from money that would otherwise have kept compounding.

That yearly loss is called tax drag. It behaves exactly like an annual fee: small in any one year, large over decades. A broad stock index fund that rarely sells its holdings might lose a few tenths of a percent a year to tax. A bond fund or an actively traded fund, whose income is taxed at ordinary rates, can lose a full percentage point or more for a saver in a middle or high bracket.

Here $100,000 grows at 7.0% a year before tax for 30 years. With tax drag of 0.3% a year, typical of a low-turnover stock index fund, it ends near $699,733. With drag of 1.2%, typical of a tax-inefficient holding in a taxable account, it ends near $542,713. The gap, about $157,021, is money lost not to markets but to the timing and type of taxable income. The investment fee calculator runs the same comparison with your own balance and horizon; treat the tax drag as if it were a fee.

Asset location: same portfolio, smaller tax bill

Asset allocation is how you split money between stocks, bonds and other assets. Asset location is a separate decision: which kind of account holds each piece. Most households with savings have up to three kinds of account, and each treats income differently.

• Tax-deferred (a traditional 401(k) or IRA): nothing is taxed while the money stays in, and every withdrawal is taxed as ordinary income, including what would have been a low-taxed capital gain outside.
• Tax-free (a Roth 401(k) or Roth IRA): nothing is taxed while it stays in, and qualified withdrawals are tax-free. The most valuable place for the assets you expect to grow the most.
• Taxable (an ordinary brokerage account): interest and short-term gains are taxed at ordinary rates each year, qualified dividends and long-term gains at lower rates, and you control when gains are realised.

Because the three accounts tax income differently, the same holdings cost less in total tax when each sits where its income is taxed most lightly. A widely used starting rule:

1. Interest-heavy holdings (taxable bond funds, real estate investment trusts, high-yield funds) usually go in tax-deferred accounts, because their income would otherwise be taxed every year at ordinary rates.
2. Holdings with the highest expected growth (stock funds, especially small-company or international stock funds held for decades) often go in Roth accounts, where that growth is never taxed.
3. Broad stock index funds suit the taxable account, because most of their return comes as qualified dividends and unrealised gains, both taxed lightly or not at all until you sell.

This is a starting rule, not a law. If almost all of your savings is in one type of account, there is little to place. If your taxable account is the only place you can reach before 59½, you may want some bonds there for safety even at a tax cost. Academic work on the question, including a widely cited 2004 study by Dammon, Spatt and Zhang, finds the gain from good location is real but smaller than the gain from saving more and keeping costs low. The asset location calculator shows which of your holdings belong where and the yearly tax difference.

Location changes where holdings sit, not the overall mix. When you rebalance, look at the total across all accounts, and make trades inside retirement accounts where possible, since selling there creates no tax.

Long-term gains and the 0% band

In a taxable account, the holding period decides the rate. Gains on assets held one year or less are short-term and taxed as ordinary income. Gains on assets held more than one year, and qualified dividends, are long-term and taxed at 0%, 15% or 20%, depending on taxable income.

For 2026, long-term gains are taxed at 0% as long as total taxable income stays at or below $49,450 for a single filer or $98,900 for a married couple filing jointly. The 15% rate applies above that, up to $545,500 single or $613,700 joint, and 20% above. On top of that, the Net Investment Income Tax adds 3.8% on investment income once modified adjusted gross income passes $200,000 single or $250,000 joint. Those NIIT thresholds are set in the law and do not rise with inflation.

Two practical consequences follow. First, simply holding past the one-year mark can cut the tax on a gain sharply. Second, someone with a low-income year (a sabbatical, early retirement, a year between jobs) can sell appreciated holdings and pay no federal tax on gains that fit in the 0% band, then buy back immediately to reset the cost basis higher. The wash sale rule below applies to losses, not gains, so buying back after a gain is allowed. The capital gains harvesting calculator shows how much gain fits in your band.

Tax-loss harvesting and the wash sale rule

When an investment in a taxable account falls below what you paid, selling it realises a capital loss. Losses first offset gains. If losses exceed gains, up to $3,000 a year of the excess can be deducted against ordinary income such as wages, and anything left carries forward to future years with no expiry. Selling and immediately buying a similar, but not substantially identical, investment keeps your market exposure while banking the loss.

A single filer with $120,000 of income owes about $17,570 in federal income tax in 2026, with a top bracket of 22.0%. Deducting a harvested loss of $3,000 against wages lowers income to $117,000 and the tax to about $16,910. The saving is the deducted loss multiplied by the top bracket, and it repeats every year a carried-forward loss remains.

Two cautions keep the benefit real.

The wash sale rule. If you buy the same or a substantially identical security within 30 days before or after selling it at a loss, the loss is disallowed for now and added to the cost basis of the new shares. The window covers 61 days in total, and it counts purchases in any of your accounts, including an IRA and reinvested dividends. A loss disallowed because of a purchase inside an IRA is lost permanently, since IRA shares have no basis to absorb it. The IRS does not define "substantially identical" precisely; two funds tracking the same index from different providers are a grey area, while funds tracking different indexes are generally treated as different.

Harvesting defers tax; it does not erase it. Buying back at a lower price lowers your cost basis, so the eventual gain is larger. The benefit comes from delaying tax, from converting a deduction at ordinary rates into a later gain at long-term rates, and from never paying it at all if the shares are donated or held until death, when heirs generally receive a basis stepped up to market value.

Choosing funds that stay tax-efficient

Some fund structures produce far less taxable income than others, which matters only in the taxable account.

• Broad index funds and exchange-traded funds trade rarely, so they distribute few capital gains. Exchange-traded funds can often remove low-basis shares without selling them, which reduces distributions further.
• Actively managed funds trade more and often distribute short-term gains taxed at ordinary rates, even in years when the fund lost value.
• Municipal bond funds pay interest that is generally free of federal income tax, which can make them worth holding in a taxable account for someone in a high bracket. Compare the yield after tax, not the headline yield.
• Funds with high ordinary income (taxable bonds, real estate investment trusts, commodity futures funds) are best kept in retirement accounts where you can.

A fund's prospectus and annual report show its turnover and its past distributions. Large capital gain distributions in recent years are a warning for a taxable account.