Tax efficiency measures how much of an investment’s return survives taxation. It depends on when gains are realized, how much income the asset distributes, the applicable tax rates, and the asset’s expected return. section 8.2 section 8.5
An ETF avoids a realized gain
Suppose an ETF must replace $500,000 of Stock A, whose cost basis is $300,000, while adding Stocks B through E. Selling A would realize a $200,000 gain. Through a create/redeem “heartbeat” trade, an authorized participant supplies $500,000 for the new holdings, then withdraws Stock A in kind. The ETF realigns its portfolio without selling securities or creating that taxable event. section 4.2.3
Assess an asset’s tax efficiency using these interacting inputs:
- Turnover reduces efficiency because earlier gain realization ends tax deferral. section 8.2
- Dividends and interest reduce efficiency because they create taxable income before final sale. section 8.2
- Qualified dividends may receive capital-gains treatment, while REIT and MLP distributions often carry higher ordinary-income taxation. section 8.2
- Higher expected returns magnify the benefit of placing an asset in a tax-preferred account; low-return money-market investments may show little benefit. section 8.2
