The following is for after-tax accounts. If everything is §401K or IRA, move along, nothing to see.
Some readers may know that I am not a fan of index funds. Here's where holding index funds can give you an unwelcomed tax surprise this year. This applies to more than index funds, and to any fund with a low turn-over rate. For this example I will use the S&P 500 funds.
American Express was added to the S&P 500 in 1976. I don't have data that far back, but in 1983 it was trading at $6. Today it trades at $146. But it was at at $195 in February. The market had a "correction" and the S&P 500 is down 20% year to date. You are a buy and hold investor, you didn't get scared and sell. But plenty others did. And, it turns out, you sort of did sell. How's that?
Each stock in the S&P 500 has a weight and a ranking. When hordes of scared investors sold, the fund managers had to sell stocks to cash out the selling fund holders. And with that weighting, they can't just sell the losers, but they sell a bit of everything to maintain the weight and ranking. Someone you don't know sold his S&P 500 holdings, the fund manager sold stocks to meet that cash-out transaction, and American Express got sold at a huge capital gain. Even though it dropped from its February high of $195 to $146, the cost basis to the fund was $6, and what looks like a loss to us is a gain in the fund. These funds maintain their tax exempt status by distributing the capital gains and dividends to the fund holders each year. So we can expect a huge capital gain distribution in the year when we are down 20%! A taxable gain without the gain. This is a feature of the inside basis of the stocks in the fund, vs the outside basis to us—the cost we paid for the funds. If we held stocks instead of funds, other people selling would not generate capital gains to us. We can still decide when to get income.
The surprise taxable gain can cause big headaches, as it can throw your income over limits you may have been planning to stay under:
- NJ retirement exclusion
- Medicare IRMAA levels
- Tax bracket planning
- FAFSA reporting
- Social Security taxation
- likely more that I can't think of right now
There are two techniques to avoid the tax surprise. One is to sell in December. Selling at a loss causes no additional tax, and you avoid the capital gain distribution. (Poor fellow who buys in December.) The other is to reach out to the fund. Most estimate the capital gain distributions in the last week of December. Then sell at a loss anything anywhere in your taxable portfolio at a loss to neutralize the surprise phantom gain.