The new cost basis reporting rules won’t affect this year’s returns, but they are already in effect.

Beginning on Jan. 1, 2011, it became mandatory for brokers and other financial intermediaries to report cost basis information on Form 1099-B to investors and to the Internal Revenue Service for equities acquired on or after that date. The new requirements, spelled out in the Emergency Economic Stabilization Act of 2008, also will cover mutual funds acquired on or after Jan. 1, 2012, and debt securities, options and private placements acquired after Jan. 1, 2013.

The rules take aim at the practice of deciding after the fact what stock was sold where an investor holds different lots of the same stock, each with a different cost basis. For example, an investor holds three lots, with a cost basis of $40 for the first lot, $60 for the second lot, and $100 for the third lot. If shares are sold for $90, the investor might decide at a later date which ones were sold—those with a high cost basis, creating a loss, those with a medium cost basis, creating a small gain, or those with a low cost basis, creating a larger gain.

“Starting this year investors have to decide what they’re selling, and communicate this to the broker immediately,” said Stevie Conlon, CPA, Esq., senior director and tax counsel at Wolters Kluwer Financial Services. “You can’t do it later. You have to identify lots that were sold no later than the settlement date of sale. Before this, people would look at the stock they had sold at the end of the year or at the end of every month and determine which were the best lots to have sold.”

“The final regulations are clear that the taxpayer must select the lot that was sold no later than the settlement date, which would be the date of the trade plus three days,” she said. “This is probably what the law was before, but the law and the new regulations make it specific. In the old days it wouldn’t be obvious to the IRS that you changed something later. Now, the broker must issue a Form 1099-B for the stock sold this year that was bought after January 1 of this year.”

“Next February investors will receive a Form 1099-B showing the cost basis under that rule,” she said. “It will show the cost basis that was communicated to the broker by the settlement date, or the broker will be required to use FIFO. If what you put on your tax return doesn’t match, it will be obvious that you picked a different method after the fact. There will be taxpayers that are unsatisfied with both their broker and their tax adviser.”

This is a momentous issue due to the way that taxpayers normally interact with their advisers, Conlon indicated. “It requires getting tax advice on a recurring basis, almost in real time. That’s very different from an adviser’s normal involvement with a client at year-end planning sessions and tax return time,” she said. “Under the new rules, you’re locked in by whatever you select. It forces you to make an analysis about what’s the right lot to sell on an ongoing basis. The adviser has to be involved at the time of the trade, and that’s significant.”

Conlon advised tax preparers to explain the new rules to their clients during tax season, if they haven’t already. “The sooner you can educate your clients about the new rules, the better it will be at the end of the year,” she said.

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