Trader vs investor in the eyes of the IRS

Education, not tax advice: rules, rates and thresholds change every year, so confirm anything you plan to act on with a qualified tax professional.

You may call yourself a trader. The IRS has its own definition, it is not written down anywhere in the statute, and whether you meet it changes which forms you file, which expenses you can deduct and which elections are available to you. This lesson explains the three categories the IRS recognizes and the frustratingly vague tests that separate them.

Three categories

Investor. The default. Anyone who buys and sells securities for their own account, at any frequency, is an investor unless they qualify as one of the other two. Gains and losses are capital, reported on Schedule D. Expenses are investment expenses, and since 2018 those miscellaneous itemized deductions have been unavailable to individuals (check whether current law has changed this). In practice an investor deducts almost nothing: no data fees, no software, no home office, no education.

Trader (someone with "trader tax status", often abbreviated TTS). A person whose trading rises to the level of a trade or business. Gains and losses are still capital and still go on Schedule D unless a separate election is made (next lesson), but the business expenses go on Schedule C as ordinary deductions: platform and data subscriptions, computers, a home office that meets the usual tests, education once the business is established, margin interest, and so on. Trading gains themselves are not subject to self-employment tax, so a Schedule C for a trader typically shows expenses and no revenue, producing a loss that offsets other income.

Dealer. Someone who buys and sells for customers, holding inventory, like a market maker. Not relevant to retail traders and not covered here.

The distinction between the first two is the whole game.

The tests, such as they are

There is no statutory definition of a trader. The standard comes from court cases, and the courts say a trader's activity must be:

1. Substantial: enough volume and frequency to look like a business.
2. Frequent, regular and continuous: not seasonal, not sporadic, not a few busy months.
3. Aimed at profiting from short-term price swings rather than from dividends, interest or long-term appreciation.

Courts have added factors: the number of trades, the number of days traded, the holding period, the hours spent, whether the taxpayer has other full-time employment, and whether the taxpayer treats the activity as a business (separate accounts, records, a plan).

There are no bright-line numbers in the law. What exists is a set of cases showing where the line fell:

• Cases denying trader status have involved taxpayers with roughly 100 to 300 trades a year, trading on well under half of available days, with average holding periods of weeks or months.
• Cases granting or not contesting trader status have generally involved taxpayers trading on most trading days, with trades numbering in the many hundreds or thousands per year, with average holding periods measured in days, and spending several hours a day on the activity.

Practitioners who specialize in this area often describe a comfort zone along the lines of: roughly 4 trades per day on roughly 4 days per week, around 75% of available trading days, average hold under 31 days, several hours a day of activity, and a serious intention to make a living from it. Those figures are guidance distilled from cases, not a rule. Being below them does not make status impossible; being above them does not make it automatic. A trader who works a full-time job and trades at lunch has a harder argument regardless of trade count.

What status changes, in numbers

An illustrative trader with $40,000 of net short-term gains and $9,000 of expenses (data $2,400, platform $1,800, computer and monitors $2,000, home office $1,600, education $1,200), 24% bracket.

The difference is $2,160, the tax on the expenses. Status does not change the character of the gains, does not remove the wash sale rule and does not lift the $3,000 loss limit. Those require the election in the next lesson, which is only available to someone with trader status.

Part-year and multiple activities

Status is determined for each tax year on the facts of that year. A trader can qualify in a year of full-time activity and fail the next year. Long-term investments held alongside the trading business are supposed to be segregated (separate account, clearly identified) so that their gains stay investor-type and their holding periods are not questioned.

The risk of claiming it

Claiming TTS is done by filing a Schedule C, not by applying for anything. If the IRS examines the return and decides the activity was investing, the Schedule C deductions are disallowed with interest and possibly penalties. The exposure is proportional to the deductions claimed. A trader with $1,500 of expenses has little at stake; a trader with a large home office, a vehicle and a $20,000 education deduction has a great deal.

Key idea: "Trader" to the IRS means trading that is substantial, frequent, continuous and aimed at short-term swings. It unlocks business expense deductions and eligibility for the 475(f) election. There is no bright-line test; the standard comes from cases, and the burden of proof is on you.

Try it: From last year's records, count: total trades, number of days with at least one trade, the percentage of available trading days that represents, average holding period, and hours per week spent. Write the five numbers down next to the case-derived guidance above. That page is the start of the file you would hand a CPA, or an examiner.

Recap

• Investors deduct almost no expenses; traders with TTS deduct business expenses on Schedule C.
• TTS is defined by case law: substantial, frequent, continuous, short-term-focused activity.
• Practitioner guidance (roughly 4 trades/day, 4 days/week, 75% of trading days, short holds, several hours daily) is distilled from cases, not a rule.
• TTS alone does not change gain character, remove wash sales or lift the $3,000 loss cap.
• Status is claimed by filing, tested year by year, and carries audit exposure proportional to deductions.