Income and Assets · Property, real and personal

Investor versus trader

Verification 2026 Verified
tax year · reviewed 2026-08-19 · Draft for I. Ohu review

There is no statutory test. Neither IRC § 162 nor § 212 says what a trader is, and the distinction between an investor and a trader in securities is entirely a question of fact, developed through cases. What has changed is the size of the stakes. Since 2018 an investor’s expenses have not been deductible at all, and Pub. L. 119-21 removed the sunset that would have restored them — so a classification that once altered the placement of a deduction now decides whether there is one.

The rule

Two provisions, and only one of them survives. A trader carries on a trade or business, so expenses are deductible under § 162(a) and reduce adjusted gross income. An investor’s expenses fall under § 212 — ordinary and necessary expenses for the production or collection of income, or for the management, conservation or maintenance of property held for the production of income — which are miscellaneous itemized deductions.

And miscellaneous itemized deductions are gone, permanently. Notwithstanding § 67(a), no miscellaneous itemized deduction is allowed for any taxable year beginning after 31 December 2017 (IRC § 67(h)). The provision no longer carries an end date: Pub. L. 119-21 § 70110 struck the sunset and redesignated the subsection. An investor’s advisory fees, subscriptions, software and home office are therefore deductible nowhere.

Investment interest is a different provision and still works. For a taxpayer other than a corporation, investment interest is deductible up to net investment income for the year, with any excess treated as investment interest paid in the succeeding year (IRC § 163(d)(1), (2)). It is not a miscellaneous itemized deduction and § 67(h) does not touch it.

A trader may elect mark to market. A person engaged in a trade or business as a trader in securities who elects may recognise gain or loss on any security held in connection with that business as if it were sold at fair market value on the last business day of the taxable year, with the gain or loss taken into account for that year (IRC § 475(f)(1)(A)). A trader in commodities may elect the same treatment (§ 475(f)(2)).

The character becomes ordinary. Gain or loss on a security subject to the regime is ordinary income or loss (IRC § 475(d)(3)(A)(i), applied by § 475(f)(1)(D)). Two consequences follow immediately: the capital loss limitation does not apply, so a bad year is fully deductible against other income; and the wash sale rule has nothing to operate on, because there is no capital loss to disallow.

But the election does not create self-employment income. Section 475(f)(1)(D) provides that § 475(d)(3) does not apply for purposes of §§ 1402 and 7704 — so the ordinary characterisation does not carry through to self-employment tax.

Investment positions must be quarantined the same day. A security is outside the election only if it is established to have no connection to the person’s activities as a trader and is clearly identified as such in the records before the close of the day on which it was acquired (IRC § 475(f)(1)(B)(i), (ii)). If it later ceases to qualify, the mark to market rule applies to changes in value after the cessation.

Election mechanics. The elections may be made separately for each trade or business and without the consent of the Secretary; once made, an election applies to the year for which it is made and every subsequent year unless revoked with consent (IRC § 475(f)(3)). It is easy to get into and hard to get out of.

Dealers are a third category. A dealer’s gain is not capital unless the security was clearly identified in the dealer’s records as held for investment before the close of the day it was acquired, and was not thereafter held primarily for sale to customers in the ordinary course (IRC § 1236(a)); and a dealer’s loss is never ordinary if the security was ever so identified (§ 1236(b)).

Current figures

Item	2026
Statutory definition of a trader	none — neither IRC § 162 nor § 212 defines a trader, so whether an activity is a trade or business is decided on the facts, and the outcome controls almost everything else on this topic^TY2026
An investor’s expenses	not deductible — IRC § 67(h) allows no miscellaneous itemized deduction for any taxable year beginning after 31 December 2017, and Pub. L. 119-21 § 70110 removed the sunset, so an investor's IRC § 212 expenses are permanently disallowed^TY2026
Investment interest	still allowed, but limited to net investment income for the year, with the disallowed amount treated as investment interest paid in the succeeding year^TY2026
The mark to market election	a trader in securities or commodities may elect to recognise gain or loss on securities held in that business as if sold at fair market value on the last business day of the year, with the gain or loss taken into account for that year^TY2026
Character under the election	ordinary income or loss — so a marked position escapes the capital loss limitation entirely, and the wash sale rule has nothing to bite on^TY2026
Self-employment tax	the ordinary-character rule is switched off for IRC §§ 1402 and 7704 purposes, so electing does not convert trading gains into self-employment income^TY2026
Quarantining investments	a security is outside the election only if it is established to have no connection to the trader's activities and is clearly identified as such in the records before the close of the day it was acquired^TY2026
Making and revoking the election	made separately for each trade or business and without the Secretary's consent, applying to the year for which made and every subsequent year unless revoked with consent^TY2026
Dealers	a dealer's gain is not capital unless the security was clearly identified in the records as held for investment before the close of the day of acquisition and was not thereafter held primarily for sale to customers^TY2026
Wash sales	no deduction where substantially identical stock or securities are acquired within 30 days before or after the sale, and the disallowed loss is added to the basis of the replacement — the section reaches stock or securities, and contracts or options to acquire or sell them^TY2026
Annual capital loss allowance	capital losses are allowed against capital gains in full, plus the lower of $3,000 — $1,500 for a married individual filing a separate return — or the excess of losses over gains; unindexed since 1986 and not doubled on a joint return^TY2026

How it works in practice

Treat trader status as a factual conclusion that has to be supported, not a box to tick. The activity has to look like a business carried on for a livelihood: substantial and continuous trading, short holding periods, and an intention to profit from daily market movements rather than from dividends and long-term appreciation. A taxpayer with a full-time job and a hundred trades a year is an investor whatever they call themselves.

Understand that trader status and the mark to market election are separate decisions. Trader status alone gives § 162 deductions and leaves gains capital, with the wash sale rule and the capital loss limitation both applying. The § 475(f) election converts everything to ordinary, which removes both — and removes long-term capital gain rates with them. For a trader who holds nothing overnight the rate loss is theoretical; for one who does, it is real.

Note the two traps in the mechanics. Any position intended as an investment must be identified in the records the day it is acquired, not later, or it is swept into the regime. And the election is effectively permanent: revocation needs consent, which is a very different proposition from the annual choice it is often assumed to be.

Scenario 1 — the same expenses, two answers

Priya pays 14,000 dollars in the year for market data, trading software and a portion of her home office.

If she is an investor, those are IRC § 212 expenses, they are miscellaneous itemized deductions, and § 67(h) allows none of them for any taxable year beginning after 2017 — a disallowance Pub. L. 119-21 § 70110 made permanent. If she is a trader carrying on a trade or business, the same 14,000 dollars is deductible under § 162(a) and reduces adjusted gross income. Nothing about the expenses changes; only the characterisation of the activity does.

Scenario 2 — the loss that was fully deductible

Rohan is a trader who made the § 475(f) election. In 2026 he ends the year down 180,000 dollars, and has 110,000 dollars of other income.

Because § 475(d)(3)(A)(i) makes the loss ordinary, the capital loss limitation does not apply: the whole 180,000 dollars is an ordinary loss, wiping out his other income with the remainder available as a net operating loss. Without the election, the same 180,000 dollars would have been a capital loss, deductible against capital gains and then only the annual allowance against ordinary income, with the rest carried forward for many years. The election is worth most in exactly the year the trader least wants to think about it.

Scenario 3 — the retirement account that was not quarantined

Sofia is an electing trader. In March she buys shares in a utility company intending to hold them for years in her taxable brokerage account, alongside her trading positions. She notes the intention in an email to her adviser in June.

Too late. IRC § 475(f)(1)(B)(ii) requires the security to be clearly identified in her records as having no connection to her trading activities before the close of the day on which it was acquired. The March position is therefore inside the mark to market regime: it is marked at year end, and any gain is ordinary income rather than long-term capital gain. A contemporaneous same-day record, in a separately designated account, is the only reliable way to keep an investment out.

No statute defines a trader. The distinction is factual, and the taxpayer bears the burden of establishing it.

The § 67 suspension is now permanent. Pub. L. 119-21 § 70110 removed the end date, so waiting for it to lapse is no longer a strategy.

Investment interest is not a miscellaneous itemized deduction. Section 163(d) survives § 67(h) untouched, subject to its own net investment income limit.

Electing gives up capital gain rates. Section 475(d)(3)(A)(i) makes everything ordinary, in both directions.

How this has changed

The suspension became permanent in 2025 and that is the headline change. Section 67(g) as enacted by Pub. L. 115-97 § 11045(a) disallowed miscellaneous itemized deductions for taxable years beginning after 2017 and before 1 January 2026. Pub. L. 119-21 § 70110 struck the end date and redesignated the subsection as § 67(h), with a new § 67(g) on a different subject. Two things follow for practitioners: material written between 2018 and mid-2025 describes a temporary rule that has become permanent, and any citation to ”§ 67(g)” for the suspension now points at the wrong subsection.

The stakes of the investor–trader line rose sharply as a result. Before 2018 an investor’s expenses were deductible subject to a 2 percent floor; the classification changed how much was allowed and where. Now it changes whether anything is allowed. The same case law does far more work than it was written to do.

Section 475(f) itself has been stable since 1997 and its structure repays attention: the election is free to make, applies indefinitely, and requires consent to revoke (§ 475(f)(3)). The asymmetry is deliberate and it is the reason the election should be treated as a long-term commitment rather than an annual optimisation.

The § 475(f)(1)(D) carve-out for §§ 1402 and 7704 has not changed and continues to answer the question practitioners most often ask about the election — no, it does not make trading gains self-employment income.

Exam focus

Expect the expense question, testing whether you know an investor now gets nothing. The answer turns on § 67(h), not on a floor.

Expect the two decisions to be conflated. Trader status is factual; the mark to market election is separate and elective, and one does not imply the other.

Expect the ordinary character consequence, in both directions: no capital loss limitation, no wash sale disallowance, and no long-term capital gain rates.

Expect the same-day identification requirement for a position the trader wants to keep out.

Check yourself

1. An investor pays 6,000 dollars in advisory fees in 2026. How much is deductible?

Answer: None. The fees are IRC § 212 expenses and therefore miscellaneous itemized deductions, and § 67(h) allows no miscellaneous itemized deduction for any taxable year beginning after 31 December 2017 — a disallowance made permanent by Pub. L. 119-21 § 70110.

2. Does trader status by itself change the character of trading gains?

Answer: No. Trader status makes expenses deductible under IRC § 162, but gains remain capital unless the taxpayer separately elects mark to market under § 475(f), which makes them ordinary.

3. An electing trader has a 200,000-dollar net loss for the year. Is it subject to the capital loss limitation?

Answer: No. IRC § 475(d)(3)(A)(i), applied by § 475(f)(1)(D), makes the loss ordinary, so § 1211(b) does not apply to it.

4. An electing trader buys shares intending to hold them long term. What must be done, and when?

Answer: The security must be established as having no connection to the trading activities and clearly identified as such in the records before the close of the day it was acquired, under IRC § 475(f)(1)(B)(i), (ii). A later identification does not work.

5. May a § 475(f) election be revoked for the following year?

Answer: Only with the Secretary’s consent. IRC § 475(f)(3) allows the election to be made without consent, but once made it applies to that year and all subsequent years unless revoked with consent.

Change log

2026-08-19Initial draft. Sets out the absence of any statutory definition of a trader, the IRC § 67(h) permanent disallowance of miscellaneous itemized deductions as amended by Pub. L. 119-21 § 70110, the § 163(d) investment interest limitation that survives it, the § 475(f) mark to market election with its ordinary character, its § 475(f)(1)(B) same-day identification requirement and its § 475(f)(3) mechanics, and the § 1236 dealer rules.