Mark-to-Market Accounting Election (IRC Section 475f)
The Formal Definition
A specialized US Internal Revenue Code tax election available to qualified active traders holding Trader Tax Status (TTS) that treats all open securities as if they were sold at fair market value on the final business day of the year, completely exempting the trader from the Wash Sale Rule and the $3,000 net capital loss limitation.
Tax Transformation: Capital Gains / Losses (Subject to $3k Loss Cap & Wash Sales) → Ordinary Business Gains / Losses (100% Fully Deductible Against All Income)
Cole Barrett's Reality Check
The Unvarnished Bottom Line"Section 475(f) is an active trader's superpower. Under normal rules, if you lose $100,000 trading, the IRS only lets you deduct $3,000 a year, and wash sale rules can give you a tax bill on money you lost. If you qualify for Trader Tax Status and elect Section 475(f), your capital losses become ordinary business losses. You can write off 100% of your trading losses against your other income, and the wash sale rule is legally erased."
Interactive Simulator: Test the Math
Real-World Example: Scenario Breakdown
Examining the real numbers for: Active day-trading account suffering a -$60,000 net annual trading loss alongside a high-volume wash sale profile
| Execution Metric | Section 475(f) Elected Trader | Standard Retail Investor Classification |
|---|---|---|
| Fee / Rate | $0.00 | $0.00 |
| Spread / Buffer | Timely filed IRS Section 475(f) election with qualified Trader Tax Status | Did not file Section 475(f); traded actively across same symbols continuously |
| Execution / Status | All positions marked to market at year-end; wash sale rules completely eliminated | Deducted statutory maximum of only $3,000 of capital losses on tax return |
| Total Cost / Result | Maximized tax recovery on trading losses | Crippled by statutory capital loss limits and wash sale deferrals |
How Brokers Weaponize This Term
Accountants who don't specialize in trading fail to advise active retail clients to make timely Section 475(f) elections, trapping active day traders under restrictive $3,000 annual capital loss caps.
Broker Evaluation Matrix
Cole Approves
Interactive Brokers / Charles Schwab: Provides downloadable annual Form 1099-B and Mark-to-Market transaction reconciliation reports designed specifically for Section 475(f) tax accounting.
Read Audit →Cole Flags / Avoids
Basic Mobile Apps: Omits mark-to-market tax accounting tools, generating standard 1099-B forms burdened with complex wash sale disallowance lines.
View Trap Details →Frequently Asked Questions
What is the deadline to elect Section 475(f) with the IRS?
For existing taxpayers, the election must be filed by the due date of the prior year's tax return (typically April 15th) for it to take effect in the current tax year.
Does Section 475(f) qualify for long-term capital gains tax rates?
No. Under Section 475(f), all gains are treated as ordinary income, meaning you forfeit preferential 15% to 20% long-term capital gains rates on positions held over a year.