RSU Stock and Investment Positions: Avoid Costly Section 475 Tax Traps for Traders

Last Updated on October 15, 2025 by Robert Green

Traders who receive RSU stock or hold investment positions in the same account as their trading activity can face hidden tax traps under Section 475(f). Learn how to avoid IRS reclassification, excess-business-loss deferrals, and mismatched tax treatment—while still benefiting from Trader Tax Status and Section 475’s powerful advantages.

A Common Issue for Active Traders

Many active traders who qualify for Trader Tax Status (TTS) and elect Section 475(f) mark-to-market (MTM) treatment also receive restricted stock units (RSUs) from their employers, especially in the technology, finance, and biotech sectors.

When RSUs vest, their fair market value (FMV) is taxed as ordinary income, subject to W-2 withholding. Some traders then transfer those vested shares into their Section 475 trading accounts, assuming the shares automatically qualify as part of the trading business.

Unfortunately, the IRS disagrees. Avoid this problem by selling the RSU-acquired public-company stock and repurchasing it in your TTS trader account. The trader below did not—and ended up with significant phantom income and NOL carryforwards.

(For a basic overview of Trader Tax Status, see IRS Topic No. 429: Traders in Securities.)

IRS Position: RSU Stock Is Not Section 475 Property

RSUs are deferred-compensation property governed by Section 83. No stock is owned until the vesting date, when the employee gains unrestricted rights to the shares. At that time, the FMV becomes ordinary wage income, reported on Form W-2, and it becomes the tax basis.

Acquisition Timing:
The RSU shares are considered acquired on the vesting date, not when deposited into a brokerage or trading account. The subsequent deposit of shares is an administrative action only—it does not change the character of the stock from compensation property to trading property. Even if the shares are immediately transferred into a trader’s Section 475 account, they remain compensation assets governed by Section 83, not trading assets under Section 475(f).

Public vs. Private RSUs:
This rule applies to both public and private company RSUs. Private-company RSUs often include “double-trigger” vesting (time + liquidity). Even after a liquidity event, the shares remain compensation property under Section 83, not trading property under Section 475(f).

Even if the shares are deposited directly into a trader’s MTM account, they were acquired through employment, not through the trading business. Therefore, they fall outside Section 475(f). Section 475 applies only to securities acquired and held in connection with a trading activity, not to compensation or investment assets merely moved into the account.

IRS Chief Counsel Advice 201432016 (Aug. 8, 2014) supports this conclusion (while a CCA is not precedential, it reflects the IRS’s administrative interpretation and is generally followed in practice):

“Section 475(f) applies only to securities held for trading in the ordinary course of a trade or business. Merely transferring such securities into a trading account does not convert them into property held in connection with the trading business.”

Under Proposed Reg. § 1.475(f)-2(a)(2)–(4), RSU-acquired shares are compensation assets, not trading property, and therefore excluded from Section 475(f) mark-to-market accounting—even if later transferred. Although still proposed, these regulations have guided IRS practice since 1998 and remain the accepted authority.

Although the proposed regulation does not explicitly mention employment-related compensation property, its framework distinguishes between trading and non-trading assets. RSU shares fall outside Section 475 because they are governed by Section 83 as compensation property—not acquired in the ordinary course of a trading business. This interpretation is supported by IRS Chief Counsel Advice 201432016 and has been consistently applied by the IRS in its administrative practice.

Once vested, RSU shares have a basis equal to the amount already included in W-2 income, and any subsequent gain or loss is capital, not ordinary. Since the shares were not acquired for trading purposes, Section 475 cannot be applied retroactively.

Brokerage Note: The RSU cost basis is often omitted on Form 1099-B, resulting in an overstated gain. To avoid double taxation, adjust the basis on Form 8949 to include amounts already taxed through W-2 income.

Example: How Mismatched Character and the EBL Limit Create a Tax Trap

A trader receives $1 million of employer stock at RSU vesting (already taxed through payroll) and moves it into the trading account. Later, they trade the position and realize a $750,000 gain, while incurring $900,000 of ordinary trading losses under Section 475(f).

If the RSU stock were ordinary under Section 475, the $750,000 gain would offset most of the $900,000 loss, leaving a net business loss of $150,000 within the Excess Business Loss (EBL) limitation.

However, the IRS treats the RSU shares as capital assets. Even though the trader has an economic loss of $150,000, they owe tax on phantom income of $124,000 because the EBL limit for 2025 is $626,000 (MFJ) / $313,000 (single). The remaining $274,000 EBL becomes an NOL carryforward, usable later but offering no immediate relief.

An NOL carryforward is generally superior to a capital loss carryover, because the NOL can offset income of any kind in future years. In contrast, capital losses may only offset capital gains (plus $3,000 per year against ordinary income). The EBL limitation is indexed annually for inflation, so it primarily affects traders with substantial losses.

The trader could have avoided this problem by selling the RSU-acquired stock when vested and repurchasing it inside their TTS trading account.

A Similar Trap for Traders with Investment Positions

Before discussing portfolio margining and holding period issues, let’s first address the process of transferring assets from a non-MTM investment account into a Section 475(f) trading account.

Moving a security from an investment account into a trading account does not convert it into Section 475 property. To qualify for mark-to-market treatment, a position must be acquired and held in connection with the trading business—not merely transferred after acquisition.

When a trader first elects Section 475(f), a Section 481(a) adjustment converts opening-year TTS trading positions (previously reported under the realization method) into mark-to-market assets by revaluing those securities to fair market value on the first day of the election year. The difference between the prior-year basis and the MTM value becomes the Section 481(a) adjustment, ensuring a clean transition into the new accounting method.

Under Prop. Reg. § 1.475(f)-2(a)(2)–(4) and Section 475(f)(1)(B)(ii), traders must make timely same-day identifications of any investment-held securities to preserve segregation. Once identified, those positions remain permanently outside Section 475 treatment.

Suppose a trader later trades options around those investment positions (for example, selling covered calls). In that case, the stock remains a capital asset, while the option trades can qualify for Section 475 ordinary treatment.

To avoid potential IRS reclassification or mixed-character outcomes, traders should ring-fence their long-term investments in separate individual or joint accounts and/or conduct their TTS/Section 475 activity in an entity account with its own Employer Identification Number (EIN).

Court Cases Reinforce the IRS Position

In Endicott v. Commissioner (T.C. Memo 2013-199), the Tax Court held that holding significant equity positions while trading options around them resembled investment management, rather than an active trading business. The average holding period exceeded 31 days, which the IRS still uses as a bright-line benchmark for TTS analysis.

Similarly, in Holsinger v. Commissioner (T.C. Memo 2008-191), monthly option trading failed the frequency and continuity tests for TTS. Both cases involved portfolio margining that blurred the line between investing and trading, thereby undermining TTS eligibility.

Takeaway: Mixing long-term investments and trading in one account can jeopardize both TTS and Section 475 benefits. Use separate accounts or entities to clearly ring-fence your trading business.

Broader Section 475 Mismatch Risks

While Section 475(f) is typically the most tax-efficient method for active traders, mismatches can occur when some income is classified as capital gain and some as ordinary income. The EBL limits ($313,000 single / $626,000 MFJ for 2025) are relatively high, and most traders don’t lose enough to be affected. Conversely, a trader might have Section 475 income and capital losses, creating the reverse problem.

Example: The Reverse Mismatch

A trader has an $800,000 Section 475(f) MTM gain and sells long-term investment stocks at a $300,000 capital loss. Because the loss is capital, it cannot offset the ordinary 475 income. The trader pays tax on the full $800,000 of ordinary income while carrying forward the $300,000 capital loss, which is usable only against future capital gains ($3,000 per year against ordinary income).

A similar trap arises if RSU stock drops in value after vesting—the subsequent sale produces a capital loss that cannot offset Section 475 ordinary trading income, leaving the trader with higher taxable income despite an overall economic loss.

These mismatches underscore the importance of meticulous planning, account segregation, and accurate year-end tax projections.

Why Section 475(f) Still Matters

Despite these pitfalls, Section 475 remains the best framework for most active traders. Its benefits are substantial:

Converts trading results to ordinary income or loss
Eliminates wash-sale rules
Bypasses the $3,000 capital-loss limit
Enables the 20% Qualified Business Income (QBI) deduction for profitable TTS traders operating as pass-through entities or Schedule C sole proprietors

(SSTB phase-out range for 2025: $394,600–$494,600 MFJ / $197,300–$247,300 single)

Even traders below these thresholds can enjoy the full 20% QBI deduction—another reason Section 475 remains powerful.

California Makes It Even Tougher

California conforms to the federal EBL limit and has suspended NOL deductions for 2024–2026 if AGI exceeds $1 million. This suspension applies even to business losses under Section 475(f).

Any disallowed EBL becomes part of a California NOL carryforward but cannot be used until the suspension lifts. Budget bills SB 167 and SB 175 could be reinstated earlier if state revenues recover.

Audit Checklist: Section 475(f) and TTS Compliance Essentials

Adjust the RSU basis on Form 8949 to reflect W-2 income already reported
Make timely written identifications of investment positions per Prop. Reg. § 1.475(f)-2(a)(2)–(4)
Consider separate entities (with distinct EINs) to ring-fence trading vs. investing
Document Section 475 elections and revocations with timely-filed notification statements to the IRS and Form 3115 per Rev. Proc. 2025-23 — see GreenTraderTax: New IRS Rules — Section 475 MTM Revocation Now Locked for Five Years
Segregate trading and investment accounts at the broker level
Track average holding periods (≤ 31 days) to support TTS qualification

Need Professional Guidance?

Each trader’s facts are unique—especially when RSU stock, segregated investments, and Section 475 intersect.

CPAs at Green, Neuschwander & Manning, LLC (GNM) can help you analyze your facts, minimize mismatches, and plan for 2025 and beyond.

👉 Schedule a consultation at GreenTraderTax.com

Sources & Further Reading

IRS Chief Counsel Advice 201432016 (Aug. 8, 2014)
Proposed Reg. § 1.475(f)-2(a)(2)–(4)
Section 475(f)(1)(B)(ii) identification requirement
Endicott v. Commissioner, T.C. Memo 2013-199
Holsinger v. Commissioner, T.C. Memo 2008-191
Rev. Proc. 2025-23 — Section 475 Revocation Lock-In Rule
IRS Topic No. 429 — Traders in Securities
California FTB NOL Suspension 2024–2026
Articles on Section 475 and TTS at GreenTraderTax.com