Trading Business Expenses

TTS traders can deduct many trading business expenses that investors cannot.

Traders who qualify for Trader Tax Status (TTS) may deduct ordinary and necessary expenses incurred in carrying on a trading business. These deductions are not available to investors under current law — OBBBA made this suspension of miscellaneous itemized deductions permanent starting in 2026 — making business expense treatment one of the primary economic benefits of qualifying as a trading business.

Expense deductibility depends on facts and circumstances, proper classification, and substantiation. Merely incurring an expense does not make it deductible.

Common Trading Business Expense Categories

Traders with TTS may be eligible to deduct expenses such as:

• Market data and quote services

• Trading platforms and software subscriptions

• Charting tools, analytics, and research services

• Stock borrowing fees

• Computers, monitors, peripherals, and office equipment

• Internet service used for trading activity

• Home office expenses (when qualification requirements are met — see note below)

• Education directly related to trading skills and strategies

• Professional fees (tax preparation, accounting, legal, consulting)

• Books, publications, and financial news services

• Office supplies and general administrative costs

• Travel expenses directly connected to trading business activities

• Business insurance (where applicable)

Some expenses may require allocation between personal, investment, and business use.

A note on the home office deduction: the deduction is limited to the trading income for the year. The unused amount carries over to the subsequent year.

What This Does Not Mean

• Expenses are not deductible simply because you trade actively

• Investor expenses remain permanently limited or suspended under current law

• Personal expenses do not become deductible by labeling them “trading-related”

• Substantiation and business purpose are required for IRS compliance

Why Expense Classification Matters

Proper expense treatment can materially reduce taxable income for qualified traders, but improper deductions are a frequent trigger for IRS scrutiny. Expense deductions must align with Trader Tax Status, consistent activity, and adequate records. Traders who also elect Section 475 mark-to-market accounting get ordinary loss treatment on top of these expense deductions.

Learn More

Detailed rules, examples, allocation guidance, and planning considerations are covered in Chapter 5 of Green’s 2026 Trader Tax Guide.