The clean answer
A CPA cannot make ordinary investment activity into trader tax status by labeling it differently. The position should be built from trading records, time spent, strategy, frequency, regularity, and how the activity was conducted during the year.
The review should happen before filing because the return position affects expense treatment, Schedule C reporting, estimated payments, and whether a Section 475 election or Form 3115 analysis is needed.
What the CPA should review
- Trade count, trading days, holding periods, and year-round regularity.
- Broker 1099s, realized gain/loss reports, futures or Section 1256 reports, and account statements.
- Documentation of trading routine, research, tools, subscriptions, margin interest, and time spent.
- Whether investment positions are separated from trading positions.
Common mistakes
- Assuming high dollar volume alone creates trader tax status.
- Waiting until after the Section 475 election deadline to evaluate the strategy.
- Mixing long-term investment holdings with the trading activity without documentation.
- Relying only on broker summaries when wash sales or multi-account activity need reconciliation.