What to Write in a Trading Journal: 17 Fields That Actually Matter

One of the first questions new traders ask is what to write in a trading journal. Too few fields and you miss data; too many and you quit. This guide lists 17 fields that actually matter when you decide what to write in a trading journal: the ones that give you usable stats and clear lessons without turning logging into a chore. Use them as a checklist so your journal stays consistent and useful.

Why the Right Fields Matter When You Write in a Trading Journal

If you don't know what to write in a trading journal, you either log randomly or overload. Random fields mean you can't filter or compare later. Too many fields mean logging takes too long and you skip days. The 17 fields below are the ones that show up again and again for serious traders: they support win rate, risk-to-reward, performance by session and pair, and the "why" behind each trade. When you know what to write in a trading journal and stick to the same set, your data becomes analysable and your journal actually helps you improve.

Fields 1–4: When and What You Traded

1. Date. The day of the trade. Essential for filtering by week, month, or season and for seeing patterns over time. 2. Time (or datetime). When you entered (and optionally when you exited). Critical for session analysis—London, New York, Asian—so you know what to write in a trading journal to see which times work. 3. Symbol or pair. The instrument: e.g. EUR/USD, AAPL. Use one format so you can filter and group. 4. Direction. Long or short. Simple but needed for stats and for checking bias. These four are the backbone of what to write in a trading journal for every trade.

Fields 5–8: Price, Size, and Plan

5. Entry price. The price at which you entered. Needed for later analysis and for calculating risk. 6. Exit price. The price at which you closed. Together with entry and size, this gives you P&L. 7. Position size. Lots, shares, or units. Non-negotiable when deciding what to write in a trading journal—without size you can't assess risk or true P&L. 8. Stop loss (planned). Where you planned to exit if wrong. Log it even if you moved it; that way you can later see how often you break the plan. These four turn your journal into a real risk and outcome record.

Fields 9–12: Outcome and Reason

9. Take profit (planned). Your target when you entered. Helps you see how often you hit targets vs. exit early or late. 10. Risk-to-reward (or R:R). The planned or actual ratio for that trade. One of the most useful fields when you decide what to write in a trading journal—it ties plan to outcome. 11. Result. Win or loss, and P&L in account currency. The raw outcome. 12. Reason for entry. One line: which setup or rule triggered the trade (e.g. "Break of structure", "Support bounce"). This is what turns a log into a journal: without it you can't see which ideas actually work. Many traders say reason for entry is the single most important thing to write in a trading journal.

Fields 13–15: Context

13. Session. London, New York, Asian, or overlap. Lets you filter and see which session is profitable for you. 14. Timeframe. The chart you used for entry (e.g. H1, M15). Useful when you review what to write in a trading journal and find that certain timeframes work better. 15. Notes. Free-form: what went wrong, what you'd do differently, or a tag like "moved SL" or "revenge." Keeps context that strict fields can't capture. Session, timeframe, and notes complete the picture so your journal supports real decisions.

Fields 16–17: Optional but High-Value

16. Mistake or rule tag. A short label when you broke a rule: e.g. "No stop", "Overtraded", "FOMO." Makes it easy to filter and count repeat errors—key when you use your journal to fix behaviour. 17. Emotional state or mood. One word or a short note (e.g. "Calm", "Rushed", "Revenge"). Optional but powerful: over time you see which moods lead to bad trades. If you're still choosing what to write in a trading journal, add these two once the first 15 are a habit; they turn your journal into a discipline and psychology tool.

How to Use These 17 Fields When You Write in a Trading Journal

Use the same 17 fields (or the subset you need) for every trade. One row per trade, one column per field. That way you can filter by pair, session, timeframe, or mistake tag and see win rate, average R:R, and P&L by group. Don't add fields on a whim—if you're unsure what to write in a trading journal, stick to these 17 until logging is automatic. Then add only if you really need something (e.g. account name for multiple accounts). A consistent set of fields is what makes a trading journal analysable; changing the list every week is what makes it useless.

What Not to Write in a Trading Journal

Knowing what to write in a trading journal also means knowing what to skip. Avoid: dozens of extra columns you never use, long essays per trade (one line for reason and notes is enough), and logging only wins. Skip fields that don't affect your decisions—e.g. broker name on every row if you have one account. Keep the 17 fields (or your chosen subset) and resist the urge to add more until you've used them for at least a few weeks. Less is more when you write in a trading journal.

Summary

What to write in a trading journal: 17 fields that actually matter. 1–4: Date, Time, Symbol, Direction. 5–8: Entry, Exit, Size, Stop loss. 9–12: Take profit, Risk-to-reward, Result, Reason for entry. 13–15: Session, Timeframe, Notes. 16–17: Mistake tag, Mood (optional). Use the same set every time so your data is consistent. Reason for entry is the one that turns a log into a journal. When you know what to write in a trading journal and stick to these fields, you build a log that actually pays off.