How to Write a Trading Plan: Setup, Trigger, Invalidation and Exit

How to Write a Trading Plan: Setup, Trigger, Invalidation and Exit

A chart idea becomes a trade only after its conditions are defined. A usable trading plan says what must be true before entry, what exact event triggers an order, where the thesis fails, how much capital is at risk, and how the position will be closed. Writing those decisions before the price moves reduces improvisation when money and emotion are involved.

বাংলায় পড়ুন: Trading Plan কীভাবে লিখবেন: Setup, Trigger, Invalidation ও Exit

Learning objective: turn a market observation into a testable trade plan with separate setup, trigger, invalidation, sizing and exit rules, then record the result without rewriting the original thesis.

1. Start with the instrument and timeframe

Write the exact instrument, venue and intended holding period. “Buy gold” is incomplete: spot gold, a COMEX futures contract, a miner and a gold ETF have different hours, costs, leverage and tracking behaviour. A daily swing plan also needs different execution rules from a five-minute trade.

Record:

• instrument and contract or share class;
• decision timeframe and entry timeframe;
• long, short or conditional direction;
• trading session and expiry, if relevant;
• scheduled events during the expected holding period.

The CFTC advises traders to understand how securities, futures, physical commodities and commodity products differ before acting. A method learned in one market does not transfer automatically to another.

2. Separate context, setup and trigger

These three statements are related but not interchangeable.

Context describes the wider environment: for example, the daily trend is rising, price is above a 50-day average, or an earnings announcement is due tomorrow.

Setup defines the conditions that make the idea eligible: price has pulled back into a previously defended support zone while the daily trend remains intact.

Trigger is the observable event that permits an order: a four-hour candle closes back above the prior candle's high, or price trades through a defined level with a minimum volume condition.

CME Group's trade-plan lesson similarly distinguishes setups from trigger points and recommends writing exact entry and exit criteria. Without a trigger, a trader can enter early because the setup “looks close enough.” Without a setup, a trigger can become a random price movement with no broader thesis.

3. Define invalidation before the entry

Invalidation is the evidence that makes the original idea wrong or no longer worth trading. It should follow the thesis, not the amount of money the trader hopes to avoid losing.

For a support-reclaim idea, invalidation might be a daily close below the support zone. For an earnings-gap continuation, it might be a complete fill of the gap or loss of the opening range. Write the market condition first, then convert the distance from planned entry into cash risk.

A stop order is an execution tool, not a guarantee of the planned exit price. FINRA's order-type guidance explains that a stop can execute well away from its trigger in fast markets, while a stop-limit controls price but may not execute. Add a gap and slippage assumption instead of treating the chart distance as the worst possible loss.

4. Calculate size from the invalidation distance

A simple educational framework is:

Cash risk budget = account equity × chosen risk fraction

Units = cash risk budget ÷ risk per unit

Risk per unit includes entry-to-stop distance, instrument multiplier, estimated fees and a realistic slippage allowance. It is not the purchase price.

The chosen risk fraction is a personal research and risk-governance decision, not a universal percentage. It must also fit portfolio concentration, correlated positions, leverage and gap exposure. See the fuller position-sizing and risk-budgeting guide.

5. Write more than one exit

Every plan needs an adverse exit. It also needs rules for a favourable move and for a trade that goes nowhere.

• Protective exit: the invalidation condition and the order used to act on it.
• Profit exit: a fixed target, trailing rule, opposing signal or staged reduction.
• Time exit: close or review after a defined number of bars if the expected move has not begun.
• Event exit: reduce or close before earnings, a central-bank decision or contract expiry when the plan does not include that risk.

Do not combine incompatible choices after entry. “Target unless it looks strong, then hold” cannot be tested. If discretion is allowed, define the evidence that permits it and the maximum extra risk.

6. Worked example

Assume a hypothetical UK-listed share is in a rising daily trend. A previously broken resistance zone at £48.80–£49.20 has acted as support. This is educational arithmetic, not a live recommendation.

Context: daily higher highs and higher lows remain intact; no company results are scheduled during the planned five-day holding window.

Setup: price tests £48.80–£49.20 and does not close below £48.50 on the daily chart.

Trigger: buy only if a four-hour candle closes above £50.00; planned entry for sizing is £50.10.

Invalidation: the thesis fails below £48.40. Entry-to-stop distance is therefore £1.70 per share.

Risk budget: a hypothetical £20,000 account uses a research limit of 0.5%, or £100. Estimated fees and slippage add £0.10 per share, making modelled risk £1.80.

Size: £100 ÷ £1.80 = 55.5, rounded down to 55 shares. Modelled risk is £99, before an exceptional gap.

Exit: take no trade if price gaps above £51.00 before the trigger can be acted on; exit on the invalidation rule; review after five sessions; consider a planned reduction near £53.50 only if that target is part of the original test.

No-trade conditions: results are brought forward, spread widens beyond the plan's limit, or the trigger occurs after a market-wide shock that changes the setup.

The example makes the sequence clear: thesis determines invalidation, invalidation distance determines size, and size does not move the invalidation closer merely to permit a larger position.

7. Add no-trade conditions

A plan is incomplete if every market state produces an entry. List conditions that cancel the idea:

• trigger arrives outside the chosen session;
• price gaps so far that reward relative to risk changes materially;
• spread, depth or volatility exceeds a defined limit;
• scheduled news falls inside the holding window;
• maximum daily or portfolio risk is already used;
• correlated exposure would breach a portfolio cap;
• data, platform or order-routing problems prevent controlled execution.

“No trade” is a valid planned outcome. It preserves the definition of the setup and prevents fear of missing out from changing the test.

8. Preserve the original plan in the journal

Save the plan and timestamp before entry. Record actual fills, costs, chart screenshots and any deviation separately. Do not edit the original trigger or invalidation after the result is known.

During review, score two things independently:

1. Process: did execution follow the written plan?
2. Outcome: what return, risk and excursion occurred?

A losing trade can follow a sound process, while a profitable rule violation can be poor process. Repeated records allow the setup to be tested; rewritten memories do not. The trading-journal guide provides a fuller review structure.

Common mistakes

1. Writing “bullish” without a measurable setup or trigger.
2. Choosing position size before defining invalidation.
3. Moving the stop closer only to buy more units.
4. Treating a stop trigger as a guaranteed fill price.
5. Adding a profit target only after the position moves favourably.
6. Ignoring the spread, contract multiplier, gap and financing cost.
7. Entering after the planned price has run away because the idea still feels right.
8. Editing the original plan after seeing the result.

Practical checklist

• Exact instrument, venue and contract identified?
• Decision and execution timeframes stated?
• Context, setup and trigger written separately?
• Invalidation follows the thesis?
• Cash risk includes multiplier, fees and slippage?
• Position size rounded down to a tradable unit?
• Protective, profitable and time exits defined?
• Gap, event and correlated-portfolio risks checked?
• No-trade conditions written?
• Plan saved before entry and actual execution logged separately?

The Money Man View

The useful part of a trading plan is not prediction; it is decision control. A plan turns a vague opinion into conditions that can be followed, rejected and later tested. If the trigger, invalidation or size cannot be written before entry, the idea is not yet ready to risk capital.

Educational risk disclosure

This tutorial uses a simplified hypothetical example and was prepared with AI-assisted research and writing under The Money Man editorial workflow. It is educational information, not personalised investment advice or a recommendation to trade the example. Stops may fill away from their trigger, limit orders may remain unfilled, and leveraged trading can produce losses larger than the planned amount.