Trendlines: The Sloping Line That Holds
Risk warning: Trendlines break often and every example here is education, not financial advice or a trading signal.
A trendline is a slanted line under rising lows or above falling highs. In an uptrend it acts as a floor that climbs with price.
You enter only after a retest of that line and a close back in the trend direction. No close, no trade.
Demo example — not a signal.
A floor that climbs
Think of a staircase. The railing rises with each step, and as long as you hold it, you are still going up.
Support and resistance are flat floors and ceilings. A trendline is the same idea that leans.
- Uptrend. Draw under the rising lows. Price bounces off it like the railing.
- Downtrend. Draw above the falling highs. Price slams into it on each bounce.
The line matters only where price has reacted before. Read Support and Resistance.
Draw from two touches
Work on H1 first. Lower timeframes produce lines that break on a whim.
- Find the pattern. In an uptrend, locate two swing lows where a pullback ended.
- Connect them. One straight line through both reaction points.
- Mark the story. Price returning to that line is a retest.
Two touches are a candidate. The third touch is when the line starts to mean something.
One line per chart is enough. A chart with ten lines is a chart where you are guessing. Read Trends: Trading With the River, Not Against It.
Third touch is a message
Think of a gate guard. One visitor turns him back, then a second, then a third. By the third time, the guard's rule looks intentional, not lucky.
Price behaves the same way at a trendline. Each bounce is a defender holding the line.
The line matters even more when it meets a round number or an old zone. Where two levels cross, price often reacts hardest.
Enter on the retest
Do not buy the first touch. Wait for the pullback that retests the line, then use steps:
- Confirm trend — H1 shows higher lows and higher highs. Only long reactions count.
- Let price come — price pulls back to the line on M15. Set an alert and leave.
- Watch the close — wait for a bullish M15 close that ends near its high.
- Check the wick — a low wick that poked below the line and closed above adds proof.
- Write the plan — entry, stop, target, and invalidation before you click.
A strong candle in open space proves little. The same candle at your line is information. Read Reading Candle Proof.
Stop beyond the line
A line is not a laser. Treat it as a thin zone.
- Stop. Place it a few pips below the line, past the wick noise.
- Rule. A full-bodied close below the line kills the idea. Stand aside.
- No rescue. Never widen the stop because price touched it.
On a $10 Cent demo, risk stays near $0.10. Small risk lets you test the line twenty times. Read Stop Loss: Your Automatic Brake Pedal.
Target before the next ceiling
Price rarely breaks resistance on the first visit. Aim short of it.
- Measure. From entry to the nearest old resistance or swing high.
- Demand 1:1. Skip the trade if the target is closer than your stop distance.
- Same ruler. Some traders aim for 1:3. The minimum keeps you out of cramped trades.
A trendline entry without a measured target is a guess with a stop. Read Risk-Reward Ratio.
When the line breaks
Two outcomes confuse beginners at a retest.
- Wick through, body back. Price dips below the line but closes above it. The line still holds.
- Strong close below. The body breaks the line and stays there. The buyers lost the railing.
Never buy the dip just because price looks cheap. A close below the line is your exit signal, not your entry signal.
Check during the London and New York overlap, around 1pm–5pm WAT, then step away. Read Real or False Break and FOMO.
Common mistakes
Forcing the line
Drawing through candle bodies until the chart fits a story. Draw from real reaction points only.
Ten lines
Adding a new line after every pullback. Clutter means guessing, not analysis.
Trading the middle
Buying between the line and nowhere because candles look strong. No line means no address for your stop.
Catching the broken line
Buying right after a strong close below the trendline. Wait for the next structure instead.
Watching every tick
Staring turns small dips into panic exits. Alerts protect the plan better than eyes do.
Your practice task
Use replay mode or a demo chart. Do not fund an account for this exercise.
- Open EUR/USD on H1 and label the trend: up, down, or wait.
- Draw one trendline from two touches only, then mark every later touch.
- Drop to M15 when price returns and advance candles one by one.
- Label each retest — no close, close at the line, or strong close through.
- Log 20 retests with screenshots, stop line, and reward-to-risk math.
- Score rule-following — did you wait for the close every time?
Do this before any live click. Read How to Use a Demo Account Before Risking Real Money.
Next in series
A trendline trade is the same five-point process: risk, direction, area, proof, exit. The line is just a slanted area.
Continue with Double Bottom Entry, the buy-side mirror of this lesson, or return to the series hub.
Bottom line: Buy only after a pullback closes back above a rising trendline with at least three touches. Risk near 1%, stop below the line, and step away when price closes through it.
Part of the KoboFX Price Action Series. Cross-links: Trends, Support and Resistance, Reading Candle Proof, Real or False Break, Marking Important Areas.
Frequently Asked Questions
What is a trendline in forex price action?
A trendline is a slanted line you draw under rising lows or above falling highs. In an uptrend it works like support that climbs with price. In a downtrend it works like resistance that slides down with price.
How many touches does a trendline need?
Two touches let you sketch the line. The third touch gives it meaning, because price reacting there again shows the pattern is real. Each extra touch is another vote from the market.
Where do I place my stop loss on a trendline trade?
Place the stop beyond the line with a small buffer of a few pips, because a line is not exact. If price closes strongly through the line, the idea is wrong and you stand aside.
Do trendlines always hold?
No. A trendline is a record of buyers or sellers defending a level, not a promise. Treat it as a thin zone: wait for the candle close and always keep a stop on the far side.