In short: NinjaTrader 8 and a chart. That is all Monthly H/L Lines needs.
Five days of chart history is enough. Older months come from NinjaTrader’s monthly bars, so they show on a short chart too; a line then starts at the first loaded bar instead of its month’s first bar.
High, mid and low of the month in progress, moved the moment price sets a new extreme.
On by default: a year of months on one chart, the older ones dimmed step by step.
Show the mid of the current month and of any month back, on its own if you like.
Set every line and label up exactly the way you like it to look.
You might ask why this is free, and what the catch is. There is none. We want to change the market for third-party NinjaTrader tools, and giving our work away is part of how we do it.
To say it plainly, this market is overpriced and full of low-quality tools with missing features and bugs. Vendors charge hundreds of dollars for simple indicators. No indicator, add-on or tool will make you profitable. A good one makes your trading environment better, and you know that already, or you would not be here looking.
Our goal is the highest-quality products we can build, tools that make a real difference on the chart. We get there by testing hard, on live charts before every release, with feedback from the traders who use them and a close read of what the forums complain about. We offer a full refund within 14 days, we adapt tools for customers who ask, and we give most of our work away.
Most of our tools are free for a reason. We want you to try them, see the quality and the features for yourself, and not spend a dollar with us until you think a tool deserves it. We are a business and we intend to make money, by solving real problems for traders.
So yes, Monthly H/L Lines is completely free, no strings attached. If you like it, there are more free tools and paid ones priced well under what is usual in this market. If you have any questions, please email us at support@usefulindicators.com.
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Four ways to trade around the levels the whole market already has marked. None of them is a signal; the entries, the stops and the discipline are still yours.
Price runs into last month’s high and stalls, at a level every swing and position trader can see. A rejection there is a fade with the whole market watching the same price.
Price closes beyond last month’s high or low and holds: the market accepting prices outside last month’s range. Trade the retest, or trail the move with the level behind you.
When two months’ highs, or two months’ lows, sit within a couple of ticks, the label says so: Prev High (Aug 2026) ~2M. Mark those stacked levels before the session, not after the bounce.
Above this month’s open, the month’s buyers are ahead; below it, the sellers. One line that keeps your intraday trades on the right side of the month.
New to trading key levels? Read the full guide →
Can’t find the answer to your question? Email us, we answer fast.
Download the zip, then in NinjaTrader 8 go to Tools → Import → NinjaScript Add-On and pick the file. Add it to any chart from the Indicators list, where it is called MonthlyHLLines, and the monthly levels are drawn — most traders are done in under a minute. The step-by-step guide covers every message NinjaTrader can show and the update rule.
Genuinely free — no trial period, no locked settings, no license key, nothing to upgrade to. We sell other indicators; free tools like this one are how we show you the quality of the work first.
From 1 to 24, four by default, counting the current month. The older months come from NinjaTrader’s monthly bars, so they appear even when your chart has only a few days loaded; on a short history a line starts at the first loaded bar instead of its month’s first bar.
For every month: the high, the low and, if you switch it on, the midpoint. For the current month it can also draw the opening price. The current month has its own styles, dashed by default with the open dotted, and every line has its own color, width and dash. Lines start at the month’s first bar and run to the right edge by default; they can also span the whole chart, stop at the current bar, or be left off for labels only.
When a month’s high lands within a set number of ticks of another month’s high, its label says so — for example Prev High (Aug 2026) ~2M, meaning last month’s high sits on the high from two months back. Lows are checked against lows the same way. The distance is two ticks by default, up to 20, or zero to switch it off.
One row per month: its tag (Curr, Prev, 2M…), the month and year, its high and low, and the range as a percentage of the low, with the current month marked by an asterisk. It is off by default and sits in any corner you pick.
Thirty-two settings in seven groups, and the six things they add up to. The names in bold are the names in the indicator’s settings window.
Months to Show draws this month and the completed months before it, from 1 to 24, four by default. Set it to 2 and untick Show Current Month and only last month’s high and low remain. Every month is a calendar month, so the levels roll over by themselves when a new month begins. The High Lines and Low Lines groups give the finished months their own color, thickness and dash.
Past months come from NinjaTrader’s own monthly bars, so all 24 show even with only five days of chart data loaded; a month that began before the loaded history starts its line at the first bar on the chart. On Renko, range and Heikin-Ashi charts the monthly bars set this month’s high and low too, so a brick that straddles the month end never carries last month’s prices into this one.
Show Current Month keeps the forming month on the chart, its high and low moving with every new extreme, and the Current Month group dresses it in its own High Line, Low Line and Mid Line, dashed by default. Show Open Line marks the month’s first traded price, gold and dotted, with its own Open Line and Open Label Color: above it, the month’s buyers are ahead.
The Mid Line group’s Show adds each month’s halfway price, off by default. Fade Older Months dims older months in steps, down to a fifth of full strength, while this month stays at full strength. Line Extension runs a level from its month’s first bar to the right edge, across the whole chart or to the current bar, or draws no line and keeps the labels.
Show Labels writes each level at its price. Show Month gives Curr, Prev, 2M and back, Show Level Name says High, Low, Mid or Open, Show Price adds the price and Show Date the calendar month, such as (Mar 2026), which helps two years out. Vertical Placement sets the text on, above or below the line, and Horizontal Position at the price scale or the month’s first bar; Label Background boxes them.
Confluence Detection (ticks) checks each month’s high against the other months’ highs and each low against the lows. Within the distance, 2 ticks by default and up to 20, the label says so, as in Prev High ~2M. Show Info Box lists every month shown with its high, low, range as a percent of the low and month, this month starred, in the corner Info Box Position picks.
No. The monthly levels never pull the price scale, so a low from a year ago does not compress today’s bars. Scroll the price axis if you want to see a level that is off screen.
No. When nothing on the chart has changed — the same high, low and open for the month, no new bar, no setting touched — it skips the redraw entirely, which is almost every tick. If your chart ever lags with it on, email us: that’s a bug, not normal.
Yes. At its defaults it draws last month’s high and low and the two months before them, plus this month as it trades. For last month alone, set Months to Show to 2 and untick Show Current Month. Every level carries its calendar month, such as Prev Low (Aug 2026), and the older months come from NinjaTrader’s monthly bars, so they show on a short chart too.
No. NinjaTrader 8’s Prior Day OHLC and Current Day OHL cover the day only. Its Pivots indicator can switch to a monthly range, but it plots pivot levels calculated from last month’s high, low and close, the pivot with three levels either side, not the month’s high and low themselves. Our key levels guide lists everything that ships.
Yes. Run it next to its free twin, the previous week high and low indicator. The label text tells them apart, Prev High (Aug 2026) for a month and Prev High (Sep 6) for a week, but both ship in the same green and red, so give one of them its own colors. Where a monthly and a weekly level sit at the same price, set one indicator’s Horizontal Position to Left so the labels sit apart. Neither pulls the price scale.
As the big-picture levels on an intraday chart. Last month’s high and low are where a whole month of buying and selling ran out, and position and swing traders watch them, so a test of one tends to draw a reaction: a rejection to fade, or a break that holds into a new range. The indicator marks the levels and gives no signals; the trade stays yours.
Email support, answered by the traders who built it. Bugs get fixed — this tool gets the same updates and support as our paid indicators.
Free, no card, no license key. Download it, import it, and the monthly levels are on your chart in under a minute.
Not for you if you want the tool to tell you when to buy and sell. Monthly H/L Lines marks the levels the market watches; the trade is yours.
Pairs well with Free VWAP indicator · Key levels indicator (Intraday Reference Levels) · Free previous day high and low indicator (Daily H/L Lines) · Free previous week high and low indicator (Weekly H/L Lines) · Asian range indicator (SessionLevels)
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