There is a version of the markdown conversation that happens in every brand, and it is almost always about the wrong thing. Someone pulls up the aged stock, everyone stares at the numbers, and the debate is about depth. Twenty off or thirty? Do we hold the line at forty? The room treats the size of the cut as the decision that matters, and it is not.
The decision that matters is when. A well-timed 20 percent recovers more cash and more margin than a panicked 40 percent taken six weeks too late, because by week six the units that would have moved at 20 have already stopped moving at anything. Depth is what you reach for when timing has already failed you. If you only fix one thing about how your brand marks down, fix the calendar, not the calculator.
This is the whole playbook in one line: start earlier than feels comfortable, cut shallower than you fear, and reset on a cadence rather than in a crisis. Everything below is how to run that in practice.
Start before the aging report tells you to
By the time stock reads as aged, the profitable window to move it has already closed.
The aging report is a lagging indicator. It tells you a style has been sitting, which means the demand for it softened weeks before the report caught up. If you wait for stock to fall into the aged bucket before you act, you are always starting the markdown after the easiest sales are gone.
The right trigger is sell-through rate against plan, not calendar age. A style pacing well below its plan at a point where there is still season left is the one to touch first, even if it is only four weeks old, because that is the moment a small cut still changes the trajectory. A style that is old but still selling to plan needs nothing. Age is a distraction. Rate against plan is the signal, and it turns early.
Think about what the aging bucket actually measures. It counts days on hand, which is a function of how much you bought as much as how well it is selling. Buy a style deep and it sits in inventory a long time even while it clears at a healthy rate, so it reads as old when it is fine. Buy a style shallow and it can be pacing badly for weeks and never trip the age threshold, because there was never much of it to age. The aging report is measuring the wrong thing, and it is measuring it late.
Starting earlier feels wrong because a shallow early cut looks like leaving money on the table. It is the opposite. The early cut is placed while there are still weeks of selling ahead of it, so a small nudge compounds across all of them. The late cut has almost no runway left, so it has to be deep to do anything, and deep is where the margin actually goes. The uncomfortable truth is that the cut you take too early costs you a few points on units that were going to clear anyway, while the cut you take too late costs you the entire margin on units that will not clear at all. Those are not symmetric mistakes, and the industry gets the asymmetry backwards every season.
Cut shallow, cut often, let cadence do the work
One well-timed step beats one big lever pulled in panic.
Depth is a blunt instrument. A single deep cut destroys margin on the units that would have cleared at a shallower price anyway, and it trains your customer to wait for the next big one. Cadence is the precise instrument. A shallow first step, held long enough to read the response, then a second step only if the rate still lags, moves the same stock at a materially higher average selling price.
The discipline is in the reading between steps. After the first markdown, sell-through either recovers toward plan or it does not. If it recovers, you hold and let it run. If it does not, you step again, and now you know the demand genuinely is not there, so the second cut is informed rather than hopeful. Each step is a question you ask the market, and you wait for the answer before you ask the next one.
There is a second reason cadence beats depth, and it is about the customer. A single deep cut is an event. It teaches everyone who follows your brand that if they wait, a big discount is coming, so your most price-sensitive customers learn to sit on their hands until you break. A shallow, quiet first step does not train that behavior, because it is not dramatic enough to build a habit around. You protect not just this season's margin but next season's full-price demand, which the deep-cut brands quietly erode every time they run a blowout to fix a timing miss.
full-price sell-through that category leaders hold, versus 57 percent for everyone else. The 14-point gap is mostly timing, not merchandising instinct.
That gap is what a disciplined cadence buys you. Leaders are not smarter about which styles to cut. They are earlier, so more of the buy clears before it ever reaches a markdown at all, and the cuts they do take are shallower because they were placed while there was still runway.
An early shallow cut beats a late deep one
Same aged units, same total exposure. The difference is when the first cut lands, not how deep it goes.
Run the cadence on the live signal, not the promo calendar
The markdown belongs to the sell-through curve, not the marketing plan.
Most markdown cadences are hostage to the promotional calendar. The cut waits for the next planned event because that is when the creative and the emails are ready, which means the timing is set by marketing logistics rather than by the state of the stock. That is how a style that needed a small nudge in week four ends up getting a deep hit in week nine alongside everything else.
The promo calendar also flattens everything into the same treatment, which is the opposite of what a good markdown does. A calendar event marks down a whole category or a whole floor at one depth on one date, so the style that needed 15 percent gets the same 40 as the style that was genuinely dead. You overpay on the ones that only needed a nudge and you are still late on the ones that needed early action. A calendar cannot tell those styles apart because it was never looking at their individual sell-through. It was looking at a date.
Put the cadence on the live sell-through signal and the calendar stops driving. The platform watches rate against plan by style, flags the ones drifting while there is still runway, and proposes the first shallow step with the reasoning attached. The planner approves the set, the response gets read automatically, and the next step is only proposed if the rate still lags. What was a quarterly firefight becomes a weekly rhythm you barely have to think about.
Depth is what you pay when you are late. Get the timing right and most of your markdowns are shallow, because they never had to be anything else.
One more thing the playbook changes is who owns the markdown. When timing drives, the decision moves from a quarterly committee to a weekly rhythm the planner runs, because the calls are small and continuous instead of large and occasional. Nobody has to defend a big number in a room, because there is no big number, just a steady stream of shallow, well-timed steps that each barely register. The politics drain out of markdown along with the depth, and that is not a side effect. It is what happens when you stop treating markdown as an event and start treating it as maintenance.
The playbook is not complicated. Start on the signal, not the aging bucket. Cut shallow and read the response before you cut again. Let cadence, not a crisis, set the rhythm. Do that and the depth question mostly answers itself, because you were early enough that you never needed to go deep.