Initial Markup (IMU)

The arithmetic runs in both directions, and the basis has to be stated every time. IMU % = (retail − cost) ÷ retail; the retail that hits a target IMU is cost ÷ (1 − IMU %). A unit landed at $22.00 and first-ticketed at $55.00 carries an IMU of (55.00 − 22.00) ÷ 55.00 = 60.0%, and priced the other way a 60% target on that $22.00 cost returns 22.00 ÷ 0.40 = $55.00. Markup on cost is a different ratio on the same two numbers — 33.00 ÷ 22.00 = 150% — so quoting one basis while planning on the other is a straightforward way to misread a markup by a wide margin. The complement of the IMU, 0.40 here, is the cost complement, and it does more work than pricing: it is the multiplier that converts a plan held at retail into inventory at cost, which means the same figure that prices a style also sets the denominator of its GMROI.

IMU is planned rather than observed. Carry the same style-color through a season: 960 units sold for $47,190 against a $55.00 ticket, having given back $5,610 in markdown and promotional dollars. Cost of goods is 960 × $22.00 = $21,120, gross margin is $26,070, and maintained markup is 26,070 ÷ 47,190 = 55.2%. The mechanism is visible in the complement — reductions took 5,610 ÷ 52,800 = 10.6% of the ticket value, so the cost complement grows from 0.400 of ticket to 21,120 ÷ 47,190 = 0.448 of net sales, and the 60.0% initial markup realises as 55.2% maintained. Setting an IMU means running that arithmetic before the season, not after it: start from the maintained markup the plan needs, add the reductions the range is likely to take, and the sum is the markup the first ticket has to carry. An IMU set at the target margin itself has no room in it, and the first markdown puts the season under plan.

Three things an IMU figure hides. It is a ticket-price fact and says nothing about how many units sell at that ticket, so a rich IMU on a range that needs deep reductions to move lands under a modest IMU that holds. It aggregates by retail dollars rather than by style count: a class holding $36,000 of cost at $90,000 retail (60.0% IMU) alongside $24,000 of cost at $40,000 retail (40.0% IMU) carries a class IMU of 70,000 ÷ 130,000 = 53.8%, while averaging the two style figures returns 50.0% — 3.8 points wrong, and wrong in the direction that matters when the class margin is being defended. And it is only as good as the cost underneath it: the same $55.00 ticket against an $18.50 FOB quote reads 66.4% instead of the 60.0% it earns on a $22.00 landed cost, which is 6.4 points of markup that does not exist once freight, duty and handling are in.

The reductions that erode IMU are vertical-specific, so the gap planned into the first ticket is too. Apparel takes them at the seasonal exit, which is why the exit date is effectively a margin assumption. In footwear the tail sizes of a run clear below ticket while the core holds, so a style realises less than its IMU even when it sells well. In accessories and bags, hero colorways hold the ticket and fashion colorways carry the reductions, so the two are planned at different gaps. Home and furniture sets IMU on a landed cost that moves with container rates and cube-based freight, so a ticket set on a quoted FOB drifts. In outdoor and sporting goods, where MAP pricing fixes the first ticket, IMU becomes a cost negotiation rather than a pricing decision, and model-year closeouts take the reduction. Health and beauty consumes units as testers, gratis and gift-with-purchase that produce no retail, so a markup read on units shipped overstates the markup on units sold, and PAO and expiry dating force write-offs rather than markdowns. Toys and games carries safety testing and certification in landed cost and sells licensed product only inside its licence window. Baby and juvenile durable hard goods run on multi-year model cycles and carry regulated safety content in landed cost, so the first ticket has to hold its markup across a model run rather than a season, and a cost change mid-run lands on stock already ticketed. In jewelry and watches the metal cost can move after the ticket is set, changing the markup on stock already on hand.