How Much Stock Do You Need for a Retail Launch?

Anyone who quotes you a universal launch quantity is guessing. The honest answer depends on four inputs, and every one of them is arithmetic you can do before you sign anything: shelf fill, distribution centre pipeline, replenishment cover, and a promotional buffer.

The good news is you have time to do it. A first purchase order typically lands one to six months after a ranging win. The bad news is that production lead times, packaging runs and freight eat most of that window, so the modelling has to happen before the buyer says yes, not after.

Shelf fill is the stock that physically sits on shelves on day one, before a single unit sells. It comes off the planogram, the diagram that fixes where each product sits on the shelf and how many facings it gets. Facings times units deep, times store count, rounded up to full cases.

Illustrative arithmetic only: 300 stores holding six units each is 1,800 units on shelf before launch. If your case holds 12, the retailer orders in cases, so the real figure rounds up from there. A national pharmacy ranging can be a much bigger jump; Chemist Warehouse runs roughly 600 stores off six distribution centres, and one central buying decision can range you across all of them.

On top of shelf fill sits pipeline fill, the stock the retailer's distribution centres hold to replenish stores. Your first purchase order usually covers both, which is why it is larger than founders expect and why it arrives as one demand on your production capacity, not a gentle ramp.

Rate of sale is units sold per store per week, and it is the number most founders have not modelled. It drives every reorder. At an illustrative two units per store per week across 300 stores, you need 600 units a week of replenishment capacity, indefinitely, on top of whatever your own DTC channel sells.

Getting it wrong costs in both directions. Understock and you miss delivery windows, which damages your DIFOT, delivered in full and on time, the number your buyer checks before your story. Compliance failures commonly trigger chargebacks of 1 to 5 percent of invoice value, and empty shelf weeks depress the very rate of sale your next review will judge. Overstock and you carry dead inventory, fund markdowns, and watch cash sit in cartons.

Your DTC history is the best evidence you have, but it does not translate one for one. Retail shoppers buy on different occasions, at different price points, without your ad spend behind them. Treat your DTC velocity as a starting hypothesis, then pressure test it against comparable products in the category.

Trade spend, the rebates, co-op and promotional funding deducted before you are paid, commonly runs 10 to 25 percent of gross sales in Australian FMCG. Promotional weeks are where much of it goes, and promotional weeks sell materially more than base weeks. If you are on promotion in month two and have only bought stock for base velocity, you will short the order at the worst possible moment.

The calendar matters too. Categories are reviewed roughly every six months, and the review after your launch judges your sell-through. Presentation invitations can come with about two weeks' notice. Running empty during your launch quarter hurts twice: lost sales now, and a weaker case at the review that decides whether you stay.

Every unit of launch stock is paid for before the retailer pays you. Retailer margins vary by category, roughly 25 to 45 percent, and trade spend comes off the top of what remains, so the cash you recover per unit is thinner than your wholesale price suggests. Small suppliers get some relief at the entry stage; Woolworths pays small suppliers within 14 days. The working capital still sits with you between the production run and that payment.

This is not a theoretical risk. There were 871 first-time retail insolvencies in FY25, and overbuying launch stock against an unmodelled rate of sale is one of the classic paths there. Sometimes the right call is a smaller ranging first, or no ranging yet. The cheapest time to hear that is before the production run, not after.

Five numbers, in order. None of them require a relationship with a buyer. All of them require honesty about your own data.

This is the modelling the Retail-Readiness Sprint exists for: a fixed fee, about four weeks, covering your trade spend, your pricing waterfall, your category's review calendar and your compliance gap list, including the stock and cash curve of the purchase order you are hoping to win. You keep the model whoever you hire next, and sometimes its answer is: not yet. The buyer decides the ranging either way. The arithmetic just decides whether you can afford to win it.