How to Calculate How Much Stock to Buy for a Clothing Store

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How much stock should I carry?" is probably the most common question new clothing retailers ask, and the usual answer ("it depends") isn't much help.

It does depend, but on things you can actually measure. Once you know your expected sales, your margin and how quickly you want stock to turn over, the right level of stock is a calculation, not a guess.

Why the number matters so much

Too little stock and your shop looks empty, your website looks thin and customers don't come back. Too much and your cash is locked up in clothes, you can't afford to reorder what's selling, and you end up discounting to get out of trouble.

For most independent retailers, overstocking is the bigger danger. Running low for a week is annoying. Carrying twice the stock you need for a whole season can sink a small business.

Step 1: Forecast your sales

Everything starts with how much you expect to sell. Work it out by month, in net sales (excluding VAT).

If you're already trading, use last year's figures for the same months and adjust for how the business is growing. If you're new, build it up from the bottom:

•       expected transactions per week (footfall x conversion, or website visitors x conversion)

•       average spend per transaction

•       multiplied up to a monthly figure

Be honest here. An optimistic forecast is the most common reason retailers overbuy.

Step 2: Convert sales into stock cost

Your stock is bought at cost, so convert your sales forecast into what that stock will cost you. If you price at 2.5x wholesale (net of VAT), your cost of goods is 40% of your net sales.

Example: you forecast £10,000 of net sales in October. At 2.5x, the stock you'll sell that month cost you £4,000.

Step 3: Decide how many weeks of stock to hold

This is where stock turn comes in. Stock turn is how many times a year you sell through your average inventory.

•       Stock turn = annual cost of goods sold / average stock held at cost

For an independent womenswear store, a stock turn of 4 to 6 a year is healthy. That means holding roughly 8 to 13 weeks of stock at any time. Online sellers buying from quick-delivery UK wholesalers can often run faster, with 6 to 8 weeks of cover.

Stock turn per year

Weeks of stock held

Typical for

3

about 17

Slower, high-value or heavily seasonal stores

4

13

Most bricks-and-mortar boutiques

6

about 9

Well-run boutiques buying little and often

8+

6 or fewer

Online stores with fast restocks

 

Using our example: £4,000 of cost of goods a month is about £920 a week. Holding 10 weeks of cover means an average stock of about £9,200 at cost.

Step 4: Plan purchases with open-to-buy

Open-to-buy (OTB) is the budget you have left to spend on stock for a period. It stops you buying on excitement and keeps your stock level where you planned it.

•       OTB = planned sales at cost + planned closing stock + planned markdowns at cost - opening stock - stock already on order

Example for October, all at cost:

 

£

Planned sales at cost

4,000

Planned closing stock at end of October

9,500

Planned markdowns

300

Minus opening stock on 1 October

-8,800

Minus stock already on order

-1,500

Open-to-buy for October

3,500

 

That £3,500 is your spending limit for October. If a great deal comes along, something else has to wait.

How many items should a new clothing store stock?

For a physical shop, your space sets a practical limit. A standard 1.2 metre rail comfortably holds around 40 to 50 garments without looking cramped. A small boutique with 10 rails plus some shelving and tables typically needs 500 to 700 pieces to look full but not overcrowded.

Online, there's no rail limit, but there is a visual one. A new site with fewer than 50 to 60 live styles tends to look sparse. More styles with fewer units of each is usually better than a handful of styles in depth.

How much should a boutique spend on initial stock?

Work it backwards from your weeks-of-cover target. If your first three months are forecast at £24,000 of net sales and you price at 2.5x, that's £9,600 of stock at cost over the quarter. You don't need all of it on day one.

A sensible approach:

•       spend 50% to 60% of the quarter's stock budget on your opening order

•       keep 20% to 30% for reorders of whatever sells fastest in the first four to six weeks

•       keep the rest for new styles to keep the shop fresh

This protects your cash while you learn what your customers actually buy.

How often should you reorder?

Little and often beats big and occasional for almost every independent retailer. Buying weekly or fortnightly from a UK wholesaler with fast delivery means:

•       less stock sitting idle

•       more new styles for customers to discover

•       quicker reaction to what's selling

•       less money lost to markdowns

Set a regular buying day, check your sales report first, and reorder against your open-to-buy.

Your stock level isn't a number you set once. It's something you manage every week, using sales, not instinct, as your guide.

FAQs

Frequently asked questions

How much stock should a clothing store carry?

Most independent womenswear stores do well holding 8 to 13 weeks of stock at cost, which equals a stock turn of around 4 to 6 times a year.

How do you calculate how much clothing inventory to buy?

Forecast your sales, convert them to cost using your markup, set a target weeks-of-cover, then use an open-to-buy plan to work out your spending limit for each month.

How many items should a new clothing store stock?

A small boutique usually needs 500 to 700 pieces to look full. Online stores should aim for at least 50 to 60 live styles at launch.

How much should a boutique spend on initial stock?

Use roughly 50% to 60% of your first quarter's stock budget on the opening order, and keep the rest for reorders and new styles.

How can retailers avoid buying too much stock?

Use an open-to-buy budget, forecast sales realistically, buy wide and shallow, and reorder little and often rather than in large seasonal drops.

Buying little and often is far easier with a supplier who delivers quickly. Urban Bella supplies UK retailers with regularly updated wholesale womenswear. Shop the latest drops at urbanbella.co.uk.