Your stock sleeps and your money with it: the second-hand seller's cash flow

8 August 2026 · 9 min read · By the Dresskool team

There are months when everything goes well. You've sold steadily, the reviews come in, the parcels go out. And yet, when you look at your bank account, there's nothing more than the month before.

It isn't a maths error and it isn't a margin problem. It's a cash flow problem: your money really does exist, but it's stored away in boxes as clothes that haven't sold yet.

It's the most common blind spot among second-hand sellers, because it shows up neither in revenue nor in margin. Here's how to measure it and how to fix it.

The figure almost nobody calculates

Most sellers track two numbers: what they took in this month, and what each piece earns them. Both are useful and both completely miss the point.

The missing number is the money tied up: the amount you've spent to acquire the pieces still sitting with you, unsold, at this precise moment.

That amount isn't a loss. It's an asset, exactly like a shopkeeper's stock. But it's an asset that pays neither the groceries, nor the rent, nor the next batch. As long as it stays in the form of clothes, it does nothing but wait.

A business can post a perfectly decent margin piece by piece and still find itself completely stuck, because almost all of its cash is tied up in pieces that take six months to move. This is the situation where the seller tells themselves they're working hard for nothing, when the problem isn't the work: it's the pace at which the money comes back.

Three ways stock starts to sleep

The bundle bought whole. A bundle of thirty pieces at a good price almost always contains ten that sell fast, ten that sell slowly and ten that will never sell at the hoped-for price. The deal looks excellent at the moment of purchase because you're looking at the average price. Six months later, it's those last ten that take up the space and hold the cash.

The price never lowered. A piece listed at too high a price doesn't sell, and the more time passes, the harder it becomes to lower it, because lowering it means admitting you got it wrong. The price becomes a point of pride instead of a commercial decision.

The missed season. A coat bought in February won't sell before October. That isn't a mistake in itself, provided you decided on it. It becomes a problem when half the stock is out of season without that being a choice. Our article on the seasonality of second-hand selling lays out the calendar by category.

Turnover: the only measure that really matters

Turnover is the number of times a year your stock renews itself entirely. It's very simple to calculate: your purchases for the year divided by the average purchase value of your stock.

If you've bought 6,000 euros of pieces over the year and you hold 1,500 euros of stock at all times, your turnover is 4. Your money goes round four times in the year.

This figure changes everything, because the same margin produces radically different results depending on turnover. With 1,500 euros of cash and a margin of 60 percent, a turnover of 4 earns 3,600 euros in the year. The same cash and the same margin with a turnover of 2 earn 1,800 euros. The work is identical, the result is halved.

That's why a small-margin piece that sells in ten days is often worth more than a big-margin piece that sells in five months. The piece-by-piece calculation, detailed in our guide on working out your margin, should always be read with the time to sell alongside it.

The question to ask yourself before every purchase: not just how much this piece will earn me, but in how much time. A margin of 15 euros in three weeks is worth more than a margin of 40 euros in six months, because the first lets you buy again four times in the meantime.

Doing the calculation at home, in twenty minutes

No need for accounting software. A five-column table is enough, with one row per piece in stock.

  1. The piece and its date of entry into stock
  2. The price paid at purchase, fees included
  3. The listed price today
  4. The number of days since listing
  5. The number of views or favourites, if the platform gives it to you

Add up column 2. That's your money tied up. Then sort by column 4, from oldest to most recent. The first twenty rows of that sort are your cash flow problem, and often a very large share of the total sum.

This table is also the basis for clean bookkeeping the day the activity is registered, as explained in our article on bookkeeping for the second-hand seller.

Freeing up dead stock: four levers, in this order

1. A sharp cut on the oldest. Not 10 percent: a cut that changes price bracket. A piece listed for four months at 35 euros won't sell at 32. It might sell at 22. The loss against your initial hope is real, the loss against a box that doesn't move is nil.

2. Bundles. Three pieces of the same size or the same category sold together at a reduced price free up three rows of your table at once, with a single shipment.

3. Changing channel. A piece that finds no buyer on one platform can sell immediately elsewhere, at a car boot sale, a flea market or a thrift shop that buys back. The price is lower, the cash comes back straight away.

4. The clean exit. For pieces that have had no views in six months despite two cuts, donating or selling by weight closes the matter. It isn't a failure, it's a decision: you get the space back and you stop mentally managing stock that will earn nothing.

Not rebuilding the problem with the next batch

Freeing it up once is pointless if the buying rule doesn't change. Three simple guardrails are enough.

Set a ceiling for money tied up that you don't go past. As long as the stock exceeds that ceiling, you don't buy again, even on a good deal. It's the hardest rule to hold and the most useful.

Turn down bundles where you only want a quarter. The average-price calculation for a bundle is misleading: what counts is the price brought back to only the pieces you'll actually resell. Our pointers on sourcing clothes to resell explain how to sift through a bundle offer before accepting.

Decide on a price-cut date right from listing. Thirty days, then sixty. When the date is set in advance, the cut is no longer an admission, it's a planned step.

Past a certain volume, keeping this tracking by hand becomes the real bottleneck: that's the moment when a management tool like DressKare takes over from the table, keeping the history of each piece, its date of entry and its age online.

Structuring your activity instead of enduring it

The Dresskool course covers the whole path, from the first sort to steering the numbers: what you buy, at what price, and at what pace your money should come back.

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FAQ

What is dead stock in second-hand?
It's all the pieces bought for resale that are still in stock beyond your category's usual selling time, often beyond four to six months. It isn't an accounting loss, since the pieces keep a value, but it's cash tied up: that money can neither pay your costs nor go towards buying more stock as long as the pieces aren't sold.

How do I calculate my stock turnover?
Divide the total amount of your purchases for the year by the average purchase value of your stock over the same period. If you buy 6,000 euros over the year while permanently holding 1,500 euros of stock, your turnover is 4: your money goes round four times. The higher this number, the more result the same cash produces, at equal margin.

Is a big margin or a fast sale better?
It depends on your available cash. When money is limited, speed wins: a margin of 15 euros earned in three weeks lets you buy again and start over four times in the time a margin of 40 euros takes to materialise over six months. When cash is comfortable, high-margin, long-delay pieces become interesting again.

At what point should you lower a piece's price?
The most effective approach is to decide the dates right from listing rather than case by case: a first cut at thirty days, a second at sixty. A useful cut changes price bracket, it doesn't knock off three euros. A piece that has generated no views after two cuts belongs to an exit by bundle, through another channel or by donation.

Do you need software to track your cash flow?
No, not at the start. A table with the date of entry, the price paid, the listed price and the number of days online is more than enough for the first few dozen pieces. Moving to a management tool becomes useful when updating the table by hand takes more time than the decision it informs, generally from several hundred references onwards.