Working Capital: How Much Cash a Phone Reselling Operation Really Ties Up

Most conversations about phone reselling happen at the unit level: buy at one price, sell at another, keep the spread. The number that actually decides whether the business survives its first year is a different one — how much cash is locked up between the moment you pay a supplier and the moment a customer's money lands in your account, and for how long. A reseller earning 20% gross margin on a 90-day cash cycle can run out of money faster than one earning 12% and turning stock every three weeks. This guide walks one purchase through the business to show where the cash sits, gives a simple way to estimate the figure for your own operation, and sets out the levers that genuinely shorten the cycle.

Where the cash sits: six stages of one order

Follow a single wholesale purchase from payment to payout and the cash disappears in a predictable sequence.

• Prepayment. New wholesale accounts pay before dispatch — in full, or a deposit with the balance before the goods leave. Our guide to payment terms in B2B phone wholesale explains why that is the default. From a cash point of view it means day zero is the day you pay, not the day you receive.
• Transit. A day or two from a well-run EU supplier with next-day shipping, a week or more from further afield or through consolidation. Stock in a van is cash you cannot sell.
• Intake and testing. Every unit gets an IMEI check, a functional test, a grade against your own standard, photographs and a listing. For an operation where receiving is not the only job, a batch of 100 units realistically takes two to five working days to reach "for sale".
• Days in stock. The largest block by far. Fast models in popular storage sizes clear in a week; a slow grade-C variant can sit for six weeks. Our guide to sell-through rate covers how to measure this properly — it is the single number that moves working capital most.
• Receivables and payout delay. Selling B2B on terms adds 14 to 30 days after invoice. Marketplaces typically release funds only after delivery is confirmed and a hold period has passed, which can mean two weeks or more between the sale and usable cash. Card sales in your own shop settle in days. The same phone at the same price produces very different cash timing depending on the channel.
• Returns reserve. A share of sold units comes back inside the return window. Until that window closes, the money is not really yours. See our guide to wholesale phone returns for what a realistic rate looks like.

Add the stages together and you have your cash cycle in days. Everything else in this guide follows from that number.

The formula, and a worked example

Working capital tied up in stock is, to a good approximation:

daily cost of goods sold × (days from payment to receipt + intake days + days in stock + days waiting for payout)

In most other trades, supplier credit shortens that bracket because you sell before you pay. In used-phone wholesale the opposite is usually true for a new account: you pay before the goods move, so supplier terms lengthen nothing and shorten nothing until you have earned them.

Take an illustrative operation buying €60,000 of stock a month at cost — about €2,000 a day. Its cycle looks like this: payment two days before dispatch, two days in transit, three days of intake, 25 days in stock on average, ten days waiting for marketplace payouts. That is 42 days, so roughly €84,000 is permanently locked in the business — 1.4 months of purchasing, funded before a cent of profit is seen. Now cut average stock days to 15 by buying only what the channel clears, and payout to five by shifting part of the volume to direct B2B sales: the cycle drops to 27 days and the cash locked up falls to about €54,000. Same revenue, €30,000 released. That is the entire argument for buying smaller and more often, and it is a larger number than most resellers will ever save by negotiating unit price.

VAT timing: a float, not working capital

VAT distorts the picture in two directions, and both are worth understanding before you read your bank balance as "available".

Under the margin scheme — which is how marginal VAT stock is sold — the invoice you pay includes VAT you cannot deduct, so the full invoice amount is real cash out. On the other hand, the VAT you owe on resale is calculated on your margin only and is paid at your filing date, weeks later. Under the standard regime with intra-EU reverse charge, no VAT changes hands at purchase, but you charge output VAT on the full sale price and hold it until you remit it. That collected VAT sits in your account and flatters the cash position for the whole filing period.

The rule is simple: VAT you have collected but not yet paid is not working capital. Businesses that spend the VAT float on the next order discover the problem on the filing date, when a purchase they cannot undo collides with a liability they cannot defer.

The hidden cost of holding: depreciation

Cash tied up in stock has a second cost that a balance sheet hides. Used phones lose wholesale value while they sit — steadily month to month, and in steps around new-model launches and seasonal demand shifts. Our guide to seasonal used iPhone pricing sets out the pattern. A unit held for 40 days instead of 15 is not only locking cash for an extra 25 days; it is also absorbing whatever the market did in those 25 days, and the market rarely moves in a reseller's favour on stock that is already ageing. Slow stock costs twice.

Levers that actually shorten the cycle

• Order to a two-week horizon, not a quarter. Smaller, more frequent orders close to the supplier's minimum cost slightly more per unit and far less in cash. Our guide to MOQ and pricing tiers covers how tier pricing works; run the holding cost against the tier discount before you chase the bigger tier.
• Buy what clears, not what looks cheap. A list price that is 8% under market on a model your channel does not want is a 60-day hold, not a bargain.
• Sample a new supplier or SKU before volume. A sample order costs a fraction of a mistaken pallet and tells you the real intake time and return rate for that stock.
• Earn terms deliberately. Pay on time, keep the order pattern regular, and ask for partial terms once there is a track record. Each day of supplier credit is a day off the cycle.
• Blend channels. B2B lots sold at a thinner margin with cash in days can fund the retail stock that earns more but pays later.
• Set a hard age limit. Any unit past a fixed number of days in stock gets repriced automatically rather than defended. The discount is almost always smaller than another month of holding.
• Never fund stock from the VAT float. See above.

What this means when choosing a supplier

Once you think in days rather than unit prices, the supplier comparison changes. A supplier who ships next day across the EU, sends the IMEI manifest before dispatch so your checks run while the goods travel, and grades consistently enough that intake is a confirmation rather than a re-grade, removes days from three stages at once — and days are cash. A supplier with no minimum order quantity lets a first order be sized to what you can actually clear in two weeks instead of what a tier table demands.

SmartChoice ships next day EU-wide, sends the IMEI manifest at packing, has no minimum order quantity, and sells 100% marginal-VAT stock with the VAT treatment stated on every invoice. Current stock by model, storage and grade is at shop.smartchoice.ee/stock.

This article is general information for business owners, not financial or tax advice. Your accountant should confirm the VAT treatment that applies to your registration.

FAQ

How much working capital do I need to start reselling used phones?

Enough to fund one full cash cycle plus a buffer, rather than a fixed sum. Estimate your daily cost of goods sold, count the days from paying a supplier to receiving payout from a customer, and multiply. For a new operation with prepayment and marketplace sales that bracket is commonly 30 to 45 days, so a business planning €30,000 of monthly purchases should expect to have €30,000 to €45,000 locked in stock and receivables at any time, before profit.

Does marginal VAT stock tie up more cash than reverse-charge stock?

At the point of purchase the invoice for margin-scheme stock is the full price with no deductible VAT, so the cash out is the whole amount. Reverse-charge purchases move no VAT at purchase but create output VAT on the full sale price later. The net cash effect over a filing period is mostly timing; the real difference is total VAT cost on resale, which is usually lower under the margin scheme and is covered in our marginal VAT guide.

Should I finance stock with a credit line or supplier terms?

Supplier terms earned through a track record are the cheapest form of stock finance because they cost nothing beyond reliability. Borrowed money against used electronics is available but priced conservatively, and the interest is a direct deduction from a margin that is already thin. Shortening the cycle is almost always cheaper than borrowing to lengthen it.

What is a good stock turnover for a used phone reseller?

Measure it rather than adopt a benchmark, because it depends entirely on channel and model mix. As a working target, popular models in mainstream storage sizes should clear inside 30 days from arrival, and anything past 45 days deserves a price review. Our sell-through guide covers the calculation.

How do returns affect working capital?

A returned unit reverses a sale you may already have counted, then re-enters intake and stock, so the same cash goes round the cycle twice. Hold a reserve equal to your realistic return rate multiplied by the value sold inside the current return window, and treat that reserve as unavailable until the window closes.