Between a supplier invoice issued in one currency and revenue collected in another sits a margin line most brands never model: the exchange rate. This article shows where currency exposure actually enters the import cycle, how to size its effect on margin with a two-line calculation, and the structural responses that work without a treasury department. It is for founders and finance teams buying in RMB-linked terms and selling in dollars or euros.
Where exposure actually enters the cycle
Currency risk is not a single event but a sequence of dated commitments, each of which fixes a price in one currency against revenue you have not yet collected in another. The exposure points, in order:
| Exposure point | What gets fixed | What is still open |
|---|---|---|
| Quotation acceptance | Unit price and its currency; often a validity window | Everything downstream — the rate risk starts here |
| Deposit payment | Roughly a third of the payable, converted today | Balance, freight, duty, selling period |
| Balance payment | The remainder of the goods payable, weeks later | Freight settlement, duty at import, sales cycle |
| Inventory selling period | Nothing — costs are sunk | The revenue that must repay them, in your sales currency |
The structure to notice: your costs are fixed early and in the supplier's currency, while the revenue that repays them arrives late and in yours. The gap between those two moments — often two to five months on an ocean cycle — is the exposure window, and it is longer for slow-turning SKUs than for fast ones. A brand that prices a catalog once a year is carrying that window on every unit in between, whether or not anyone is watching the rate.
Sizing the exposure in two lines
The arithmetic is simple enough to run in a meeting. Your cost of goods is a share of price; a currency move of a given size applies to that share:
Margin impact = currency move × COGS share of price.
An illustrative scenario, illustrative only: a product sells at USD 30.00 with a fully loaded COGS of USD 12.00 — a 40% COGS share. If the currency your supplier invoices in strengthens 5% against your sales currency by the time you pay the balance, the cost of that same product rises to roughly USD 12.60, and contribution margin falls by USD 0.60 per unit — two full points of a 60% price, taken from the middle of the margin. Nothing about the product changed, no supplier raised a price, and no customer noticed anything; the move happened entirely inside the exchange rate. The same arithmetic runs in reverse, which is exactly why the risk is systematically undermanaged: long quiet stretches punctuated by moves that feel like rounding errors until they are multiplied by a cost base.
Currency does not need to crash to matter. A few percent applied to the COGS share of price, sustained for a season, is a repricing of your entire catalog that nobody approved.
Invoicing currency: who carries the risk
The first structural decision is which currency the supplier invoices in. Chinese factories commonly quote in USD, and a USD quote feels like protection — but it is mostly an illusion. The factory prices its USD quote off its RMB cost base with a buffer for movement, and refreshes that buffer whenever the rate moves against it; quote validity windows of thirty or sixty days are exactly this hedge being passed to you. You are carrying the risk either way; a USD invoice merely hides the mechanism and adds a margin for the factory's trouble.
The honest version of the same bargain: accept the invoice currency, but read the validity window as a price. A quote valid for 30 days at one level and repriced after is the factory transferring rate risk with a date on it. Track quote validity alongside unit price when comparing suppliers, because a longer window is worth real money in a moving market — and when a factory reprices mid-negotiation on currency grounds, ask for the RMB-denominated price instead. Pricing in the factory's own currency removes its buffer, usually improves the number, and moves the exposure to where you can actually manage it: your own books.
Structural responses without a treasury desk
Small importers cannot and should not run an active currency desk. What they can do is structure the exposure so that ordinary bookkeeping manages it:
- Measure quarterly. Compute the COGS share of price for the catalog and run the two-line impact at a few hypothetical move sizes — 3%, 5%, 10% — so the sensitivity is a known number, not a worry.
- Natural hedge where possible. If you sell into markets whose currencies differ from your purchase currency, hold balances in the purchase currency as collections arrive and pay suppliers from that pool, converting only what operations need. Every conversion you skip is a spread you keep.
- Convert on schedule, not on feel. Fix a rule — convert when the balance is due, in the amount that is due — so the process is not hostage to anyone's forecast of the market. Forecasting currencies is not a small business's comparative advantage; scheduling is.
- Know the instruments exist. Forward contracts — locking today's rate for a future payment date — are offered by most banks and fintech payment providers even at small volumes. For seasonal buys with fixed payment dates, a forward converts an unknown into a known for a modest cost; treat it as insurance on large, dated commitments rather than as a routine tool.
- Watch the spread, not just the rate. Payment providers' conversion spreads and wire fees are a certain, permanent loss on every payable, paid regardless of what the market does. Audit the actual all-in cost of moving money at least annually — it is the one currency number you fully control.
Price with a buffer, trigger with a rule
Pricing absorbs the residual risk the structure cannot remove. Two practices keep it deliberate. First, build the buffer into the pricing model rather than into hopes: when setting prices from landed cost, carry a small band for currency movement on the COGS share — the two-line calculation tells you what a realistic move costs, and the price should not assume zero. Second, define repricing triggers in advance: if the rate moves beyond a stated threshold from the level used in the model, the model refreshes and pricing decisions are taken with current numbers. The trigger converts currency from a slow drip that people notice late into an agenda item that arrives on schedule, next to the freight and duty reviews it belongs with — the same discipline as the landed-cost model refreshed quarterly, and the scenario planning described in tariff and landed-cost planning.
Currency is the quietest line in the cost stack precisely because it never appears on any invoice as its own item. Model it, structure around it, and it stays quiet; ignore it and it reprices the catalog on its own schedule. If you are selling into the United States or Europe while buying from Chinese suppliers, the mismatch is structural — see the Europe guide for how cost and revenue currencies line up on that lane, or send us your current model and we will stress-test the cost side with you.
