🌍 Deep guide · ~12 min

Why Your Foreign Refund Came Back Smaller

You bought a €100 item abroad, returned it, and the merchant honestly refunded €100 — yet your statement shows 791.70 debited and only 774 back. 17.70 gone — and if you were DCC'd at checkout, more like 68. The merchant didn't skim it and your bank didn't miscalculate. A cross-border refund is converted a second time, at another day's rate — and the fees usually aren't returned. Here's where every unit went, and how to lose the least.

1. First: a refund does not delete the original charge

This is the root of every misunderstanding. Most people assume a return simply cancels the earlier charge. In fact the banking system has three completely different ways to give money back, and they behave very differently:

Method	When possible	On your statement	FX loss
Void (reversal)	On the spot, same day, before the merchant captures	The charge never appears; the hold just drops off	None
Refund	Any time after the charge has posted	Two lines: the purchase and a credit	Yes — the subject of this guide
Chargeback	When the merchant won't cooperate — you dispute with your issuer	Two lines, plus a dispute process (weeks)	Usually restored at the original amount

This one line saves real money: if you spot the problem at the counter, insist the cashier voids / cancels the transaction rather than "issues a refund". As long as the merchant hasn't captured it that day, a void pulls the transaction out by the roots and costs you nothing in FX. Once it's the next day and the batch has been captured, refund is the only route — and the FX loss becomes unavoidable.

2. Where the money actually goes: four sources

Source 1: two conversions, two dates

The biggest and least controllable piece. Your purchase is converted at the rate on its posting date; the refund is a separate new transaction converted at the rate on its own posting date. Whatever moved in between, you gain or lose.

And from handing the item back to the credit posting typically takes 5–15 business days (merchant processing plus clearing), longer over holidays. A 1%–3% move over two weeks is entirely normal.

Note this one cuts both ways. If your currency weakened over those two weeks, the refund comes back larger than the original debit. It isn't the bank skimming you — it's plain FX exposure. People just tend to notice it only when it hurts.

Source 2: the foreign transaction fee usually isn't returned

If your card charges a foreign transaction fee (FTF) — commonly 1.5%–3% — it was levied on the purchase. When you're refunded, most issuers do not give it back. Worse, a few treat the refund itself as a foreign transaction and charge again (increasingly rare, but check).

So on a 3% FTF card, buying and returning costs you 3% before the exchange rate even enters the picture. Which is exactly why a no-FTF card pays off most for people who return things.

Source 3: DCC refunds — marked up twice

This is the nastiest one, and entirely avoidable. If you originally chose to pay in your home currency (i.e. you got DCC'd), the refund goes through DCC too — converted back by the same provider at their own rate on the refund date.

The result is the markup taken twice: they charged you at a rate ~4% worse than mid-market going in, and refund you at a rate ~4% worse than mid-market coming out. Round trip, around 8% simply evaporates — nothing to do with market movement, just pure spread.

How to spot a DCC'd refund: the credit posts directly in your home currency (rather than the local currency converted by your bank) — the same symptom as the original charge. If the purchase was DCC'd, the refund almost certainly is too.

Source 4: the merchant refunds an amount, not the original transaction

A proper refund references the original transaction (carrying its reference number). Plenty of small merchants instead key in a fresh refund by hand. Then you can get:

A changed currency: you paid in EUR, the clerk refunds in USD at their own conversion — forcing yet another leg of FX.
Truncation or rounding: inconsistent decimal handling shaves off small change.
Bad partial refunds: returning one of two items, the merchant prorates on the wrong (pre- or post-tax) base.

So check the currency and amount on the refund receipt at the counter, and keep it with the original. If you end up disputing, that pair is your evidence.

3. Doing the maths: what a €100 return really costs

Assume a CNY card, mid-market 1 EUR = 7.80 CNY on the purchase date, and 1 EUR = 7.74 CNY when the refund posts two weeks later (EUR down 0.8%). Three scenarios:

Scenario	Debited	Credited	Net loss
A. No-FTF card, paid in local currency (best)	780.00	774.00	6.00 (pure FX drift)
B. 1.5% FTF card, paid in local currency	791.70	774.00	17.70 (6 FX + 11.70 unrefunded fee)
C. DCC'd (+4% in, −4% out)	811.20	743.04	68.16 ≈ 8.4% gone

Look at the spread: the same €100 item, bought and returned — 6 lost in the best case (uncontrollable FX), 68 in the worst, of which 62 was entirely avoidable. You can't control the market. DCC and fees, though, are decided in the three seconds at the checkout terminal.

→ Work out your own loss in the calculator

4. Six practical ways to lose less

Return on the spot and insist on a void. Same day, same store: "Can you void/cancel the transaction instead of refunding it?" If the batch hasn't settled, it costs you nothing.
Move fast. The longer the refund takes, the further the rate drifts. Don't sit on it until you're home.
Insist on the original card and original currency. The credit must go back to the same card in the same currency. Be wary of "we'll refund cash" or "to another card" — that's you taking the FX hit again.
If the terminal offers DCC again on the refund, still pick local currency. Some do ask twice. If the original was in local currency, the refund must be too — mismatched currencies cause bigger problems later.
Keep both receipts. Purchase and refund, photographed. Amount, currency, date, merchant name and last four digits — a dispute needs all of it.
Ask before a big-ticket purchase. On cameras, bags or duty-free goods, ask how returns are processed, how long they take and at what rate — especially where a tax refund is layered on top, which complicates the numbers further.

5. When you can actually dispute it

To be clear: a smaller refund caused purely by market movement is not disputable — the bank applied the rules correctly. But these are worth raising with your issuer:

The refund currency differs from the purchase currency and you never agreed to it.
DCC was applied without a clear choice. Network rules require the cardholder to actively choose DCC, with the rate and markup disclosed. A terminal that offered no option, or picked for you, breached that — complain.
The credited amount doesn't match the refund receipt (the merchant short-paid you).
The refund never arrives. Past the merchant's stated window (usually 30 days), you can dispute as "credit not processed".
You were charged twice. Two identical debits for one purchase — go straight to your issuer.

Disputes have deadlines (network-dependent, commonly 120 days from the transaction) — don't sit on it. Submit both receipts, the statement screenshots and your own calculation of the gap; it moves much faster that way.

6. Common questions

Will my foreign transaction fee be refunded?

Usually not. A few issuers (especially travel-focused products) refund it pro rata, but that's the exception. To be sure, read the foreign-transaction-fee line in your card's fee schedule, or simply ask the bank whether the fee is returned on a refund.

Why was my refund bigger than the charge?

The rate moved in your favour over that window. Perfectly normal, and no, the bank won't come back to claw it — it's the other face of two conversions.

Is a UnionPay card better for refunds?

On the no currency-conversion-fee front it's usually cheaper (see currency conversion fees) — one less USD-routing layer. But the two-date conversion still applies; the market-drift part is unavoidable either way.

How do partial refunds work?

Exactly like a full one: the returned foreign-currency amount is converted on its own at the refund's posting date, with no relationship to the original transaction's rate. So half the goods back is definitely not half your original debit back.

Does a hotel "pre-auth release" count as a refund?

No — and that's good news. A pre-authorization only holds your limit; no money actually moved. Releasing it removes the hold, with no conversion and no loss. If instead you see the deposit actually charged and then returned (two statement lines), you're in refund territory and the FX loss applies.

The short version

A cross-border refund is a separate new transaction, converted at its own posting date's rate, and the fees usually stay gone. Accept the few units lost to market drift — but the 8% from DCC is yours to refuse: pick local currency at checkout, and ask for a void rather than a refund at the counter. Those two habits save more over a year than most people expect.