# Matching Settlement Currency: The Change That Saved the Most

> We measured the same conversions with and without a currency mismatch. The difference dwarfed every other cost we had been optimising.

- Source: https://cryptofieldtest.com/offramp-currency-matching/
- Published: 2026-10-02
- Author: Chris Delaney
- Publication: Crypto Field Test — Wallets and exchanges, tested with real money
- Topic: offramp
- Tags: offramp, currency, testing

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We had been comparing providers on spread and withdrawal fee. Then we tested the effect of the receiving account's currency and found it dominated both. To reproduce any of this, [a crypto to fiat exchange](https://collectnexchange.com/services/crypto-offramp) is the easiest starting point because nothing has to be requested.

## The test

The same conversion, at the same provider, within the same window, settling twice: once to an account in the provider's settlement currency and once to an account in a different currency. Repeated at three providers.

## The results

**Provider A:** 0.19 percent matched, 1.31 percent mismatched.

**Provider B:** 0.34 percent matched, 1.12 percent mismatched.

**Provider C:** 0.28 percent matched, 1.94 percent mismatched.

Between four and seven times the cost, for the same sale at the same provider, decided entirely by which account received it.

## Where the difference sat

Almost entirely the currency conversion margin, between 0.8 and 1.6 percent depending on provider.

The withdrawal fee also rose, because the mismatched case used an international rail rather than a domestic one, adding a flat amount and one to three business days. The institutional version we tested through [a regulated European crypto platform](https://collectnexchange.com/), with its additional reporting.

## Why this is not obvious

The conversion happens after the sale, so it does not appear in the rate quoted for the crypto.

None of the three providers displayed the applied currency rate before execution. All three showed only the final amount, from which the margin can be calculated afterwards but not compared beforehand.

## The fix

Open an account in the currency the provider settles in.

For a European business converting through a European provider, that means a euro account. The one-off effort was repaid on the first meaningful conversion in every case.

## What we had been doing instead

Comparing spreads across providers, where the differences were fifteen basis points, while paying over a hundred basis points on a conversion we had never measured.

That is the wrong optimisation and we had been making it for months.

## The general lesson

Before comparing providers on any dimension, check whether a structural choice dominates the comparison.

Here it was the receiving account. Once matched, the provider differences became the small thing they appear to be, and the comparison we had been doing became worth doing. Coverage decided more of our results than any feature did. [the list of countries covered](https://collectnexchange.com/company/supported-countries) publishes its country list.

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This article explains how something works. It is not financial advice.
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