The verdict in three sentences
Showing the price in the buyer's currency lifts conversion by 9 to 22 %, especially for a diaspora that thinks in euros or dollars. But dynamic currency conversion at checkout (DCC) applies an FX spread of 1.5 to 4 % that erodes your margin if nobody planned for it. The right architecture displays two stable prices (FCFA + EUR) and settles in a single settlement currency, avoiding the surprises that drive 18 to 30 % last-page abandonment.
Three ways to display the price
A merchant selling to both Lagos and London has three strategies. Fixed dual display shows local currency and GBP/EUR side by side with a rate frozen and refreshed weekly: simple and predictable, but the rate can drift from market. Geo-based auto-switch detects the country (IP or account) and shows one currency: very smooth, but risky if detection is wrong. Pure DCC lets the provider convert in real time at the payment page: maximum displayed conversion, but an opaque spread borne by someone.
| Strategy | Conversion uplift | FX spread borne | Who pays the FX | Main risk |
|---|---|---|---|---|
| Fixed dual display (local + EUR) | +9 to +13 % | 0 % (merchant rate) | Merchant (rate drift) | Frozen rate vs market |
| Geo auto-switch (1 currency) | +14 to +18 % | 1.5 to 2.5 % | Shared | Wrong country detection |
| DCC at checkout | +18 to +22 % | 3 to 4 % | Buyer (often) | Opaque spread, disputes |
| Local-only price | baseline | 0 % | Buyer (via their bank) | Diaspora psychological friction |
The hidden cost: settlement and mismatch fees
Displaying in EUR is one thing; being paid and settled is another. If you charge in EUR but your settlement account is in local currency, the provider applies a conversion fee of 1 to 2 % at payout. This double conversion (at display then at settlement) can stack to 5 to 6 % of loss on a diaspora order, wiping out margin on small baskets.
| Line item | 2026 order of magnitude | Impact on 100,000 (local) |
|---|---|---|
| DCC display spread | 3 to 4 % | 3,000 to 4,000 |
| Cross-currency settlement fee | 1 to 2 % | 1,000 to 2,000 |
| Payment provider commission | 1.5 to 3.5 % | 1,500 to 3,500 |
| Lost psychological rounding | 0.5 to 1 % | 500 to 1,000 |
| Total red zone | up to 10.5 % | up to 10,500 |
Psychological rounding matters: showing £29.90 rather than a raw-converted £29.74 reassures and converts better, but freezes a micro-gap you must absorb on margin.
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Mini case study
Grace runs a fashion boutique in Accra and sells an outfit for GHS 620 (about €39). 40 % of her orders come from the diaspora in the UK. Before, she only displayed in cedi: diaspora conversion of 2.1 % and 26 % checkout abandonment. She switches to fixed dual display GHS + GBP with cedi settlement. Result: diaspora conversion rises to 2.6 % (+24 % relative), abandonment down to 17 %. On 300 diaspora sessions/month she gains roughly 1.5 extra orders, close to GHS 930 of monthly revenue — for a controlled 1.5 % settlement spread, about GHS 9 per order. The net calculation stays firmly positive.
FAQ
Does DCC really boost conversion? Yes, displaying in the buyer's local currency adds +18 to +22 % conversion versus a local-only price for the diaspora. But part of that gain is taken back by the 3 to 4 % spread.
Who bears the FX spread? It depends on the setup: in pure DCC it is often the buyer via a less favorable rate; in fixed dual display it is the merchant absorbing rate drift, estimated at 1 to 2 % per quarter if the rate is not refreshed.
Why so many abandonments when the currency changes at checkout? A price surprise on the last page triggers 18 to 30 % abandonment. A buyer who saw £39 and is charged £41 loses trust. Show the final price from the product page.
Do I need an EUR/GBP settlement account? If more than 30 % of your volume is diaspora, a foreign-currency settlement account avoids the 1 to 2 % mismatch fee and pays for itself quickly. Below that, dual display is enough.
How often should I refresh a fixed rate? At least weekly, or whenever the gap to market exceeds 2 %, so you never sell at a loss on foreign-currency orders.
Let's talk about your project. We set up a multi-currency checkout that converts without eating your margin. WhatsApp +221 77 596 93 33.
Mohamed Bah
Fondateur, Kolonell
Passionate about digital and entrepreneurship in Africa, Mohamed has been helping Sénégalese businesses with their digital transformation since 2020. Founder of Kolonell, he believes every SME deserves a professional and accessible online présence.
