Currency Exchange Rates in PrestaShop: Why They Differ Between Countries and Why You Should Use Local Central Bank Rates

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You sell in EUR. A customer in Poland sees the price in PLN. A customer in Czechia sees it in CZK. Same product, same moment, but the price is different - not because you changed it, but because the exchange rate is different.

Why? Because there is no single "universal" exchange rate. Every country's central bank publishes its own reference rates, calculated at different times, against different base currencies, using different methodologies.

If you run a multi-currency PrestaShop store and you're still updating rates manually (or worse, using one global rate for everyone), you're leaving money on the table - or losing customers who see prices that don't match what they expect.

This article explains why exchange rates differ between countries, why using the rate published by the central bank of the customer's country matters, and how MyPresta's family of currency rate modules (over 20 integrations, one per country) solves this.

Why Exchange Rates Differ Between Countries

It's not a conspiracy. It's just how currency markets work.

1. Different Base Currencies

Every central bank publishes rates against its own base currency. The European Central Bank (ECB) uses EUR. The National Bank of Poland (NBP) uses PLN. The Czech National Bank (CNB) uses CZK. The Swiss National Bank (SNB) uses CHF.

When you convert EUR to PLN using the ECB rate, you get one number. When you convert using the NBP rate, you get a slightly different number. Why? Because each bank calculates its rate at a different time of day, using different market data.

2. Different Publication Times

The ECB publishes rates around 16:00 CET. The NBP publishes around 12:00 CET. The Czech National Bank publishes at a different time. If the market moved between those publications, the rates differ.

A customer in Poland checking your store at 14:00 sees the NBP rate from 12:00. A customer in Germany checking at the same moment sees the ECB rate from the previous day (since ECB publishes at 16:00). Same product, different price basis.

3. Different Methodologies

Some banks publish "average" rates (like NBP). Others publish "reference" rates (like ECB). Some use mid-market rates, others use bid-ask spreads. The methodology affects the final number.

4. Local Market Conditions

In some countries, the central bank intervenes in the currency market. In others, the rate floats freely. Local political or economic events can cause a country's currency to move differently from the global trend.

Bottom line: there is no single "correct" exchange rate. There is only the rate that makes sense for the market you're selling to.

Why Use the Rate From the Customer's Country?

Here's the thing: your customer doesn't care about the ECB rate. They care about what their bank will charge them when they pay.

If a Polish customer sees a price in PLN calculated with the ECB rate, but their bank uses the NBP rate, there's a mismatch. Sometimes small. Sometimes not. Either way, it creates friction.

1. Trust and Transparency

When the price in local currency matches what the customer expects (based on their bank's rate), they trust the store more. When it doesn't, they wonder why.

2. Accounting and Compliance

In some countries, tax authorities and accountants expect prices to be based on the local central bank's official rate. Using a foreign rate can create accounting headaches.

3. Competitive Pricing

If your competitor uses the local central bank rate and you use a global rate, your prices might look higher (or lower) than expected. That affects conversion.

4. Reduced Support Tickets

"Why is the price in PLN different from what my bank shows?" - this is a real support ticket. Using the local rate reduces these questions.

The Problem With Manual Updates

You could, in theory, update exchange rates manually every day. Log into each central bank's website. Copy the rate. Paste it into PrestaShop. Repeat for every currency.

That's:

  • Time-consuming (30 minutes a day, minimum).
  • Error-prone (one wrong digit = wrong prices across the store).
  • Not scalable (what if you sell in 10 currencies?).
  • Easy to forget (weekends, holidays, busy days).

Automating this is not a luxury. It's a necessity for any store selling in multiple currencies.

MyPresta's Currency Rate Modules: One Per Country

MyPresta.eu offers over 20 currency rate update modules, each connected to the official central bank of a specific country. Not one generic converter - a dedicated integration per market.

Here's the full list, country by country:

1. European Central Bank (ECB) - EUR

ECB Currency Rates Module - fetches rates directly from the ECB. Ideal for stores selling across the Eurozone. Supports cron automation and per-currency margins.

2. National Bank of Poland (NBP) - PLN

NBP Currency Rates Module - pulls daily average rates from the National Bank of Poland. Perfect for Polish shops and PLN-centric pricing.

3. Czech National Bank (CNB) - CZK

CNB Currency Rates Module - integrates with the Czech National Bank's official rate table. For stores selling to Czech customers.

4. National Bank of Romania (BNR) - RON

BNR Currency Rates Module - connects to the National Bank of Romania. For Romanian market pricing.

5. National Bank of Hungary (MNB) - HUF

MNB Currency Rates Module - fetches official rates from the Hungarian National Bank. For HUF-based pricing.

6. Bank of Spain (BdE) - EUR

BdE Currency Rates Module - integrates with Banco de España. For Spanish market transparency.

7. Bank of Italy (Banca d'Italia) - EUR

Banca d'Italia Currency Rates Module - connects to the Bank of Italy's official EUR rates. For Italian market pricing.

8. National Bank of Slovakia (NBS) - EUR

NBS Currency Rates Module - integrates with the National Bank of Slovakia. For Slovak market pricing.

9. Danmarks Nationalbank - DKK

Danmarks Nationalbank Currency Rates Module - fetches rates from Denmark's central bank. For DKK-based pricing.

10. Norges Bank - NOK

Norges Bank Currency Rates Module - connects to Norway's central bank. For NOK-based pricing with cross-rate triangulation.

11. Swiss National Bank (SNB) - CHF

SNB Currency Rates Module - integrates with the Swiss National Bank. For CHF-based pricing.

12. Bank of Canada (BOC) - CAD

Bank of Canada Currency Rates Module - fetches rates from the Bank of Canada. For CAD-based pricing.

13. Central Bank of the Republic of Turkey (TCMB) - TRY

TCMB Currency Rates Module - integrates with Turkey's central bank. For TRY-based pricing.

14. Central Bank of Russia (CBR) - RUB

CBR Currency Rates Module - connects to the Central Bank of Russia. For RUB-based pricing.

15. National Bank of Ukraine (NBU) - UAH

NBU Currency Rates Module - integrates with the National Bank of Ukraine. For UAH-based pricing.

16. National Bank of the Republic of Belarus (NBRB) - BYN

NBRB Currency Rates Module - connects to Belarus's central bank. For BYN-based pricing with legal compliance.

17. Bank of Latvia (Latvijas Banka) - EUR

Latvijas Banka Currency Rates Module - integrates with the Bank of Latvia. For Latvian market pricing.

18. Bank of Israel - ILS

Bank of Israel Currency Rates Module - fetches rates from the Bank of Israel. For ILS-based pricing.

19-20+. More Countries

The full collection includes integrations for additional countries and central banks. Check the complete exchange rates tag page for the current list.

What All These Modules Have in Common

Regardless of which country you choose, the modules share a common DNA:

  • Official central bank data - no third-party aggregators, no unreliable sources.
  • Cron automation - rates update automatically, no manual work.
  • Manual update trigger - if you need to force an update, you can.
  • Per-currency margins - add a percentage markup or markdown to each rate.
  • Cross-rate triangulation - your store's base currency doesn't have to match the bank's pivot.
  • PrestaShop 1.6-9.x compatibility - works across modern PrestaShop versions.
  • Perpetual license - buy once, use forever.

Why This Matters for Your Store

Using the right exchange rate isn't just about "being accurate". It's about:

  • Trust - customers see prices that match their expectations.
  • Compliance - accounting and tax requirements are met.
  • Competitiveness - your prices look right compared to local competitors.
  • Efficiency - no manual updates, no errors, no forgotten weekends.
  • Scalability - add more currencies without adding more work.

If you're selling internationally and still updating rates by hand, you're wasting time and risking errors. Automate it. Use the official rate from the customer's country. Watch your conversion improve.

Where to Find All the Modules

The complete collection of currency rate update modules is available on the exchange rates tag page. Over 20 modules, one per country, each connected to an official central bank.

Pick the one that matches your target market. Install it. Set up cron. Done.

Your prices will always be based on the rate your customers recognize. Your accountants will thank you. Your support team will have fewer tickets. And you'll have more time to focus on what actually grows the business.

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