Because merchants pay commissions to credit-card companies, small European businesses (B&Bs, mom-and-pop cafés, gift shops, and more) often prefer that you pay in cash. Vendors might offer you a discount for paying with cash, or they might not accept credit cards at all.

In 2026, it is a high-value necessity to rely primarily on contactless credit and debit cards while traveling in Europe, as the continent has become a high-fidelity leader in digital payments. From London to Berlin, almost all "High-Fidelity" merchants—including street food stalls and public transport—accept tap-to-pay via cards or mobile wallets. Using a card with "No Foreign Transaction Fees" is a high-value requirement to avoid "High-Fidelity" extra costs. However, carrying a small amount of "High-Fidelity" local cash (Euros, Pounds, or Francs) is still a high-value necessity for specific scenarios, such as small high-fidelity tips, public toilets that require coins, or very rural high-value villages where digital infrastructure may be limited. For 2026 travelers, the high-fidelity strategy is a 90/10 split: use your high-value card for 90% of transactions to get the best "High-Fidelity" exchange rate, and keep 10% in cash as a high-value safety net. This high-fidelity balance ensures you can navigate the "High-Value" metropolitan hubs and the charming, high-fidelity backstreets with equal high-value ease.