The Journal

Notes from the
payment frontline.

Regulation, sovereignty, product and the market — written by the people building NexEuro. No fluff, no ghost-writers.

All articles

Sovereignty

Payment sovereignty is no longer optional

Cloud Act, Visa/Mastercard dependence, fragmentation: why Europe must take back control of its payment infrastructure.

Pierre P.·5 June 2026·11 min
Regulation

PSD3 and FIDA: what fintechs need to anticipate

The third Payment Services Directive and the Financial Data Access regulation are shaping European open finance. A breakdown.

Matea S.·28 May 2026·14 min
Market

Wero, EPI, NexEuro: the European wallet war

An honest comparison between the EPI/Wero banking initiative, NexEuro and the private alternatives. Who will win?

Sacha S.·20 May 2026·12 min
Analysis

The hidden cost of Visa and Mastercard

Beyond interchange, network fees weigh 1.2% to 1.8% on every European transaction. We ran the numbers.

Pierre P.·12 May 2026·9 min
Engineering

Why we build on Rust

Memory safety, performance, async ecosystem: lessons learned after 18 months of Rust in a fintech.

Matea S.·2 May 2026·15 min
Guide

How to send money instantly across Europe in 2026

A complete guide: SEPA Instant, real timings, limits, fees, security and a step-by-step method to transfer money in seconds anywhere in Europe.

Sacha S.·7 August 2026·12 min
Guide

What is a SEPA instant transfer? The reference guide

Definition, technical workings, timings, limits, regulatory framework and differences from a standard transfer: everything you need to understand SEPA Instant.

Matea S.·6 August 2026·14 min
Guide

How to accept QR code payments as a merchant

Setup, equipment, costs, instant settlement, accounting obligations: the practical guide to QR code payments for small businesses and freelancers.

Pierre P.·5 August 2026·11 min
Guide

Visa and Mastercard fees explained: who really pays what

Interchange, scheme fees, acquirer margin: a complete breakdown of the cost of a card payment in Europe and the account-to-account alternatives.

Sacha S.·4 August 2026·13 min
Guide

How to choose a payment solution for your business in Europe

Selection criteria, comparison grid, real costs, PSD2 and GDPR compliance, sovereignty: a method for picking the right acceptance method.

Matea S.·3 August 2026·12 min