How to Launch a Finance App or Wallet: BaaS and Banking Core
Launching a finance app, a wallet, or a neobank is one of the most appealing ideas around right now, but it is also one of the most underestimated. Technology is only one part of it; regulation and banking partners shape the path. This guide walks you through, step by step, what you really need to launch a financial product.
The idea vs. the regulatory reality
Anyone can imagine an app that holds money or issues cards; few realize that to do it legally you need a license (a payment institution, e-money, or banking license) or you have to rely on someone who holds one. The first question is not "what features will the app have", but "how do I legally access the financial infrastructure?".
What is BaaS (Banking as a Service)
BaaS is the answer that has democratized fintech: a provider with a banking license offers you, via API, the regulated building blocks (accounts, cards, payments, IBANs) so you can build your app on top. This lets you launch a financial product without being a bank, in months instead of years, focusing on the experience and the business while the partner provides the license and the core.
Your own core vs. a BaaS partner
Building your own banking core gives you total control but requires a license, regulatory capital, and years of development: it only makes sense at large scale. For the vast majority of new products, relying on a BaaS partner is the realistic route: faster, cheaper, and with compliance covered in the regulated layer. Many successful neobanks started exactly this way.
The steps to launch
- Define the product and validate demand with real users.
- Choose the regulatory model: your own license or a BaaS partner.
- Design onboarding with KYC/AML from the very start.
- Build an MVP around one core financial function.
- Integrate payments, cards, and accounts via the partner's APIs.
- Launch, measure, and expand features based on real feedback.
Licenses and partners
Choosing the right BaaS partner is as important as the technology: it determines what you can offer, in which countries, at what cost, and with what reliability. It is worth comparing geographic coverage, available products (cards, IBANs, payments), pricing model, and the provider's soundness before committing, because switching partners later is complex.
Start with an MVP
As with any product, do not try to launch the definitive neobank on day one. An account with a card and a few well-built features validates the idea and the regulatory model before you invest in the big version. From there, you expand using real usage data.
Mistakes that sink a fintech
- Underestimating regulation and leaving it until the end of the project.
- Trying to build your own banking core without the scale that justifies it.
- Neglecting KYC onboarding: too much friction scares users away, too little breaks the rules.
- Launching too many features before validating the basic proposition.
- Picking the wrong BaaS partner and ending up limited in countries, products, or cost.
Almost all of these mistakes are avoided the same way: understand the regulatory framework early, lean on the right partners, and start small with an MVP focused on one specific financial function.
At AxiomTech we build finance apps and wallets on top of BaaS, with KYC/AML, payments, and bank-grade security, and we advise you on the regulatory model. Explore our fintech solutions and start with a solid MVP.