Is it safe to connect a budgeting app to your bank?

Short answer: yes, if the app connects through PSD2, the EU’s open-banking rules. Under PSD2, a budgeting app never sees your bank password. It gets read-only access that you approve at your own bank, and it cannot move your money. The connection runs through providers that are licensed and supervised by financial regulators. That is true for any app built this way, not just ours. The real question is not whether bank connections can be safe. It is whether the specific app in front of you does it properly.

We hear this question more than any other at Bilance, a budgeting app made for European banks that does the connecting and the categorising automatically. So here is the honest, general answer.

What actually happens when you connect

With a PSD2 connection, “giving an app access to your bank” works like this:

1. You pick your bank inside the app.
2. The app sends you to your own bank’s login (its app or website). Your credentials go to your bank, and only to your bank.
3. Your bank asks you to approve read-only access to the accounts you choose.
4. Your bank issues the app a limited-time token — a permission slip, not a key.

The app can then read transactions and balances on the accounts you approved. Nothing more.

What can and cannot go wrong

By design, the access cannot do these things:

• It cannot move or spend your money. Reading account data and making payments are two separate permission types under PSD2, and one can never turn into the other.
• It cannot expose your bank password, because the app never had it.
• It cannot reach accounts you did not approve.
• It does not run forever. The access lapses unless you confirm it again when your bank asks.

What can go wrong is the same as with any online service: the company holding your transaction data could protect it badly, or use it in ways you would not like. Read-only access sharply limits what a compromised connection could do, but the provider, the access token, and the company storing your data still need proper security. Much of it comes down to who the company is and how it makes money, which is what the checklist below is for.

One warning sign to know: some apps outside the PSD2 framework ask you to type your actual bank password into the app so it can log in as you. That is the old, worse model. If an app asks for your bank password directly instead of sending you to your bank, do not use that app.

What to check in any budgeting app

1. Does it use PSD2 open banking? You should be redirected to your own bank to approve access, never asked for your bank password.
2. Is the access read-only? Your bank’s approval screen tells you exactly what you are granting. It should be account information only.
3. Who is the regulated provider? A serious app names the licensed providers it connects through; check the privacy policy. Bilance’s are named in ours, and how the licensing and supervision work is explained in PSD2 in plain words.
4. How does the app make money? If you are not paying, your data may be the product. A clearly explained business model is a good sign. A subscription avoids some ad and commission incentives, but still check the privacy and security practices.
5. Can you leave cleanly? Look for a plain statement of what happens when you delete your account, and how long backups are kept.

How Bilance answers those questions

For transparency, our own answers: Bilance connects through PSD2 to 2,300+ banks across Europe (see yours), read-only, through regulated providers named in our privacy policy. We make money from subscriptions, not from your data — no selling, no ads. Deleting your account erases your data; backups are kept 7 days for data integrity, then permanently deleted. The full detail is on our security page, and the step-by-step mechanics are in how bank sync works.

Whichever app you choose: connecting a bank through PSD2 is not the risky part. Trusting a company that cannot answer the five questions above clearly — that is the risky part.