Should you connect your bank account to a budgeting app? Bank sync vs. manual tracking
Where Went · Published · 6 min read
Short answer: In the EU, linking your bank to a budgeting app is generally safe. The app only gets permission to read your account, it can't move money, and you renew the link every 180 days. So the real choice is between effort and attention. Bank sync saves you typing. Entering expenses yourself makes you notice each one, works with cash and any bank, and keeps your statements to yourself. Our take: if you want to spend less, start by hand.
Below: what actually happens when you press "Connect", what the risks are (and aren't), what you gain and lose by typing things in, and a routine that keeps manual tracking going past the first month.
What happens when you connect your bank to a budgeting app?
You give the app permission to read your account through your bank's official interface. EU payment rules (PSD2) call this an account information service. Whoever provides it, the app itself or a company working for it, has to be registered with a financial regulator. It can see your balances and transactions. It can't make payments.
A few things worth knowing before you click "Connect":
- The company on the screen may not be the app. Many budgeting apps don't connect to banks themselves. They use a provider such as Tink or finAPI, and that's who you actually give access to.
- You confirm it like a payment. You log in with your online banking details and approve the request in your banking app or with a code.
- It runs out after 180 days. Since 25 July 2023, EU rules let the connection run for 180 days before you have to confirm it again. Before that, it was 90 days (Delegated Regulation (EU) 2022/2360). If you ignore the reminder, new payments simply stop coming in.
Is it safe to link your bank account?
In the technical sense, mostly yes. When Stiftung Warentest, Germany's consumer testing organisation, looked at eight budgeting apps in October 2023, it found no security flaws, and every app followed the law. Read-only access can't empty your account. The risks that are left are about your data and about the company behind the app.
What to think about instead:
- Your statements say a lot about you. Where you shop, what you earn, how much your rent is, which pharmacy you use. Read the privacy policy and look for what the company does with that data, for example whether it uses it to show you offers.
- Companies change. Mint, one of the best-known budgeting apps in the US, closed in March 2024. Its users were moved to Credit Karma, which didn't have Mint's budgeting tools (CNBC).
- Check who's behind it. The provider's name should appear on the connection screen. Registered providers are listed in the European Banking Authority's register of payment institutions, which covers the whole EU.
What do you gain by entering expenses yourself?
Attention, mostly. In a 2001 study in the Journal of Consumer Research, Dilip Soman found that a payment held people back from the next purchase more when they had to write the amount down themselves, as with a check, and when the money left their account right away (abstract). Typing an expense into an app isn't the same as writing a check. But it works on the same idea: you look at the amount one more time, on purpose.
There's more:
- Cash counts. Bank sync sees a €200 cash withdrawal and nothing after that. When you log by hand, the market, the haircut and the tip each get their own category.
- Categories are right the first time. A synced app sees a line like
PAYPAL *EBAYorAMZN Mktp DEand has to guess. A supermarket that also sells clothes becomes groceries. You fix it later, or the chart stays wrong. - Any bank works. A small local bank, an account abroad, a savings tin at home.
- Nothing to renew. No reminder every 180 days, and nothing breaks when your bank changes its systems.
- Nobody else gets your statements. The app only knows what you type in.
What do you give up?
Time, and some accuracy. If you pay for something three times a day, that's about 90 entries a month. At around 10 seconds each, that adds up to 15 minutes. Forget a few and your totals drift away from your real balance.
Stiftung Warentest put it plainly: apps with a bank connection did better because every payment lands in the app and gets a category by itself, which makes keeping a household budget much easier. That's true. If you know you won't type things in, a linked app beats an empty one.
Bank sync or manual: which should you choose?
| Bank sync | Entering it yourself | |
|---|---|---|
| Daily effort | Almost none, apart from fixing categories | A few seconds per payment |
| Cash | One line per cash withdrawal | Every cash payment, if you log it |
| Categories | Guessed from the merchant name | Chosen by you |
| Banks covered | Only those the provider supports | Any bank or account |
| Renewal in the EU | Confirm again every 180 days | None |
| Who sees your transactions | The app and its connection provider | Only what you type in |
| When you notice spending | Later, in a summary | Right when you log it |
Bank sync suits you if you have several accounts and cards, already know your spending habits and mostly want one overview of everything you own.
Typing it in suits you if you want to spend less, pay a lot in cash, use a bank the app doesn't support, or simply don't want to share your statements.
There's also a middle way. Many banking apps already sort card payments into categories. That uses data your bank has anyway, with no third party involved. It only covers that one bank, though, so cash and your other accounts are missing. Some people use the bank app for a quick look and a manual tracker for the full picture.
How to track expenses by hand without giving up
Manual tracking usually fails the same way. You skip a few days, the backlog grows, and catching up starts to feel like homework. These habits stop that from happening:
- Log it when you pay. At the till, in the car park, on the way out of the shop. By the evening you'll have forgotten half of it.
- Start from today. Enter what each account holds right now. Don't try to type in the last three months.
- Add fixed costs on day one. Rent, phone, subscriptions. Then you know from the start how much is really left for the month.
- Treat cash withdrawals as a transfer. Move the €200 from your current account to a Cash account, then log what you spend from it. If you also log the withdrawal as an expense, you count the same money twice.
- Check once a week. Sunday evening, ten minutes: compare each balance with your banking app. If they don't match, a payment is missing. Find it in the statement and add it.
- Round if it helps. €4.80 can be €5. Close enough is fine.
At the end of the month, look at your spending by category and pick one to bring down next month. Just one.
The bottom line
Linking your bank isn't dangerous, and for some people it's the right call. But if you want a budget app because money keeps disappearing before payday, we think typing each payment in is the part that changes things. That's why we built Where Went without a bank connection: it runs in the browser, it's free, and transfers between your own accounts (like that cash withdrawal) don't count as spending. If you'd rather compare first, here are six free budget apps that don't link to your bank.