Using Revolut next to your main bank
Most people end up with a digital bank beside the one their salary arrives in. It works well, and it quietly breaks every spending figure either app can show you.
By António Avelar Updated 18 August 2026 4 min read
The arrangement is now close to standard. The salary arrives at a Portuguese retail bank — Caixa, Millennium, Novo Banco, whichever one was nearest when you started working. The day-to-day card spending happens on Revolut, or N26, or Wise, because the rates were better and the app is nicer.
It is a sensible arrangement. It also makes both apps’ spending figures wrong, in a specific and predictable way that is worth understanding before you conclude that either of them is broken.
What the top-up does to the numbers
Every month you move some money from the main account to the digital one. Say €700.
From the main bank’s point of view, €700 left. It has no idea where it went or what happened next, so its spending breakdown records €700 of outgoings, probably filed under transfers or simply uncategorised. From the digital bank’s point of view, €700 arrived. It looks like income.
Now look at what each app can tell you. The main bank shows your salary and a large mysterious outflow, with almost none of your actual spending, because your actual spending happened elsewhere. The digital bank shows all your spending and an income of €700 a month, which is not your income. Neither app is malfunctioning. Each is describing its own half of a life that spans two banks.
The compounding problem is that if you add the two together naively, you double-count: the €700 appears once as spending at the main bank and again as whatever you bought with it at the digital one. Transfers between your own accounts are not spending goes through the arithmetic, and it is the single most common reason people conclude a finance tool is producing nonsense.
The parts that live in different places
Beyond the top-up, the split scatters things that belong together:
Subscriptions end up on both cards. The ones you set up years ago sit on the main bank’s card; the ones you set up recently sit on the digital one. Neither list is complete, which is exactly how a subscription survives unnoticed — see finding the subscriptions you forgot.
Fixed costs stay at the main bank. Rent, utilities, the mortgage, insurance — direct debits mostly stayed where the salary is. So the main bank sees your obligations and the digital bank sees your life, and the fixed-versus-variable split is invisible from either side.
Foreign currency lands on the digital card. Which is why it is there. It also means holiday and online spending is systematically in the account that has the least context about the rest of your money.
Savings drift somewhere third. A savings account, a term deposit, Certificados de Aforro. None of it visible from either app.
Getting one picture back
There is no arrangement of accounts that fixes this. Splitting your money across banks is the right call for good reasons — better rates, better cards, not having everything in one institution — and the answer is not to consolidate back into one bank you like less.
What is required is something that reads both, recognises that the €700 leaving one account and the €700 arriving in the other are the same event, and counts it once. That is what an aggregator does, and it is essentially the only reason to want one: seeing all your accounts in one place covers what setting it up involves.
Two things worth checking on whatever you use. First, that the top-up is genuinely being paired rather than merely hidden — a tool that drops all transfers will also drop a real payment to someone else that happens to look like one. Second, that both institutions are supported by name before you commit to anything.
The smaller point underneath
It is worth noticing what happened here. Nobody made a mistake. Each bank shows an accurate, well-designed summary of the account it holds, and the combination of two accurate summaries is a misleading picture.
That is generally true of money split across institutions, and it gets more true the more accounts you accumulate. The figure you actually want — what you spent, in total, on everything — is not held by anyone. It has to be assembled.