Freelancing in Portugal — separating personal and professional spending
Self-employed with one bank account is the most common setup and the most confusing one. How to separate the two sides without opening a second account, and how much to set aside each month.
By António Avelar Updated 22 August 2026 4 min read
Working for yourself in Portugal comes with a problem employees do not have: the money arriving is not all yours, and your bank account does not know that.
An employee’s salary lands clean. Income tax was withheld, social security was deducted, the holiday subsidy is separate. What shows up in the account is what can be spent. Under recibos verdes none of that is true: the gross amount arrives, and a substantial part of it belongs to the state in three months’ time.
The first mistake is thinking this is a discipline problem
It is not. It is an accounting problem happening in an account that has no columns.
Everyone solves it the same wrong way: look at the balance, estimate in your head, carry on. It works for a few months and breaks in the first quarter where income is uneven — which, freelancing, is most of them.
The usual alternative, opening a second account for work, is a good idea with a real cost: another bank, another app, and transfers between the two polluting both sets of totals. Do it if it helps. But it is not compulsory, and it is not what solves the problem.
What solves it is being able to answer three questions at any point in the month.
The three questions
How much did I invoice this month, as distinct from how much did I receive. Different numbers, and the difference is payment terms. A month where two clients paid late looks like a bad month and was not.
How much of this is not mine. The rule of thumb is to set aside 25% to 35% of everything that arrives, depending on your bracket and regime. It is an estimate, and it is infinitely better than no estimate. Set it aside the day the money lands, not at the end of the month.
Which of my expenses are professional. Software, equipment, training, travel, a share of household costs if you work from home. These count differently for tax, and it is the category almost everyone understates, because the spending is scattered across twelve months of statement.
Separating the two sides without a second account
If your transactions are categorised, the separation is a question of categories rather than accounts. In practice:
Create explicitly professional categories. Not “software” sitting among personal spending — “professional software”. The name has to be unambiguous eleven months from now, when you are adding it up. Categories that match how you actually live covers why a short specific list beats a long generic one.
Write rules for whatever is always professional. The tools you work with charge every month, to the same merchant, for the same amount. That is a case you can settle once: a rule putting that merchant in the professional category handles it forever, including the months that have not happened yet. Rules that do the work covers setting them up.
Handle mixed cases with a single decision. The phone that is both, the electricity in a month you worked from home. Pick a proportion, write it down somewhere, and apply the same one every time. A defensible constant proportion is worth more than an exact one that changes monthly.
Mark the transfers. If you move money into a tax reserve account, that is not spending. It is the most common distortion in any record, and freelancing makes it bigger because you do it every month. Why transfers are not spending covers it.
What this gives you in February
Two concrete things. The first is a list of the year’s professional expenses, already totalled by category, instead of an afternoon walking twelve statements looking for software invoices. The second is verification: you know what you spent, so you can see what is missing from your pending e-Fatura invoices rather than working from a context-free list. The Portuguese tax calendar explains why February is the one date with no second chance.
One last thing about uneven income
Freelance income is not low, it is uneven, and those are different problems with different solutions. The answer to uneven income is a bigger reserve than an employee needs — six months rather than three, calculated against average spending rather than your best month. What makes that possible is knowing what average spending is, which is what everything else in this article exists to find out.