In France everyone has to fill a tax return. It will be prefilled with your salaries, but you still need to add deductions (for example house renovations or child care) or special revenues like real estate.

But yeah, if you only have salaries and no deductions you just validate your prefilled return and be done with it.

Western Europe here. I’m old enough that I’ve had to file many paper tax forms. There have always been free services to help with that.

Now you can do it all online, and the known information is pre-filled. The last few years you don’t even have to click “accept” anymore, accepting is automatic if you don’t do anything.

That said, there still are paid services, but their main aim is to find all the ways to reduce what you pay (and they are likely used mainly by the well off).

Australian here. The ATO (australian tax office) has a website you go to. It is pre-filled with various dada, your salary, your bank interest, uni loans, etc.

You add any additional salary, eg gig economy or crypto earnings (lol) and put in your deductions. I deduct heaps because I make money on the side renting out my camper van, and all its expenses are deductable from its earnings, but if you just have one job and thats it, then you can be done with your tax return in 10 mins, for free, online.

You can even preview your expected tax return before you commit. Once you commit, the return lands in your bank acvount usually within a week or so. You even get a receipt showimg what they spent your money on.