It's unlikely the employer would pay you more. You negotiated and expect 10,000 SEK. Yes, the employer knows it'll cost 13,000, but you only get 10,000. So if there's no employer tax, you'll still likely get 10,000, but now the employer can hire another person using the money that's freed up, or invest in some other ways.

That looks right.

It's a completely different tax, if the employer didn't have to pay that to the government you'd have to renegotiate your salary to get any of it (because it's not part of your salary).

But in Sweden you do negotiate the 10,000 SEK. You generally don't talk about the 13,100 unless you are an employer and have to think about it. That is my point and that is what I think is stupid.

What is called "employment tax" in the thread above, partly is a kind of insurance premium. For example, of the close to 32% that are added on top of the "salary you see", 11% goes to pension, 5% pays mandatory sickness insurance, 2,6% pays for maternity / paternity leave privileges. That gives you kind of sense "what you get for your taxes in Sweden".

The 30% that everyone pays of their salary goes for services in their local municipality: schools, child care, care for the elderly, hospitals, roads, local infrastructure such as water, drains etc,, and also subsidies for commuter traffic.

The approx 20 % that are added on top for some, together with the 25% sales tax is taken by the government, and goes into the national budget.