There are many ways a tax can be unethical. It may finance torture, invasion, and fomenting coups in undeveloped nations that lead to widespread suffering. For example.

That is not an ethical problem with the tax, but with the choices made by leadership on policies and budgets.

Sure it is. Taxes can be levied for very specific purposes. Even ignoring that category of taxes, if you find that a whole country is operating immorally, then funding that company is immoral.

To reply to a comment I can't reply to: spdy 7 minutes ago

But this is not the context we are talking about here. Spain is part of the EU and the so called "1st" world.

I'm not sure if you're being tongue in cheek or not, but the 1st world may have less repression and human rights violations but it doesn't have none. And member states have invaded other countries in recent memory, have been involved in torture, institutional racism, etc.

FYI: you can reply to any comment by clicking on the n [minutes/hours/days] ago link.

You can't willingly start a business in a country that finances torture and invasion, make yourself money, and then turn around and say you won't pay tax because the country is unethical. That will be hypocrisy of highest magnitude.

But this is not the context we are talking about here. Spain is part of the EU and the so called "1st" world.

"Taxation without representation."

If you have the friends that companies like Google do, then I don't think you have any problems with representation.

Taxation without representation has not been an issue in America since 1776. Unless you're referring to multinationals lacking direct representation in foreign legislatures. At which point, it's fair to both consider that as a reasonable consequence of choosing to engage in business in other national jurisdictions, and to admit they undoubtedly have indirect representation.