In a market-capitalist economy or any economy that uses markets and money as a medium of exchange, there are going to be taxes. How much is too much? That depends on what the government does for its citizens as far as providing protection, through its military, law enforcement services, fire department, courts, public schools and libraries, education, universal healthcare, roads, bridges, and a host of other "public goods" (
municipal or government-run utilities and public transit, water, gas, sanitation, telecom..etc at low prices). If the people of that country are satisfied with their government's performance then they'll be willing to pay their taxes, even taxes considered a bit high.
In the US we pay taxes to the federal government and sometimes, depending on which state we live in, we pay state taxes and even local, city, or county taxes
(property taxes, even local income taxes as well), plus a sales tax for most products and services. We're being taxed to the hilt but our government doesn't deliver much as far as public goods. Here's an interesting video comparing how much money Americans spend in taxes for basic services that generally other modern industrialized nations provide their citizens free of charge at the point of service. We think we're paying less than people living in Scandinavia and the UK, but we unfortunately actually spend more than Swedes, Norwegians, and Brits:
Mixed economies
(Capitalist market economies with some socialism), provide the highest standard of living to their citizens. Too much capitalism and you end up in an oligarchal plutocracy, where the wealthy rule and purchase government policy to serve their vested interests at the expense of the working class
(i.e. Those who need to sell their labor power for a wage to a capitalist to live). Unfortunately, that's the system we're living under now. Oligarchal plutocracy, and due to advanced automation and artificial intelligence, we're heading to techno-feudalism. We need to wake up as a nation and take the reins of our government and economy.