Libertarians are not a monolith.

Libertarian is a political label. Rothbard took the label "libertarian" from socialist anarchists. American libertarians are antiauthoritarian (and to varying degrees anti-statist) capitalist liberals. Most of the world would call us liberal. We are skeptical of all concentrated power. All power should be decentralized democratically to the individuals of a population.

You could be a center-right (on the left in the US) libertarian that believes that taxes are necessary to give a modern fiat currency value and that economic regulation is crucial for a well-functioning competitive free market, but you are extremely antiauthoritarian and against all concentration of power. You need taxes to shrink the money supply down after the Congress spends money into existence. If you remove taxes now, then the currency will inflate over time into oblivion.

I believe that fees are better than taxes and that taxes on things on land value, energy, and radio spectrum are fine. I believe in social democracy that is for the most part outside of the state through taxpayer (and later fee payer) funded chartered non-profit organizations. All power (economic and political) should be decentralized as much as possible. Concentration of power (political or economic) should never be trusted and be heavily regulated against.