Is it permissible to take a loan from the state when there is a 6% tax?

If the aforementioned taxes are usurious interests taken due to debt, then it is not permissible to engage in them except for one who is in a state of necessity. The limit of necessity is when one strongly believes that they will perish, or be afflicted by an unbearable hardship, or be unable to secure the minimum standard of living for the poor. Necessity is determined by its extent, so when the necessity ceases, the matter reverts to absolute prohibition.