Christian nationalist Doug Wilson wants tax rates to be determined by the Bible: "I would like Divine Law to have something to say about the marginal tax rates ... because when the state claims a tithe, they're claiming equality with God."

Somebody needs to read their Bible.

Then they sent to Him some of the Pharisees and the Herodians, to catch Him in His words. When they had come, they said to Him, “Teacher, we know that You are true, and care about no one; for You do not regard the person of men, but teach the way of God in truth. Is it lawful to pay taxes to Caesar, or not? Shall we pay, or shall we not pay?” But He, knowing their hypocrisy, said to them, “Why do you test Me? Bring Me a denarius that I may see it.” So they brought it. And He said to them, “Whose image and inscription is this?” They said to Him, “Caesar’s.” And Jesus answered and said to them, “Render to Caesar the things that are Caesar’s, and to God the things that are God’s.”

Mark 12:13-16 (NKJV). There are other passages about submitting to earthly governments as well where they do not contravene the law of God.