"Paying for government with an excise tax on demand deposit (M1) account transactions at U.S. financial institutions only takes an account number and transaction amount for compliance and enforcement. For progressivity, those who don't pay income taxes now could legally avoid any tax by using cash or barter.
IIRC, a 3% M1 transaction tax would easily balance the budget while providing a permanent tax cut amounting to hundreds of billions of dollars because virtually all compliance and enforcement costs would be eliminated."
-- I've never heard of this plan. Link???
This was the closest I could find to a tax code that doesn't require individuals or businesses to provide information to the government.
http://users.ixpres.com/~concepts/