labken -- I do realize from your other postings that you are anti-Ron Paul, so not sure if you made your conclusion before finding out the answers to questions like the one you are asking here.
Anyway, Ron Paul's tax plan is not just excise taxes. It's that AND user fees.
User fees, examples:
1. The Federal tax on gas is how the government pays for roads (R.Paul pointed out that this is abused, they collect more than what is needed for roads, and use the excess for other unrelated things.)
2. Passport fees - you pay a fee for the application and beaurocracy
3. Stamps - pay to run the post office / mail service
4. Federal fees on your airline tickets: pay for air traffic control ..
All these are just a few examples of user fees that are currently in effect.
Then excise taxes cover general expenses not covered by user fees.
The overall effect was quoted in a few interviews.
Income tax represents 40% of all federal revenues currently collected. Ron Paul plans to eliminate this entirely.
Federal revenue drops 40%
Federal spending is cut 50% (Ron Paul recommends cutting it in half)
Spending will be cut more than taxes, closing out the deficit.
Now people may disagree with this: if you are a socialist and want large govt. programs, you should not vote for Ron Paul. Also, if you believe we should have large military campaigns, you should vote for somebody else.
But his economic policy does not advocate any kind of deficit, or any type of unsound scam to make people feel good. There is nothing vague about what he wants to do, if you simply research the details.
It is very close-minded to think that governments cannot exist with taxing income. Many states in the US have no income tax: e.g. Nevada (last I heard they were booming), NH, WY, Alaska, Florida, Texas, South Dakota, Tennessee, Washington ... and prior to 1913, income tax was not even part of the US Constitution.