The Tax Policy Center released a new paper today that should be sufficient for scaring the living daylights out of anyone that doesn't like the idea of taxes going up.
The paper's abstract states:
Almost 90 percent of Americans would see their taxes rise if we topple off the cliff. For most households, the two biggest increases would be the expiration of the temporary cut in Social Security taxes and the expiration of the 2001/2003 tax cuts.
Here's a table that's more helpful for those you visual types:
Its expiration means less income in families’ pocketbooks — the tax increase would be about $95 billion in 2013 alone — at a time when the economy is little better than it was when the White House reached a deal on the tax break last year. Independent analysts say that the expiration of the tax cut could shave as much as a percentage point off economic output in 2013, and cost the economy as many as one million jobs.
If Congress Goes Over the Fiscal Cliff Your Taxes Will Likely Go Up [TaxVox]