Tax deductions for the rich could pay off 100 PERCENT of the deficit.
Based on research by the Tax Policy Center, tax deferrals and deductions and other forms of tax expenditures (tax subsidies from special deductions, exemptions, exclusions, credits, capital gains, and loopholes), which largely benefit the rich, are worth about 7.4% of the GDP, or about $1.1 trillion.
Other sources have estimated that about two-thirds of the annual $850 billion in tax expenditures goes to the top quintile of taxpayers.