1, If adjusted gross income is high enough, large amounts of business expense deductions will be lost under this 2 percent formula.

2, The Bidens reported adjusted gross income of $ 333, 182 last year.

3, Adjusted gross income: A subtotal in an individual's tax return computed by deducting from gross income any business-related expenses and other deductions ...

4, Separate filing may benefit such couples because the adjusted gross income "floors" for taking the listed deductions will be computed separately.

5, The first family's adjusted gross income for 2010 was $1.728 million. Their taxable income after deductions was $1.34 million.

6, The president and first lady donated adjusted gross income - - to 37 different charities.

7, Mr. Buffett's adjusted gross income was $62, 855, 038 in 2010, according to the letter, while his taxable income was $39, 814, 784.

8, The full deduction would be available for couples filing jointly with adjusted gross incomes of up to $ 100, 000.

9, The Bidens donated $ 1, 885 to charity, or about 0.7 percent of their adjusted gross income.

10, If you've already paid for medical expenses this year totaling 7.5 percent of your adjusted gross income,[http:///adjusted gross income.html] you can deduct any medical costs over that amount.

11, The President and First Lady also reported donating $245,075 – or about 14.2% of their adjusted gross income – to 36 different charities.

12, In a letter to Republican Rep. Tim Huelskamp Tuesday, Buffett revealed that his adjusted gross income last year was $62, 855, 038 and that his taxable income was $39, 814, 784.

13, Exemptions are fixed amounts per family member. Exemptions are subtracted from adjusted gross income (AGI) and phased out at high-income levels.

14, Paying professional dues, getting certified, going to conferences and other job-related expenses are tax deductible after you've passed a certain threshold — two percent of your adjusted gross income.

15, One possibility for the gap is that he made large charitable contributions, itemized deductions that are subtracted from adjusted gross income.

16, The biggest mystery is the nearly $23 million gap between Mr. Buffett's adjusted gross income and his taxable income.

17, He and the First Lady filed their income tax return jointly and reported an adjusted gross income of $1, 728, 096.

18, In all, the Obamas paid 26 percent of their adjusted gross income in federal income taxes. The Bidens paid 23 percent.