What is the US federal tax rate?

For the tax year 2010 at this time July 22 2010 8:25 pm the federal income tax rate from the 1040 federal income tax return THE TAXABLE INCOME from page 2 line 43 starts at 10% and goes to the maximum tax bracket amount of 35 %.

Go to the IRS gov website and use the search box for 1040ES go to page 8
The 2009 federal tax rate schedules can be found in the 2009 Form 1040ES instructions, in the Related Link below.