Some key numbers you'll need to know for filing your taxes in 2011:
Each personal or dependent exemption is worth $3,650.
$11,400 for married couples filing a joint return, and qualifying widows and widowers.
$5,700 for singles and married individuals filing separate returns.
$8,400 for heads of household.
Taxpayers who are 65 or older or who are blind may be eligible for a higher standard deduction.
Earned income tax credit:
To qualify, income can be no greater than:
$43,352 ($48,362 married filing jointly) with three or more qualifying children.
$40,363 ($45,373 married filing jointly) with two qualifying children.
$35,535 ($40,545 married filing jointly) with one qualifying child.
$13,460 ($18,470 married filing jointly) with no qualifying children.
Alternative minimum tax threshold:
$72,450 for a married couple filing a joint return, and qualifying widows and widowers.
$47,450 for singles and heads of household.
$36,225 for married individuals filing separately.
Income tax brackets:
10 percent, 15 percent, 25 percent, 28 percent, 33 percent, 35 percent.
Maximum EIT credit:
$5,666 with three or more qualifying children.
$5,036 with two qualifying children.
$3,050 with one qualifying child.
$457 with no qualifying children.
0 percent if taxed in the 10 percent or 15 percent brackets.
Top rate of 15 percent if taxed in higher brackets.
-- Associated Press