From www.irs.gov: Tax Tip 2012-58
If you make a mistake on your tax return, it can take longer to process, which in turn, may delay your refund. Here are eight common errors to avoid .
1. Incorrect or missing Social Security numbers:
When entering SSNs for anyone listed on your tax return, be sure to enter them exactly as they appear on the Social Security cards.
2. Incorrect or misspelling of dependent’s last name:
When entering a dependent’s last name on your tax return, make sure to enter it exactly as it …