• Overstating charitable contributions. If you contributed to charities throughout the year, keep your receipts so you can calculate exactly how much you donated.
  • Incorrectly deducting mortgage points. "Points" are charges that you may have paid in the process of getting a home mortgage. Visit www.IRS.gov to see if you qualify for a deduction.
  • Excluding small interest payments, even for interest amounts of less than $10. An omission here can make the IRS think that you may have forgotten to declare other things.

In 1940, instructions for Form 1040 were two pages long. Currently, the instructions for Form 1040EZ are nearly 40 pages long.