But 58 percent in the AP-GfK poll say completing a federal tax return is easy. Thirty-eight percent call it hard.
Fully 86 percent who have completed their tax forms say they are extremely confident or very confident that they filled them out correctly.
Not surprisingly, higher income taxpayers are more likely to say that filling out tax forms is difficult. Wealthy people tend to have more complicated taxes because they often have multiple sources of income and they are more likely to itemize their deductions, making them eligible for more tax breaks.
Forty-five percent of those with incomes above $100,000 said it is hard, compared with 33 percent among those making less than $50,000.
Through March 28, the IRS has processed 89 million returns. About 82 percent have qualified for refunds, averaging $2,831. That's about $207 billion in tax refunds. Almost 91 percent of returns have been filed electronically.
Americans think most of their fellow taxpayers are honest, but not all of them. On average, poll-takers estimate that about one-third of Americans intentionally cheat when filling out their tax returns.
Erma Pierce of Poplar Bluff in southeast Missouri said she thinks about half of people cheat on their taxes, and she takes a dim view of it.
"You're not supposed to cheat, lie or steal," Pierce said. "It's against the Bible."
Thornton, the small business owner in Connecticut, said her estimate depends on the definition of cheating.
"People think of cheating as a case of, I reported I have nine children and I only have two. Or I reported I only made $20,000 this year and I actually made $50,000," Thornton said. "They think of those forms of cheating, the absolute blatant, extravagant forms."
Thornton's definition of cheating is broader, which is why she thinks 80 percent to 90 percent of people cheat on their taxes.