10 Things IRS Wont Tell You

1. "Fear is often our best weapon."

The threat of an audit is enough to send many folks scurrying to their tax preparer, and no wonder. "With audits, you're assumed guilty until proven otherwise," says Long. It's this fear, coupled with the complexity of the system, that causes some to overpay their taxes by not taking deductions they're entitled to, according to experts. A study by the Government Accountability Office found that 2.2 million people a year overpay, by an average of $438. "Americans are leaving a lot of money on the table," says Roni Deutch, a Sacramento-based tax attorney.

10 Things IRS Wont Tell You

2. "Like it or not, you may need help with your taxes."

When Cindy Hockenberry and her husband sent in a tax-penalty payment in 2007, they knew there was a chance their math might not jibe with the IRS's. When that turned out to be true and the amount was much higher than expected, they decided to dispute it. Fortunately for them, Hockenberry's a pro. As tax research coordinator at the National Association of Tax Professionals, she spotted a glitch in the IRS's calculation; after visiting the local IRS office, the agency admitted its mistake and lowered the penalty. "There's no way the average taxpayer would have noticed," she says.

10 Things IRS Wont Tell You

3. "You don't have to be rich to get audited."

The IRS's job is to enforce the tax laws enacted by Congress and to collect what's due. Its primary weapon? The audit, whose use has more than doubled since 2000, to surpass 1 percent of all returns, according to the Transactional Records Access Clearinghouse, a Syracuse University data-research organization. The increase can be attributed to the rising number of so-called correspondence audits -- those done through the mail asking for specific information rather than, say, investigating your whole return, says Susan Long, codirector of the organization. "It's more efficient."

10 Things IRS Wont Tell You

4. "The AMT is our ATM."

When the alternative minimum tax was introduced in 1969, it affected only a handful of taxpayers with high income and big deductions. But by 2010, it will hit 87 percent of married couples with income between $75,000 and $100,000. That's not what it was designed to do; the AMT was meant to force big earners with lots of deductions to pay their fair share. Now it "brings in a group of taxpayers the IRS has no problem with," says Olson. "The AMT has run its course." The problem is, the AMT hasn't been updated to account for inflation. Instead, Congress has been adjusting exemption criteria on a yearly basis. "It's just a Band-Aid," says Hockenberry.

10 Things IRS Wont Tell You

5. "Just because we billed you doesn't mean you owe us money."

Receiving a CP2000, also known as a correspondence audit, sure sounds scary, but in most cases, you don't actually owe any more money. Not that the IRS will make that clear -- it's likely billing you because of a discrepancy on a certain deduction or reported income; then it's up to you to prove otherwise. But as the number of these audits have risen, up 176 percent since 2000, the chance for error goes up as well. The IRS says 98 percent of the audits it sends out require clarification, not payment, but Charlotte Ogorek, an Illinois-based enrolled agent, thinks it's more like 85 percent.

10 Things IRS Wont Tell You

6. "If you don't pay, we'll sic a collection agency on you."

If you thought dealing with the IRS was bad, wait till you're past due on a payment and get turned over to one of the two private collection agencies the IRS taps to help collect its money. Since 2005, the IRS has been assigning delinquent taxpayer accounts to either Pioneer Credit Recovery or the CBE group of Iowa -- much like any other business or lender. "These are federal taxes," says Olson, the National Taxpayer Advocate. "The IRS should be collecting them." The retention of these private agencies costs $7.65 million annually, yet when the IRS works these cases instead, "it's three times more productive," Olson says. (A spokesperson for Pioneer Credit Recovery and CBE says the issue isn't who can do the work more efficiently; it's whether these taxes would be collected at all without the private collection agencies.)

10 Things IRS Wont Tell You

7. "Want to go green? We'll help pay."

Tucked into last year's unprecedented $700 billion bailout plan was some pork that even a vegan could love. Congress not only added an extension of the eco-friendly Energy Policy Act of 2005, which was set to expire at the end of 2007, but it also sweetened the pot for homeowners looking to green up their homes.

10 Things IRS Wont Tell You

8. "April 15 isn't necessarily a hard deadline."

If you're one of the 112 million taxpayers who receive a refund every year rather than owing more, you have a lot more flexibility around the standard Apr. 15 deadline than you might think. Feeling rushed this year? By filling out IRS form 4868, which you can find online, you can buy yourself a no-questions-asked six-month extension on filing your taxes. And you can file the form requesting your extension as late as Apr. 15 without incurring any penalties. The only catch -- and it's significant for some: If you do owe any taxes, then you must still pay those by the 15th.

10 Things IRS Wont Tell You

9. "We may be a government agency, but that doesn't mean your data's safe."

One things you may not be thinking about as you file your taxes this year is that the documents you're sending off to the IRS contain virtually every piece of information an identity thief would ever need to drive your credit, and your sanity, into the ground. And considering that data breaches are on the rise -- up 47 percent in 2008 from 2007, according to nonprofit Identity Theft Resource Center -- protecting your information, which includes your Social Security number and home address, should be paramount. But a recent report by the Treasury Inspector General for Tax Administration (TIGTA), an independent IRS oversight organization, casts some doubt on the agency's ability to protect your information. For example, TIGTA says two new systems the IRS is implementing to manage taxpayer accounts and account data were "deployed with known security vulnerabilities in the controls over sensitive data protection, disaster recovery and system access."

10 Things IRS Wont Tell You

10. "We may still have your refund."

Waiting on a refund? Typically, it takes three to six weeks to get your money back from Uncle Sam, depending on whether you e-filed or sent your paper return through snail mail. Either way, the IRS does a pretty good job, by and large, of getting refund checks out to taxpayers in a timely manner. But the agency's record is hardly perfect: Every year a fraction of refunds -- belonging to more than 100,000 taxpayers, and with an average due of $988 -- never get to their destination.

10 Things IRS Wont Tell You