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Attention, not luck, will prevent an audit

March 17, 2010

St Patricks Day On St. Patrick's Day, we all claim a bit of the Emerald Isle. But it takes more than the legendary luck of the Irish to prevent a tax audit.

True, the IRS has most recently been focusing its examinations on higher income taxpayers.

And more business, both large and small, also are getting once overs, especially when it comes to how they classify workers.

So most of us don't have to worry that much about getting that dreaded letter from an auditor. Unless, of course, we do something that attracts an IRS examiner's eye.

One way the IRS decides whether to pull a return for a closer look is if it sticks out from the crowd. Yep, when it comes to taxes, it doesn't pay to be unique.

What's the DIF? The agency uses DIF, or Discrimination Information Function, to compare filings. Basically, your tax return is compared to a computer model and is given a DIF score rating the probability of inaccurate information on the return.

Returns with high DIF scores are pulled and reviewed by actual IRS employees to determine which ones have the greatest potential for yielding additional taxes and, of course, the associated interest and penalties.

While the IRS acknowledges that is has a DIF system and tweaks it now and then, it's a highly guarded secret as to what goes into the calculations. But over the years, it's become obvious that the IRS doesn't look kindly upon filers whose itemized deductions vary greatly from the claims of most other taxpayers in the same income bracket.

So with the April 15 filing deadline less than a month away and many of us scrambling to find as many tax cuts as we can, I wanted to share with you some numbers pulled together by the tax information and software company CCH.

The table below is based on IRS statistics for tax year 2007, the latest complete figures available when it was produced earlier this year. It shows the average amount of popular deductions claimed on Schedule A's that year in six income brackets.

Adjusted Gross Income Medical
Expenses
Taxes Interest Charitable
Gifts
$15,000 to
$30,000
$6,849 $2,959 $9,102 $1,931
$30,000 to $50,000 $6,040 $3,623 $9,262 $2,127
$50,000 to $100,000 $6,690 $5,822 $10,557 $2,612
$100,000 to $200,000 $9,922 $10,370 $13,766 $3,790
$200,000 to $250,000 $22,810 $17,013 $18,030 $5,733
$250,000
or more
$3,281 $49,370 $28,110 $23,817

Remember, these
are averages only. CCH warns that the IRS takes a dim view of taxpayers who base their
claimed deductions on these figures.

But the amounts are useful in helping you see if your actual deduction might be a tad out of
line.

Now don't go scaling back just because that's the case. Just make sure you can document why you have such a high, say, medical deduction claim. If you can prove it, then claim it.

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It’s over! With October’s extended filing deadline behind us, it is now time to focus on year-end moves to reduce your 2026 tax bill. 

You’ll find ways to do just that on the Tax Tips page (see the More Tax Posts drop-down menu at the top of the blog), as well as the separate tax tip pages for each month, notably October through December. If you’re on the Tax Tips page, you’ll find a monthly list at the end of this column. If you’re on another blog page, you can head straight to the October tips; at the bottom of that tips page you’ll find links to all the other 11 months’ collections of tax advice.

Not to spoil what you’ll find in that tax advice, but it does cover such things as tax deductions for charitable donations, investment moves that could reduce tax due, and ways to max out your tax-favored retirement savings. 

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So that you don’t miss that final tax year deadline, also keep an eye on the countdown clock below. It will keep you on top of just how much time is left to make important, tax-saving moves. (Note: I’m in the Central Time Zone, so adjust accordingly for where you live.)

Comments
  • Joe T. Taxpayer

    Actually, you should have the documentation to verify ALL itemized deductions claimed on Schedule A (no matter how high or “out of line” it may be). In the event of an audit by the IRS the burden of proof is on the taxpayer to verify anything that is claimed on the tax return. As such, the rule is actually quite simple . . . if you don’t have the documentation, then don’t claim it.

  • Toni McIntyre, CPA, E. A.

    Part of how they get the DIF score is from the results of NRP audits. When they first started they were done every few years. Now, for 1040s, they are constant. Anyone may be audited for an NRP audit. In the old incarnation, TCMP audits I once audited a 1040EZ for a high school kid with a couple of small W-2s.

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