5 ways to avoid an audit

Rule 3: Substantiate, substantiate, substantiate

In the audit itself, the IRS will focus on those items for which taxpayers have historically failed to keep the required substantiation. Traditionally, auto, travel, meals and entertainment have been the areas most audited. To deduct auto expenses, you must establish the percentage of business use as well as the actual expenses incurred. I ask my clients to keep a mini-cassette recorder in their cars to record the business mileage and purpose. Kept contemporaneously, it is acceptable as sufficient substantiation of business use. Alternatively, a written diary of miles used for business would also be accepted.

You must have a receipt for all expenditures of $75 or more for meals and entertainment. The rule is simple: no receipt, no deduction. If the expense is less than $75, a diary notation is sufficient. However, both the receipt and the diary notation must have all of the following information:

• The amount paid

• The name and location of the restaurant or entertainment facility

• The person you entertained

• That person's business relationship with you

• The business discussion related to the entertainment

Unless you talk business, before, during or after the meal, your deduction won't be allowed. Remember, with the IRS, paper rules! With any and all expenses, deductions will be allowed more easily if you have a piece of paper to back them up.

Here's another piece of advice: Don't come in with a carton of miscellaneous receipts. The more organized your receipts and the more paper you produce, the easier it is for an IRS agent to conclude that you are organized, have full substantiation and owe no additional taxes.

One more point about how you're selected for an audit. The IRS computer pulls out many returns for audit on a random basis. Your income, deductions or where you live are irrelevant. Your number just came up -- you won the audit lottery. A student making $3,000 a year is just as likely to be selected as an accountant making $300,000. You just got "lucky."

The IRS can audit you for three years after you file your return. In reality, however, most returns are audited within 18 months of filing. This gives the IRS time to do the review and request the appropriate substantiation before the statute of limitations (usually a three-year period) ends. Once the statute has run out, the IRS normally cannot audit your return, and your expenses are insulated from examination. It has been claimed that the later you file, the less likely it is the IRS will pick your return to be examined. The IRS still insists that agents are not graded or evaluated on the amount of money they collect until -- surprise! -- congressional testimony reveals that policy is not the same as practice.

Rule 4: Know when to file

I recommend that you have your return prepared early. If you have a big refund and are unconcerned with audit issues, file early and get your money back. If you have taxes due, and no penalty for underpayment, don't file until April 15. Don't ever pay a federal tax bill before it is due. It's an interest-free loan to the IRS.

On the other hand, if you are concerned about a potential audit, never file until the last minute. It won't hurt and can only decrease your chances of being selected.

Rule 5: Plan your taxes to pre-empt an audit

I highly recommend the use of pre-audit strategies. If, say, you have a huge medical deduction for a year that you feel would increase your chances of being audited, attach copies of your medical bills to your return.

Alternatively, if you made an unusually large charitable contribution, attach a copy of the check or receipts to your return. The IRS computer will still kick out your return, but when a real person looks at it, the reviewer will recognize that you know the rules. It may actually reduce your odds of a full audit.

Updated July 7, 2009

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