Enforcement Activities versus Statistical Studies (also called Calibration Audits)
Enforcement Activities
Virtually all enforcement activities use computers to identify potential compliance issues. Math errors and document matching generally beget a letter to the taxpayer. The "math error" letter indicates that you calculated the tax "this way," and the IRS calculates it "that way." If you agree, send the difference within 10 days.
If you reviewed your return before mailing it, and it was not electronically filed, I advise that you check your numbers again. The error rate on the IRS's side is quite high if the return was not electronically filed. They manually input your return numbers into their computers. It is easy for them to transpose numbers, leave numbers off, etc. I cannot tell you how many copies of Schedule A I have had to resubmit to the IRS or Georgia, over the last several years. They were left off the taxpayer's return at the IRS, and their computer generated a standard deduction. This generated a letter from the IRS, indicating that the taxpayer owed more money. I have also had Schedule C's submitted with losses that become profits, etc.
Document matching also generates a letter from the IRS. For every W-2, 1099, K-1, 1098, etc., that you receive, a copy is generated and sent to the IRS. They "match" theirs with yours. If they receive something that they do not see on your return, they send a letter indicating the amount is missing and that you owe more money. Again, review your return or have your tax preparer or C.P.A. review your return. In many cases, you have included the amount, but not where the IRS expects it to be. If indeed you forgot to include the amount, send the money. This DOES NOT put you on a suspect list.
If you disagree with the IRS, you must send an explanation, as well as the back-up documentation, as to why you disagree. At this point, the IRS matches the skill and judgment of IRS personnel engaged in enforcement against your explanation. If it is simple, you will receive another letter stating that they accept your explanation. If it is more complex, they may decide to refer the matter to their audit people who will require more information. Again, this does not necessarily mean the IRS will be camping on your doorstep. In many cases, "it is a good thing" to be referred up the ladder, as you will be dealing with personnel with some experience, and who are capable people with the authority to make a decision.
Calibration Audits or Statistical Studies
Random audits were designed to provide the IRS's computers with statistics about what people from certain income levels deduct. Therefore, if you earned $40,000 per year and they audited you and found that all of your deductions were legitimate, the computer knew that a $40,000 employee generally had X amount of mortgage interest, X amount of charity, X amount of medical, etc. They attempted to take a cross section of the public , e.g., teachers, doctors, self-employed plumbers, and arrive at some statistical information.
This statistical information could then be used to generate a "letter audit." I had a "letter audit" completed on my son. It was not painful. He had very large medical bills obviously, larger than someone of his income level should have had according to the IRS computer. The first IRS letter insisted on an in person meeting. He was to bring all of his medical receipts. When he called me to tell me he had a letter from the IRS to appear at their office, he said he was worried. I have to admit, I laughed and then said, "you don't have to go to an IRS office how ridiculous." He insisted that the letter said this and that he was worried. I told him to fax me the letter, and that the IRS wants people to be worried, but he had nothing on his return to be worried about.
Sure enough, the letter stated that he, or his representative, needed to appear. In this case, the audit was in Chicago, and I am in Atlanta. I contacted the representative, faxed them the four receipts totaling his medical expenses and asked for a change of venue to Atlanta. After six weeks, we finally heard that no audit would be conducted, and that the matter was cleared up. While I know that my son was not quaking in his boots since his mom, and C.P.A., told him that she would handle it, I am sure that this would generate a lot of anxiety for many taxpayers. Well folks, this is apparently what is coming from the IRS over the next few years. The IRS says that it is doing far too many audits generating "no change." This means that the taxpayer was truthful when filing and has all of the back-up to prove it. The IRS wants to spend their dollars fruitfully and needs new statistics.