The general rule on business expenses is that you must prove everything in detail to be entitled to a deduction. Logs, preferably made contemporaneously to the business transaction, must show date, amount, and business purpose and you must produce receipts. Fortunately, the tax law has a practical side. Congress, the IRS and the courts each have applied their own brand of practicality in allowing certain exceptions to be made to the business substantiation rule.

Here is a quick review of the major exceptions to the "prove-it or lose-it" rule that exist for business expense deductions. Some are relatively new; one is brand new.

Deductions are a matter of legislative grace, and the taxpayer must establish that he or she is entitled to them. A business taxpayer is required to maintain books and records sufficient to substantiate the items of income and deductions claimed on the return.

If the taxpayer is unable to substantiate expenses through adequate records, the courts have allowed the taxpayers to deduct an estimate of the expenses under the so-called Cohan rule named after the precedent-setting case of that name. This rule states that when a taxpayer has no records to prove the amount of a business expense deduction but the court is satisfied that the taxpayer actually incurred some expenses, the court may make an allowance based on an estimate. However, in determining the amount deductible, the courts may bear heavily on the taxpayer "whose inexactitude is of his own making."

The courts, however, cannot apply the Cohan rule to unsubstantiated travel or entertainment expenses. The Cohan rule also may not be applied to expenses for vehicles and other listed property, such as personal computers.

Expenses for travel, meals, and entertainment are subject to strict substantiation requirements. Travel expenses in this case include meals, lodging, and incidental expenses. The Internal Revenue Code, however, gives the IRS an "out" and allows it to create exceptions to this general rule through its own regulations. The IRS has chosen to do so in a number of limited circumstances. The reason behind most of these exceptions is "administrative convenience" both for the business to maintain records in certain circumstances and for the IRS to spend an inordinate amount of audit resources in policing them. Here are the principal recordkeeping exceptions:

$75 rule.  Documentary evidence, such as receipts, paid bills, or similar evidence, is required for: (1) any expenditure for lodging while away from home; and (2) any other expenditure of $75 or more, except for transportation charges if documentary evidence is not readily available.  For expenses under $75, you do not have to provide receipts but still must maintain adequate records, such as a diary, account book, or some other expense statement.

Per diem.  IRS provides an optional per diem method for substantiating expenses reimbursed by the employer. The method applies to travel expenses for lodging, meals and incidentals, or for meals and incidental expenses (M&IE). Using per diem rates can avoid a great deal of paperwork.

Expenses are deemed substantiated if they do not exceed the per diem rates recognized by IRS. The per diem allowance must cover lodging, meals, and IE, and is not available for an allowance that only covers lodging. The employer still must be able to substantiate the time, place, and business purpose of the travel.

The current rates apply to travel within the continental United States (CONUS) on or after October 1, 2003. Rates vary by locality; where the employee sleeps determines which rate to apply. Different rates apply to travel outside the continental United States, including Alaska, Hawaii, and Puerto Rico.

IRS also provides a separate per diem rate for unreimbursed meals and incidental expenses. These rates can be used only by employees and self-employed individuals to compute the deductible costs of meals and incidental expenses. Lodging expenses still must be substantiated.

Standard mileage rate.  Taxpayers may use a standard mileage rate for the costs of using their car, rather than actual expenses. The 2004 business mileage rate is 37.5 cents per mile. Parking fees and tolls may be deducted separately.

Small fringe benefits.  De minimis fringe benefits are excluded from income and do not have to be substantiated. Examples of these benefits include monthly transit passes and occasional meal money and transportation for employees working overtime.

Statistical sampling. Recently, the IRS provided significant relief from the substantiation requirements for certain meal and entertainment (M&E) expenses. By using a statistical sampling method specified by IRS, employers can avoid the need to review every meal and entertainment expense deduction. The new sampling method is available for tax years ending after May 2, 2004.

The sampling method can be used for expenses that are not subject to the rule that normally limits M&E expense deductions to 50 percent. These exceptions include meals and entertainment treated as compensation, such as a paid vacation; recreation benefits for rank-and-file (but not highly compensated) employees, such as a company party; tickets to charitable sports events; and meal expenses excludible as de minimis fringe benefits. An employee cafeteria or executive dining room used primarily by employees comes under this exception.

The sampling method cannot be used for the costs of entertaining business clients.

If you need advice on how your current recordkeeping practices for travel, meals and entertainment square up against these exceptions, please do not hesitate to call this office.