The United States has more automobiles per capita than any other country in the industrial world, and taxpayers use those automobiles for business and nonbusiness purposes. The former classification affords favorable individual income tax treatment, while the latter does not. However, to secure...

Over the last decade, the tax gap — the difference between what taxpayers owe in taxes and what they actually pay — has remained significantly large. A contributory factor to the tax gap's size is the fact that many taxpayers mischaracterize the tax treatment of their automobile expenses and...

Improving tax compliance is a common goal of governments worldwide. The United States is no exception. The size of the nation's “tax gap” — or the difference between what taxpayers pay in taxes in a timely manner and what they should pay if they fully complied with the tax laws — is...