Final answer:
The correct answer is that the excess of the alternative tax over the regular tax is added to the regular tax. The alternative minimum tax is a parallel system to ensure higher-income earners pay a minimum amount of tax.
Step-by-step explanation:
The correct statement regarding the alternative minimum tax (AMT) is the third option: the excess of the alternative tax over the regular tax is added to the regular tax. The AMT is a parallel tax system that operates alongside the regular income tax. It ensures that individuals and corporations that benefit from certain tax advantages pay at least a minimum amount of tax. Taxpayers have to calculate their tax liability twice - once under the regular income tax rules and again under the AMT rules. They then pay the higher of the two.
The purpose of the AMT is to prevent high-income earners from paying too little income tax by taking a variety of tax deductions and credits. It does this by adding back certain tax preferences into a taxpayer's income and recalculating the tax using a separate set of rules and rates, which can result in a higher tax liability.