Which of the following types of taxes are commonly deductible?

State and local taxes, real property taxes, personal property taxes, and foreign income taxes are commonly deductible because they fall under the category of taxes that can be itemized on Schedule A of the federal tax return. The IRS allows taxpayers to deduct certain taxes they have paid throughout the year that are considered necessary for personal and financial reasons.

State and local taxes include both income taxes and sales taxes, which can be deducted depending on the taxpayer's preference. Real property taxes refer to those imposed on real estate owned by the taxpayer, while personal property taxes are assessed on tangible personal property such as vehicles. Foreign income taxes can often be deducted or taken as a credit, depending on specific conditions and eligibility.

This categorization of deductible taxes reflects the tax system’s structure, which aims to alleviate the financial burden on taxpayers who contribute towards local and state government services. Thus, understanding the nuances of these deductions is crucial for accurately preparing a tax return.