Our global operations subject us to income taxes (e.g., corporate income, withholding, and other taxes in lieu of corporate income tax) and non-income taxes (e.g., sales, use, value added, goods and services, and payroll taxes) in numerous jurisdictions. Our future tax expenses and liabilities could be affected by changes in tax laws or the interpretation of the tax laws, as well as changes in our business operations. Our future tax expenses could be affected by changes in the composition of earnings in jurisdictions with differing tax rates, changes to our transfer pricing methodologies, changes in the valuation of our deferred tax assets and liabilities, including net operating losses, or changes in determinations regarding the jurisdictions in which we are subject to tax. From time to time, the U.S. federal, state, local, and foreign governments make substantive changes to tax rules and the application thereof. Legislative and tax treaty changes and the interpretation thereof could result in materially higher corporate taxes than would be incurred under existing or prior tax law or interpretation and could adversely impact profitability. As tax authorities increase their efforts to increase revenue, changes in tax laws and the frequency of tax audits could increase our future tax liabilities. We are subject to ongoing and periodic audits by the Internal Revenue Service ("IRS") and various state, local, and foreign tax authorities. We believe we have established adequate reserves for potential tax liabilities, but the final amount of taxes, interest and penalties, in connection with any tax audit, could exceed the amount of such reserves, which could reduce our profits and cash position. Furthermore, in computing our obligations under tax laws, rules and regulations, we are required to take various tax accounting and reporting positions on complex matters that are not entirely free from doubt and for which we have not received rulings from the governing authorities. Although we believe our tax positions are reasonable, we cannot assure you that the applicable taxing authorities will agree with our positions. The final determination of tax audits could be materially different from our historical tax provisions and accruals, in which case we may be subject to additional tax liabilities, possibly including interest and penalties, which may be material and could adversely affect our business, financial condition and results of operations. Amendments to existing tax laws, rules or regulations or enactment of new unfavorable tax laws, rules or regulations could have an adverse effect on our business and financial performance. For example, U.S. federal net operating loss (NOL) carryforwards generated in taxable periods beginning after December 31, 2017, may be carried forward indefinitely, but the deductibility of such NOL carryforwards in a taxable year is limited to 80% of taxable income in such year. Our effective tax rate in the future could be adversely affected by changes to our operations and ownership, changes in the mix of earnings in countries with differing statutory tax rates, the discontinuation of beneficial tax arrangements in certain jurisdictions or the adoption of a global minimum tax rate of 15% as established by the Organization for Economic Co-operation and Development, or Pillar 2 Framework. Moreover, we may become subject to new tax regimes and may be unable to take advantage of favorable tax provisions afforded by current or future laws, rules, or regulations.
Furthermore, each of our properties is subject to real estate and personal property taxes, especially upon any development, redevelopment, rebranding, repositioning and renovation. These taxes may increase as tax rates change and as our properties are assessed or reassessed by taxing authorities. If property taxes increase, we would incur a corresponding increase in our operating costs and expenses, which could have a material adverse effect on us, including our business, financial condition, liquidity, results of operations and prospects. Because we own properties, we are subject to the risks that generally relate to investments in real property. The investment returns available from equity investments in real estate depend in large part on the amount of income earned and capital appreciation generated by the related properties, as well as the expenses incurred. In addition, a variety of other factors affect income from properties and real estate values, including governmental regulations, insurance, zoning, tax and eminent domain laws, interest rate levels and the availability of financing. For example, new or existing real estate zoning or tax laws can make it more expensive and/or time-consuming to develop real property or expand, modify or renovate properties. When interest rates increase, the cost of acquiring, developing, expanding or renovating real property increases, particularly as the cost of borrowing increases, and real property values may decrease as the number of potential buyers decreases. Similarly, as financing becomes less available, it becomes more difficult both to acquire and to sell real property. Finally, governments can, under eminent domain laws, take real property. Sometimes this taking is for less compensation than the owner believes the property is worth. Any of these factors could have a material adverse impact on our results of operations or financial condition. In addition, equity real estate investments, such as the investments we hold and any additional properties that we may acquire, are relatively difficult to sell quickly.