QuickBooks is a line of business accounting software developed and marketed by Intuit. wikipedia.org

Tax preparation is the process of preparing tax returns, often income tax returns, often for a person other than the taxpayer, and generally for compensation. Tax preparation may be done by the taxpayer with or without the help of tax preparation software and online services. wikipedia.org

Tax law is an area of legal study dealing with the statutory, regulatory, constitutional, and common-law rules that constitute the law applicable to taxation, which is the method by which the government levies on economic transactions. wikipedia.org

Corporate tax refers to a tax imposed on entities that are taxed at the entity level in a particular jurisdiction; such taxes may include income or other taxes. Businesses increasingly trade across borders,dealing with constant development in domestic and international tax laws. wikipedia.org

Microsoft Office is an office suite of desktop applications, servers and services for the Microsoft Windows and OS X operating systems. wikipedia.org