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

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

Financial accountancy (or financial accounting) is the field of accountancy concerned with the preparation of financial statements for decision makers, such as stockholders, suppliers, banks, employees, government agencies, owners, and other stakeholders.

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

An income tax audit is the examination of a business or individual tax return by the IRS or state tax authority. The IRS and states interchangeably use the terms audit, examination, review, and notice to describe the enforcement of tax codes and filing returns accurately. wikipedia.org

Bookkeeping is the recording of financial transactions. Transactions include sales, purchases, income, receipts and payments by an individual or organization. Bookkeeping is usually performed by a bookkeeper. wikipedia.org