An audit of financial statements aims to express or disclaim an independent opinion on the financial statements. The auditor expresses an independent opinion on the fairness with which the financial statements presents the financial position, results of operations, and cash flows of an entity, in accordance with the generally acceptable accounting principle (GAAP) and "in all material respects". An auditor is also required to identify circumstances in which the generally acceptable accounting principles (GAAP) has not been consistently observed.[39]
Both the words accounting and accountancy were in use in Great Britain by the mid-1800s, and are derived from the words accompting and accountantship used in the 18th century.[26] In Middle English (used roughly between the 12th and the late 15th century) the verb "to account" had the form accounten, which was derived from the Old French word aconter,[27] which is in turn related to the Vulgar Latin word computare, meaning "to reckon". The base of computare is putare, which "variously meant to prune, to purify, to correct an account, hence, to count or calculate, as well as to think".[27]
Financial accounting refers to the processes used to generate interim and annual financial statements. The results of all financial transactions that occur during an accounting period are summarized into the balance sheet, income statement and cash flow statement. The financial statements of most companies are audited annually by an external CPA firm. For some, such as publicly traded companies, audits are a legal requirement. However, lenders also typically require the results of an external audit annually as part of their debt covenants. Therefore, most companies will have annual audits for one reason or another.

Tax gain-loss harvesting is another form of tax planning or management relating to investments. It is helpful because it can use a portfolio's losses to offset overall capital gains. According to the IRS, short and long-term capital losses must first be used to offset capital gains of the same type. In other words, long-term losses offset long-term gains before offsetting short-term gains. As of 2018, short-term capital gains, or earnings from assets owned for less than one year, are taxed at ordinary income rates. 
There are several other retirement plans that an individual may use to help reduce tax liability. 401(k) plans are popular with larger companies that have many employees. Participants in the plan can defer income from their paycheck directly into the company’s 401(k) plan. The greatest difference is that the contribution limit dollar amount is much higher than that of an IRA. 
Organizations in individual countries may issue accounting standards unique to the countries. For example, in the United States the Financial Accounting Standards Board (FASB) issues the Statements of Financial Accounting Standards, which form the basis of US GAAP,[1] and in the United Kingdom the Financial Reporting Council (FRC) sets accounting standards.[53] However, as of 2012 "all major economies" have plans to converge towards or adopt the IFRS.[11]
Managerial accounting (also called management accounting) identifies financial information that helps managers run a company’s operations efficiently. Managerial accountants may analyze specific products, costs, or projects, and then provide this information to a company’s managers to enable them to make more informed judgements. Reports that managerial accountants provide to managers include cost analysis, constraint analysis, capital budgeting, trend forecasting, inventory analysis, and other types of product or project analysis, according to the industry in which the company operates. Managerial accounting is largely an internal system.
The total sum of state and local income taxes, real estate taxes, and personal property taxes (such as car registration fees) up to $10,000, or $5,000 if you're married and file a separate return. You can substitute sales taxes you paid for income taxes if this is more beneficial for you, but you cannot include both sales and income taxes—you must choose one or the other.
The history of accounting has been around almost as long as money itself. Accounting history dates back to ancient civilizations in Mesopotamia, Egypt and Babylon. For example, during the Roman Empire the government had detailed records of their finances. However, modern accounting as a profession has only been around since the early 19th century.