Commissions are a form of variable-pay remuneration for services rendered or products sold. Commissions are a common way to motivate and reward salespeople. Commissions can also be designed to encourage specific sales behaviors. For example, commissions may be reduced when granting large discounts. Or commissions may be increased when selling certain products the organization wants to promote. Commissions are usually implemented within the framework on a sales incentive program, which can include one or multiple commission plans (each typically based on a combination of territory, position, or products).
Payments are often calculated using a percentage of revenue, a way for firms to solve the principal–agent problem by attempting to realign employees' interests with those of the firm. However, models other than percentages are possible, such as profit-based approaches, or bonus-based approaches. Commissions allow sales personnel to be paid (in part or entirely) based on products or services sold, rather than just hourly or based on attempted sales.
Although many types of commission systems exist, a common methodology to manage total spend is known as on-target earnings. On-target earnings represent a salesperson's base pay, plus expected commissions (assuming the salesperson meets a quota). On-target earnings help salespersons estimate their expected total compensation, should they meet company-specified goals.
One of the most common means of attempting to align principal and agent interests is to design incentives tracking agent performance. There is a high degree of variability in terms of types of compensation plans, such as fixed salary, straight commissions, or a combination of both. Often, commissions are awarded for reaching a sales goal called a quota. Also, commission structures can include multiple levels of attainments, each with a different threshold and associated rewards.
Sometimes, a commission structure may not involve employees, but rely only on independent contractors. Industries, where a commissions are commonly include car sales, property sales, insurance booking, and most sales jobs. In the United States, a real estate broker who successfully sells a property might collect a commission of 6% of the sale price.
In 2011, California Governor Jerry Brown signed into law AB 1396 amending the California Labor Code requiring all employers who pay commissions to enter into written contracts with their employees regarding how commissions will be earned, computed and paid. The new law, effective on 1 January 2013, further states that commission excludes "short-term productivity bonuses such as those paid to retail clerks" and "bonus and profit-sharing plans, unless there has been an offer by the employer to pay a fixed percentage of sales or profits as compensation for work to be performed."
If an investment is made directly through a financial adviser, TC is generally kept by the adviser. However, some agencies (for example Commsec) return half of the TC to the client.
A financial adviser should act purely in the investors' best interests. However, it is possible that the financial adviser may direct the investment towards funds that are most profitable in terms of TC. Supporters of the directing of investments into funds benefiting the financial adviser claim that it encourages the adviser to maintain the value of the portfolio, thus aligning their interests with those of their clients. Detractors suggest that investors are usually unaware of the practice and that it is ineffective as an incentive.
Following the Retail Distribution Review in the United Kingdom, trail commission is banned on sales of new investment products as of April 6 2014 and will required to be completely phased out by April 6 2016. 
In the financial services industry in the UK, rules set out in the Retail Distribution Review of December 31, 2012 mean that an Independent Financial Adviser can not take commission in the management of their client's wealth. As set out by the Financial Conduct Authority, advisers must now agree an upfront charging structure in advance to a client before advice is given.
For customers who do not want to pay a separate upfront fee, there is an option to have payment of the charges deducted from the investment held by the product provider. These new measures have been applauded by many, particularly in the financial services industry. This has led to changes in the direct to consumer, non-advised sector, with some companies now charging upfront fees to customers for financial products rather than taking commission on policies and investments.
- Article in The Observer (Britain) warning investors.
- Article in www.theage.com.au (Australia) calling for an end to trail commissions.
- McConnell, Campbell R.; Brue, Stanley L. (2008). Economics (17th ed.). New York, NY: McGraw-Hill/Irwin. ISBN 978-0-07-329392-9.
- Madhani, P. M. (2009). "Sales Employees Compensation: An Optimal Balance Between Fixed and Variable Pay". Compensation & Benefits Review. 41 (4): 44–51.
- "Labor & Employment Law: Looking Forward to 2012" (PDF). Buchalter Nemer. December 2011. Retrieved 2013-08-13.[permanent dead link]
- "Retail Distribution Review". Financial Services Authority. February 17, 2009. Retrieved January 13, 2015.
- "Retail Distribution Review: Adviser Charging". Financial Conduct Authority. September 12, 2014. Archived from the original on December 5, 2014. Retrieved January 13, 2015.
- "Compare Life Insurance: Commission-Free versus Commission-Based". May 12, 2014. Retrieved January 13, 2015.