What is the term for any compensation or gift given for improperly obtaining or rewarding favorable treatment?

The correct term for any compensation or gift given for improperly obtaining or rewarding favorable treatment is a kickback. A kickback typically refers to a negotiated fee paid to someone as part of a larger agreement, where the recipient has influence over the allocation of funds or resources. This practice is often viewed as unethical or illegal, as it compromises the integrity of the decision-making process and prioritizes personal gain over fairness.

In contrast, a bribe is generally considered a broader concept that refers to any payment made to induce someone to act dishonestly or unfairly in their official duties. While it may seem similar to a kickback, the term "kickback" has a more specific context, often related to transactions that involve collusion between parties.

Incentives and bonuses typically refer to legitimate rewards offered for performance or to motivate positive outcomes within a business or organization. These terms do not involve the same connotations of impropriety or unethical influence as kickbacks and bribes do.