payer
n.a person or organization that gives money for a service or product. You often hear this in business or when talking about taxes.
n.an entity that pays or is liable to pay a sum of money. Often used in specific compounds like 'taxpayer' or 'ratepayer' to identify the source of funding.
“The insurance company is the primary payer for these medical bills.”
“The government is often the largest payer in the healthcare system, negotiating prices directly with pharmaceutical companies.”
“In a single-payer healthcare system, the state acts as the sole financier of medical services, aiming to streamline administrative costs and ensure universal access.”
Commonly appears in financial and legal contexts; frequently used in the compound 'taxpayer'.
From pay + -er (“subject of action”).
Etymology adapted from Wiktionary, available under CC BY-SA 4.0.