tax rate
A straightforward compound noun used in economic, legal, and everyday contexts to refer to the percentage or rate at which something is taxed.
The consumption tax rate is currently 10%.
The government is considering revising the tax rate for next fiscal year.
Compound of 課 (ka, 'impose, levy') + 税 (zei, 'tax') + 率 (ritsu, 'rate, proportion'). The reading かぜいりつ follows standard on'yomi.