家計
かけい · kakei · JLPT N1 · noun
economy
💰 家 (house) + 計 (count/plan) = counting the household's money
家 means house or family and 計 means count or plan. Together they name the planning and counting of a household's income and spending.
家 — roof 宀 + pig 豕
Originally a pictograph of a pig under a roof, since domesticated pigs were kept in or under the home in ancient China. Over time the meaning broadened from 'household' to 'family,' and by extension 'home' or a specialist (as in 专家, 'expert').