家計

1. Origins, structure, and basic meaning

• Structure: 家計 is read as かけい and is a noun for a household’s income, spending, budget, and resulting financial condition.
• Basic usage: Reviewing finances appears in 家計を見直す, while financial strain appears in 家計に響く.

2. Common pitfalls and similar expressions

• Difference from 家庭
  • 家庭 denotes the home or family life; 家計 is specifically the household’s flow of money and financial position.
• Figurative 響く
  • 家計に響く does not concern sound: it means that a price increase or expense puts pressure on household finances.