📝 CalcMatrix Blog · Page 16

"Severance pay rules can be confusing. This guide breaks down the N, N+1 and 2N formulas, how the monthly salary base is set, how to count years of service, and whether severance is taxed."

"Side gigs, freelance projects, writing and lecturing — how is this income taxed in China? This guide breaks down labor remuneration withholding rules, the three-tier rates and the annual reconciliation that refunds overpaid tax."

"Brick or siding is more than a look — it decides your maintenance bill for the next 30 to 50 years. Compare vinyl/metal/fiber-cement siding against brick in cost per square foot, lifespan, insulation, and repairs, so you can pick by budget, climate, and how long you plan to stay."

"Smart speakers, smart lights, smart plugs, and smart locks — a starter kit costs a few hundred and a full setup thousands. Do they really save money? Put device investment, energy savings, convenience value, and privacy risks on one ledger, then choose by need and budget — before \"smart\" becomes an expensive remote-control toy."

"A smartwatch tracks your heart rate, shows notifications, and logs workouts — but charges every day or two; a traditional watch lasts a decade and a mechanical piece may even hold value. Which is worth it? Put feature value, battery life, repair costs, and a 5-year cost ledger on one table, then choose by your needs and watch-wearing habits."

"What's actually deducted from your paycheck for social insurance and the housing fund — and how much does your employer pay on top? This guide explains the 2026 contribution base, the personal vs. employer rates for pension, medical, unemployment, work-injury, maternity insurance, and the housing fund, with a comparison table."

"How much does a home solar system cost, how much electricity does it generate, and how many years until it pays back? Put installation cost, annual output, self-use price, and feed-in price into one table to decide if it is worth installing."

"Besides price moves, trading stocks costs you commission, stamp duty, and transfer fees. What's the total cost of a buy-and-sell round trip? How does the 5-yuan minimum commission and a 0.025% fee rate really work? This guide breaks down A-share trading costs with real numbers and a comparison table."

"Video, music, and cloud plans look cheaper in a bundle, but single platforms bought on demand avoid paying for what you never use. Put bundle pricing, shared accounts, content overlap, and cancellation costs into an annual ledger to see how many platforms you actually need."

"Student loans come due after graduation. Learn how to calculate monthly payments, understand interest rules, use the grace period, and decide whether early repayment is worth it — with a loan calculator."