Insurance, taxes, and major purchases
Protecting against big risks, understanding taxes, and planning major purchases are key parts of financial wellbeing. This is general education, not personal advice.
Why insurance
Insurance protects against losses that would be financially devastating: serious illness, disability, death of a breadwinner, car accidents, home damage, or liability lawsuits. It pools risks among many people. Insurance is most valuable for low-probability, high-cost events, not small losses you can afford.
Types of insurance
Health insurance covers medical costs; disability insurance replaces income if you cannot work; life insurance supports dependants (term life covers a set period cheaply; whole life adds a savings component at higher cost); auto and homeowners or renters insurance cover property and liability.
Insurance terms
The premium is the price of coverage. The deductible is what you pay before insurance pays; higher deductibles mean lower premiums. Co-insurance and co-pays share costs after the deductible. An out-of-pocket maximum caps annual costs in many health plans.
Income taxes
In the US, federal income tax uses progressive brackets: different portions of income are taxed at increasing rates, so moving into a higher bracket taxes only the income above the threshold at the higher rate. Deductions reduce taxable income; credits reduce tax owed dollar for dollar, making credits more valuable.
Buying a home
Buying a home involves a down payment (often 3-20% of the price), closing costs, mortgage payments, property taxes, insurance, and maintenance. A common guideline is to keep total housing costs below roughly 28-30% of gross income. Renting can make more sense for people who may move soon or lack savings.
Mortgages
Fixed-rate mortgages keep the same interest rate for the loan's life, commonly 15 or 30 years; adjustable-rate mortgages (ARMs) start lower but can rise. Shorter loans have higher monthly payments but far less total interest. US mortgage rates rose from about 3% in 2021 to around 7% in 2023, sharply raising monthly payments for new buyers.
Cars and student loans
Cars lose value quickly (depreciation), so buying reliable used cars or keeping cars longer can save money. US federal student loans offer fixed rates and income-driven repayment options; private loans vary. Borrowing for education is often worthwhile but should be weighed against expected earnings.
Worked example
A single filer has taxable income of 60,000 dollars. In a simplified example with brackets of 10% up to 11,000, 12% to 45,000, and 22% above, tax = 1,100 + 0.12 x 34,000 + 0.22 x 15,000 = 1,100 + 4,080 + 3,300 = 8,480 dollars. The average tax rate is about 14%, even though the top marginal rate is 22%. Actual brackets are adjusted for inflation each year.
Key takeaways
Insurance protects against large, unlikely losses: health, disability, life, auto, home, and liability. Premiums, deductibles, co-pays, and out-of-pocket maximums define costs. US income tax is progressive: only income above each threshold is taxed at higher rates; credits beat deductions. Home buying involves down payments, closing costs, and ongoing costs; mortgages may be fixed or adjustable. Cars depreciate quickly; student loans should be weighed against future earnings.
Flashcard
Pools risk against large losses
Check your understanding
Why is a 1,000-dollar tax credit worth more than a 1,000-dollar tax deduction?