Person A earns $200,000 per year but carries $400,000 in consumer debt and saves only $5,000 annually. Person B earns $60,000 per year, carries no consumer debt, and saves $15,000 annually. After ten years, assuming no investment returns, who has the higher net worth?
APerson A, because higher income always produces more wealth over time
BPerson B, because their net worth grows by $15,000 per year while Person A's debt likely grows faster than their savings
CThey are equal, because income and savings rate balance out over a decade
DPerson A, because earning more means more available to save even if current savings are low
This scenario illustrates the core insight: income is a flow, net worth is a stock, and it's the stock that determines financial health. Person A's high income is undermined by high debt and a low savings rate — after 10 years their net worth could still be deeply negative. Person B's lower income with a higher savings rate produces steady, compounding net worth growth. The common misconception (Option A) conflates earning capacity with accumulated wealth.
Question 2 Multiple Choice
Which of the following best explains why a mortgage on an appreciating home can improve net worth even while you're still making payments?
AMortgage payments reduce liabilities, so any debt paydown mechanically increases net worth
BThe home's market value (an asset) may grow faster than the mortgage balance (a liability), so the gap between them — your home equity — increases on both sides simultaneously
CMortgages are always good debt because interest is tax-deductible
DNet worth includes future income, so the mortgage is offset by projected salary growth
The key insight is that net worth is assets minus liabilities, so both sides of the balance sheet matter simultaneously. If a home appreciates at 5% per year while the mortgage balance shrinks through payments, home equity (the asset value minus the remaining debt) grows from two directions at once. Option A is partially correct but incomplete — it ignores the asset appreciation side. Options C and D introduce factors not part of the net worth calculation itself.
Question 3 True / False
A person with a high salary necessarily has a higher net worth than a person with a lower salary.
TTrue
FFalse
Answer: False
Income (salary) is a flow — what comes in each period. Net worth is a stock — what has accumulated. High earners who spend everything, accumulate consumer debt, or save very little can have lower net worth than moderate earners who save consistently and avoid debt. Two people with identical salaries can have wildly different net worths depending on their savings rate, debt levels, and asset choices. Confusing income with wealth is one of the most common financial misconceptions.
Question 4 True / False
Tracking net worth annually is more informative than tracking income because net worth captures both accumulation and debt, revealing whether your financial position is actually improving.
TTrue
FFalse
Answer: True
Net worth captures the full picture: the assets you've accumulated and the liabilities you carry. A rising income that's entirely consumed by spending and debt doesn't improve net worth. A flat income with consistent saving and debt reduction does. Trajectory — is net worth growing? — is what reveals whether you are building toward financial independence, regardless of what the income number says.
Question 5 Short Answer
Why is net worth considered a better measure of financial health than income, and what practical information does a net worth calculation reveal that an income figure does not?
Think about your answer, then reveal below.
Model answer: Income tells you how much money flows in each period; net worth tells you how much has accumulated. A high income with high debt and low savings produces little net worth, while a modest income with disciplined savings and low debt can produce substantial net worth. Net worth reveals your actual financial position — what you truly own free and clear — and its trajectory (growing or shrinking, and why) shows whether your financial behavior is building toward independence or just sustaining current spending.
The income vs. net worth distinction is foundational to financial literacy. Savings rate (not income level) is the primary driver of net worth growth for most people. A net worth calculation also distinguishes between asset types (appreciating vs. depreciating) and liability types (strategic vs. high-cost consumer debt), enabling better decisions about where to direct resources.