Understanding Your Income
Learn the main ways people earn money and how to compare earning options.
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Why understanding your income matters
Income is money you receive. Before you can budget, save, or invest, you need to know exactly how much you actually receive, not what you expect to earn, not what the job listing says, but the actual dollars deposited in your account each pay period.
Types of income
Active income, you exchange time and work for money:
- Wages (hourly × hours worked)
- Salary (fixed amount regardless of hours)
- Tips and commissions (variable based on performance)
- Freelance/self-employed income (project or hourly)
Passive income, money that flows without direct time exchange:
- Interest on savings accounts
- Dividends from stocks
- Rental income
- Royalties
For most teenagers, income is entirely active, wages from a part-time job. Understanding passive income matters for later, but the immediate skill is understanding how to read and compare active income options.
Gross vs net income
Every payslip shows two income numbers:
- Gross income: what you earned before deductions (hours × rate, or full salary)
- Net income: what you actually receive after taxes and other deductions
Social Security (6.2%), Medicare (1.45%), federal income tax, and state income tax all come out before you see the money. The gap between gross and net is typically 15–25% depending on your income level and state.
Example: $300 gross pay → approximately $250–$260 net pay.
Budget from net, not gross.
Comparing job offers
Hourly rate isn't everything. A $15/hour job that offers 12 hours/week provides less total income than a $12/hour job offering 20 hours/week. $12 × 20 = $240/week vs $15 × 12 = $180/week. The lower hourly rate produces more income because of more hours. When comparing jobs, calculate: (hourly rate) × (guaranteed weekly hours) × 4 = approximate monthly gross income. Then factor in commute costs, which reduce net income further.
Variable vs fixed income
- Fixed income: same amount every pay period (salary, set hours per week)
- Variable income: changes each period (tips, commission, seasonal work, fewer hours when slow)
Variable income requires a different budgeting approach. You can't plan around the average if some months are significantly lower. When income is variable, budget from the lowest expected amount, not the average or best case.
What changes the outcome
Two friends both need $200/month for essential expenses. Alex earns $12/hour × 20 hours = $240/week gross → roughly $200 net. Jordan earns $15/hour × 10 hours = $150/week gross → roughly $128 net. Alex can cover expenses every week. Jordan cannot. Hourly rate is not the only variable, hours worked and resulting take-home pay determine whether income actually covers your needs.
Budget allocator
Split a monthly income across needs, wants, savings, and a small emergency slice. We normalize your sliders to 100%.
Your 50/30/20 similarity score: 100 / 100 (100 = exact match to 50% needs, 30% wants, 20% savings+emergency).
How to think it through
When evaluating any income source:
- What is the gross hourly/weekly/monthly amount?
- How many guaranteed hours are available?
- What is the estimated net (after taxes)? Use 80–85% of gross as a rough estimate if you don't have exact deduction figures.
- What are hidden costs? Commute, uniform, tools you provide, these reduce effective net income.
- Is the income fixed or variable?
After answering these, you have a usable income number for budgeting.
Real-world example
Two job offers for the same teen. Job A: $11/hour, 25 hours/week, 5-minute walk from home. Job B: $14/hour, 15 hours/week, 45-minute bus ride each way. Job A gross: $11 × 25 = $275/week × 4 = $1,100/month. Job B gross: $14 × 15 = $210/week × 4 = $840/month. Bus pass for Job B: $60/month. Job B effective income: $780/month. Job A at a lower rate generates $320/month more income than Job B, and no commute cost. Hourly rate alone was misleading.
You are comparing two job options
Job A: $12/hour, 20 hours/week guaranteed. Job B: $16/hour, 8–12 hours/week (variable). Which has better total income?
Practice the idea
For any income you receive or are considering, run the full calculation: gross weekly = rate × hours; gross monthly = weekly × 4; net monthly = gross × ~0.82 (rough estimate); net minus commute and other work costs = effective income. This is the number that goes into your budget.
Which choice best shows understanding of your income?
A student faces comparing jobs with different rates and hours. What is the smartest first step?
Job A pays $12 an hour for 20 hours a week. Job B pays $15 an hour for 12 hours a week. Which job provides more total weekly income?
What is the difference between gross income and net income?
Bring it into your life
If you have a job, pull up your last payslip and find both your gross and net income. Calculate what percentage of gross you actually receive (net ÷ gross). If you're considering a new job, multiply the hourly rate by the guaranteed hours to get weekly gross, then estimate 80–85% of that as approximate take-home pay. That's the number that goes into your budget, not the rate from the job listing.
Gross income is what you earn before deductions; net income is what you actually receive. Always budget from net. Hourly rate alone doesn't determine total income, hours worked matter just as much. A $12/hour job at 20 hours ($240/week) produces more income than a $15/hour job at 12 hours ($180/week). When comparing jobs, calculate total weekly or monthly gross, subtract estimated taxes (~15–20%), then subtract commute costs.