Side Hustles & Income
Realistic side income ideas, tax implications, and how to grow a side hustle to full-time
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Common Questions
What is the difference between gross and net income?
Gross income is your total earnings before any deductions — the salary number in your job offer letter. Net income (take-home pay) is what actually hits your bank account after federal and state income taxes, Social Security and Medicare (FICA), health insurance premiums, and 401k contributions are withheld. All budgeting should be based on net income, not gross, since you cannot spend money you never receive.
How do income tax brackets work?
The U.S. uses a progressive tax system where different portions of your income are taxed at different rates. In 2026, the brackets are 10%, 12%, 22%, 24%, 32%, 35%, and 37%. A common misconception: earning more does NOT mean all your income gets taxed at the higher rate. Only the income above each threshold is taxed at the higher rate. Your "effective" (average) tax rate is always lower than your "marginal" (top bracket) rate.
Key Terms
Debt-to-Income Ratio (DTI)
Monthly debt payments divided by gross monthly income. Lenders use DTI to assess borrowing capacity. Under 36% is healthy; 36-43% is acceptable for most mortgages; above 43% limits loan options. Reducing DTI before applying for a mortgage can save thousands in interest over the loan term.
Debt-to-Income Ratio (DTI)
Monthly debt payments divided by gross monthly income, expressed as a percentage. Lenders use DTI to assess loan affordability; most mortgage lenders prefer a back-end DTI below 43%.
Income-Driven Repayment (IDR)
Federal student loan repayment plans that cap monthly payments at a percentage of discretionary income. IDR plans extend the repayment term and lead to forgiveness of any remaining balance after 20-25 years.