What Is a Side Hustle?
A side hustle is paid work done in addition to a primary job, such as freelancing, tutoring, reselling, driving for a delivery app, or selling crafts online. It can provide extra income, build skills, or test a business idea. Income from a side hustle is generally taxable.
Taxes
In the US, side-hustle earnings are usually self-employment income, subject to income tax and self-employment tax, and may require estimated tax payments.
Is It Worth It?
Dividing net earnings (after costs, fees, and taxes) by hours worked gives a real hourly rate to compare.
🧮 Calculate It Yourself
Put Side Hustle into practice with these free calculators — no sign-up, nothing stored.
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Freelance Hourly Rate Calculator
Find the hourly rate you actually need to charge — it's not salary ÷ hours.
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Self-Employment Tax Calculator
Estimate your Social Security and Medicare tax as a freelancer (2026 rates).
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Online Seller Fee & Profit Calculator
See exactly what Etsy, eBay, or Amazon take — and what you keep.
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🔗 Related Terms
More Income & Work Terms
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Last updated: September 29, 2026. This definition is for general educational purposes only. It is not financial, investment, tax, legal, or medical advice, and it does not recommend any product or course of action. For decisions about your own situation, consult a qualified professional.