Free Financial Tool
Side Hustle
Income Calculator
Find out how much your side hustle could actually earn after self-employment tax, expenses, and the opportunity cost of your time. Pick a category, enter your hours, and see the real numbers.
Pick a Side Hustle Category
Your Numbers
What you charge per hour (or average effective rate)
How many hours you can dedicate per week
Accounting for vacations and breaks
Monthly Expenses (Deductible)
Monthly Take-Home
$1,694
After tax & expenses
Annual Take-Home
$20,328
48 weeks at 10 hrs/wk
Self-Employment Tax
$3,672
15.3% of net earnings
Effective Hourly Rate
$42.35
After all deductions
Annual Income Breakdown
Full Breakdown
Every dollar accounted for
| Line Item | Monthly | Annual |
|---|---|---|
| Gross Income | $2,000.00 | $24,000.00 |
| − Expenses | ($0.00) | ($0.00) |
| Taxable Income | $2,000.00 | $24,000.00 |
| − SE Tax (15.3%) | ($306.00) | ($3,672.00) |
| Net Take-Home | $1,694.00 | $20,328.00 |
Rate Comparison by Category
Typical hourly ranges (your rate: $50/hr)
Opportunity Cost: Side Hustle vs. Investing
If you invested your net side hustle income ($20,328/yr) at 7% real return instead, here is what you would accumulate:
5 Years
$125,084
10 Years
$300,521
20 Years
$891,691
That is $480 hours per year. Your time has compounding value too.
Key Insight
Your effective rate of $42.35/hr is 85% of your gross rate -- you are keeping most of what you earn. Low expenses are the key to maximizing side hustle income.
Get Glen's Musings
Occasional thoughts on AI, Claude, investing, and building things. Free. No spam.
Unsubscribe anytime. I respect your inbox more than Congress respects property rights.
Recommended Resources
Tools & books I actually use and recommend
The Psychology of Money
Morgan Housel on why managing money is about behavior, not intelligence. Short, brilliant chapters you'll re-read.
View on AmazonThe Little Book of Common Sense Investing
John Bogle's manifesto on why low-cost index funds beat everything else. Straight from the founder of Vanguard.
View on AmazonTradingView
Best charting platform out there. Real-time data, screeners, and a community of millions of traders.
Try TradingViewSome links above are affiliate links. I only recommend products I personally use. See my full disclosures.
The Complete Guide to Side Hustle Income
Side hustles have gone from niche to mainstream. According to Bankrate, 39% of American adults had a side hustle in 2025, up from 27% in 2019. The gig economy, remote work, and creator-friendly platforms have made it easier than ever to turn spare hours into real income. But most people dramatically overestimate what they will actually take home. Taxes, expenses, and time costs eat into gross earnings more than you expect.
This calculator exists because the most common mistake side hustlers make is looking at gross income and assuming that is what they keep. It is not. Once you subtract self-employment tax (15.3%), deductible expenses, and the regular income tax on top of that, a $50/hr gig might net you $35/hr. Still good -- but you need to know the real number to make smart decisions about your time.
The Self-Employment Tax: The Hidden 15.3%
When you work a W-2 job, your employer pays half of your Social Security and Medicare taxes (7.65%), and the other half is deducted from your paycheck. When you are self-employed, you pay both halves -- the full 15.3%. This is broken down as 12.4% for Social Security (up to the wage base of $168,600 in 2025) and 2.9% for Medicare (no cap).
SE Tax = Net Earnings × 15.3%
The silver lining: you can deduct the employer-equivalent half (7.65%) from your adjusted gross income. And you can reduce your SE tax base by deducting legitimate business expenses before calculating it. This is why tracking every deductible expense matters.
Maximizing Your Effective Hourly Rate
The metric that matters most is not your gross hourly rate -- it is your effective hourly rate after all costs. Here is how the math works for a freelance web developer charging $75/hr:
| Gross rate | $75.00/hr | What you charge |
| Unbillable hours (admin, marketing) | -$15.00/hr | ~20% overhead |
| Software & tools | -$2.50/hr | ~$100/mo spread across hours |
| Self-employment tax | -$8.80/hr | 15.3% of net |
| Effective rate | $48.70/hr | What you actually keep |
That $75/hr freelancer is really earning $48.70/hr. Still excellent, but 35% less than the headline number. Every side hustler should know their effective rate. It is the number that tells you whether your time is well spent.
Side Hustle Category Deep Dive
Freelance Writing
$25–$75/hrBlog posts, copywriting, technical writing, ghostwriting. Typical effective rate after taxes and expenses: $19–$56/hr. Best for people who write well and can meet deadlines. Start on platforms like Upwork or Contently, then move to direct clients.
Web Development
$50–$150/hrWebsites, web apps, WordPress, Shopify, custom builds. Typical effective rate after taxes and expenses: $38–$113/hr. Best for people who know HTML/CSS/JS or a framework like React. Local businesses, startups, and agencies always need help.
Tutoring
$30–$80/hrMath, science, test prep, music, language instruction. Typical effective rate after taxes and expenses: $23–$60/hr. Best for people who have expertise in a subject and patience to teach. Online tutoring platforms have exploded since 2020.
Rideshare Driving
$15–$25/hrUber, Lyft, and similar ride-hailing platforms. Typical effective rate after taxes and expenses: $11–$19/hr. Best for people who have a reliable car and flexible schedule. Peak hours (Friday/Saturday nights) pay 40-60% more.
Delivery
$12–$20/hrDoorDash, Instacart, Amazon Flex, food and grocery delivery. Typical effective rate after taxes and expenses: $9–$15/hr. Best for people who want maximum flexibility. You can start and stop whenever you want with most delivery apps.
Consulting
$75–$200/hrStrategy, marketing, finance, IT, business consulting. Typical effective rate after taxes and expenses: $56–$150/hr. Best for people who have industry expertise others will pay for. Even 5 years of experience in one field is enough to consult.
The Opportunity Cost Question
Every hour you spend on a side hustle is an hour you could spend doing something else: resting, learning a new skill, building relationships, or investing. The calculator above includes an opportunity cost section that shows what would happen if you invested your side hustle income at a 7% real return. This is not to discourage side hustling -- it is to help you think about the long game.
The smartest approach is often to side hustle intensely for 1-3 years, bank as much as possible, and invest the proceeds. That combination of active income generation plus compound investing is how ordinary people build extraordinary wealth. The side hustle generates the seed capital; the investments multiply it.
Frequently Asked Questions
Do I have to pay self-employment tax on side hustle income?
Yes. If you earn $400 or more from self-employment in a year, you owe self-employment tax of 15.3% (12.4% Social Security + 2.9% Medicare). This is in addition to regular income tax. You can deduct the employer-equivalent half (7.65%) when calculating your adjusted gross income, but the full 15.3% is applied to your net self-employment earnings.
What expenses can I deduct from my side hustle income?
Common deductible expenses include equipment and supplies, software subscriptions, vehicle mileage (67 cents/mile for 2024), home office space, internet and phone bills (business portion), marketing costs, professional development, and health insurance premiums. Keep receipts and records for everything. These deductions reduce your taxable income dollar-for-dollar.
How many hours per week should I dedicate to a side hustle?
Most successful side hustlers start with 5-15 hours per week. Going above 20 hours risks burnout, especially if you have a full-time job. The sweet spot depends on your energy levels, family obligations, and goals. Start small, track your earnings per hour, and scale up only if the effective hourly rate justifies the time investment.
Which side hustle pays the most per hour?
Consulting and specialized freelancing (web development, copywriting, design) consistently offer the highest hourly rates, typically $50-200/hr depending on expertise. Rideshare and delivery tend to pay $12-25/hr before expenses. The key variable is your existing skills. A software engineer freelancing on the side will earn far more per hour than starting a completely new skill from scratch.
Should I side hustle or invest my free time differently?
It depends on your effective hourly rate and opportunity cost. If your side hustle nets $15/hr after taxes and expenses, and you could instead spend that time learning a skill that increases your full-time salary by $10,000/year, the skill investment wins. Use this calculator to compare. Side hustles are most valuable when they either pay well immediately or build toward a scalable business.
Do I need to make quarterly estimated tax payments?
If you expect to owe $1,000 or more in taxes for the year (including self-employment tax), the IRS expects quarterly estimated payments. Due dates are April 15, June 15, September 15, and January 15. Missing these deadlines can result in underpayment penalties. Use IRS Form 1040-ES to calculate your quarterly payments.
Know Your Numbers Before You Start
The difference between a profitable side hustle and a waste of time is knowing your effective hourly rate. Scroll up, plug in your numbers, and make sure the math works before you commit your hours.
Keep Building Income
Top 25 Side Hustles
The best side hustles ranked by income potential, flexibility, and startup cost. Real data, no fluff.
Read moreGuidePassive Income Ideas
Build income streams that work while you sleep. Dividends, digital products, rental income, and more.
Read moreBest Budgeting Apps
Track your side hustle income alongside your main job. The best apps for managing multiple income streams.
Read moreCompound Interest Calculator
See what happens when you invest your side hustle earnings. The math is staggering over 10-20 years.
Read more