Side Hustle ROI Calculator
Two side hustles can earn the same monthly profit and still be very different deals. One might cost little and take few hours. The other might tie up cash and eat your weekends.
Last updated June 2, 2026
This calculator turns startup cost, profit, and hours into return on investment, payback time, and profit per hour so you can compare the real trade-offs.
Your numbers
Example values are shown so you can see how it works. Replace them with your own.
- Annual profit$4,800
- Return on investment600%
- Payback period2 months
- Profit per hour$10.00/hr
Return on investment rewards low startup cost, profit per hour rewards efficient work, and payback measures risk. A good side hustle does well on at least two of the three.
Estimates only, based on the numbers you enter. Nothing is saved to the page address. Tax figures are rough planning numbers, not filing advice.
Assumptions this calculator makes
- Return on investment uses annual profit divided by startup cost.
- Profit is assumed steady across the year.
- Profit per hour uses total hours, including unpaid time.
- Risk level is your own judgment and does not change the math, only the read.
This is an estimate, not advice
Every result here is a rough model based only on the numbers you enter. Sidequity is an informational tool and does not provide professional, tax, legal, investment, or financial advice, and it makes no income guarantees. Any tax set-aside is a planning placeholder, not a tax calculation.
For decisions that affect your money, taxes, or business, review your situation with a qualified professional. See our full disclaimer.
How to use it
- Enter the cash you must spend up front and your repeatable monthly profit.
- Add the total hours per month the work really takes.
- Rate the risk from 1 to 3 based on how reliable the income is.
What this number means
High ROI with low hours is the best case. Low profit per hour is the most common dealbreaker.
Use this to compare ideas, not to predict exact returns.
Common mistakes
- Comparing ideas on monthly profit alone and ignoring hours.
- Treating a risky income stream as if it were guaranteed.
- Leaving unpaid hours out of the hours figure.
- Chasing scale before the per-hour math works.
Frequently asked questions
What is a good ROI for a side hustle?
There is no fixed rule, but recovering your startup cost within several months and earning a solid profit per hour matters more than a headline ROI percentage.
Why does profit per hour matter so much?
Because your time is the scarce resource. A high ROI on a tiny investment can still be a bad use of hours if the profit per hour is low.
How should risk change my decision?
Higher risk should demand a higher return. If a risky idea pays the same per hour as a safe one, the safe one usually wins.
Is this a guarantee of returns?
No. It is a planning estimate based on your inputs. Real results vary, so use conservative numbers.
Side Hustle ROI Calculator last updated June 2, 2026. Back to all calculators.