Let's do some math first. 1.5 months of work sold for 10K. That's 1/6th of your current salary. Let's say your current salary is X. So the equation becomes:

Let's do some math first. 1.5 months of work sold for 10K. That's 1/6th of your current salary. Let's say your current salary is X. So the equation becomes: 1/6 * currentSalary = 10,000. currentSalary = 60,000 With a 20% cut, your current salary would reduce to 60,000 * 0.8 = 48,000 So with the pay cut, you need to make at least 12,000 to break even. Let's assume you only work 1 day a week on your side project. You made 10K from the 1st side project. So the question really is can you make that additional 12K with this additional 1 day you have ? I would say Why not. You made 10K when you worked full time. Now you have another full day available to work on your own thing. So I would say you should definitely aim for making 12K (break even) + additional. Without Math btw, I would anyway go for it.