If you were to modify the calculator to account for this, the fixed costs should be deducted from salary and divided among all the hours worked?
So if you made $40,000 a year and had $10,000 in fixed costs, you deduct taxes & whatnot, the $10k, and then divide by 2000 hours. This gives you a true "net income after expenses" per hour. Yes?
Sure, but as someone on salary I tend to find disposable income and then calculate that spread evenly over time. AKA I have 1,000$ this month to spend however I like that's 1000/31 = 32$ a day or 1.30$ an hour.
I do this because I can't work more hours to make up for extra spending I can only wait till more money shows up.
So if you made $40,000 a year and had $10,000 in fixed costs, you deduct taxes & whatnot, the $10k, and then divide by 2000 hours. This gives you a true "net income after expenses" per hour. Yes?