Start with gross pay, not guesswork
The cleanest way to calculate take-home pay is to begin with gross annual earnings from a realistic schedule. Use hourly rate x hours per week x weeks per year. If your schedule changes seasonally, calculate a weighted annual estimate instead of assuming 52 identical weeks.
This first step matters because every downstream tax estimate uses gross income as the base. If gross is inflated by unrealistic hours, your take-home projection will also be misleading.