Child support calculation

I have been working hundreds of hours of overtime a year in order to keep our bills current, when calculating the child support would the court calculate on my gross pay with the overtime or would it consider that income that isn’t constant and relyable and calculate on my gross without the overtime?

Your income includes bonus pay, and that pay should be included in any support calculation. The court will likely use an average of your income, but may calculate support based on your base pay and order that any bonus pay received will be paid in the same percentage of child support as your regular income.