You do not need to file Form 1045 to carryforward an NOL to a subsequent tax year. Form 1045 only must be used for carryback to a prior tax year.
In order to carry forward a NOL, you would have to have filed a statement waiving the carryback period on your original return or on an amended return within 6 months of the due date of the return (excluding extensions). So, your 2015 tax return must include a statement that you are waiving the carryback period.
When you carry forward your NOL to a tax year after the NOL year, you will list your NOL deduction as a negative figure on the “Other income” line of Form 1040. You must attach a statement that shows all the important facts about the NOL. Your statement should include a computation showing how you figured the NOL deduction. If you deduct more than one NOL in the same year, your statement must cover each of them.
Form 1045 Schedule A is used to calculate the Net Operating Loss (NOL). While you do not need to file Form 1045, you may want to complete it so you have captured all of the important facts about the NOL.