Does a Notice to Schedule (NTS) expire and should I apply to sit for all 4 sections of the CPA Exam before it expires?

Yes, the Notice to Schedule (NTS) expires. It is valid for 90 days to 9 months, depending on your jurisdiction, and will state the earliest and latest date you can sit for each section of the exam you applied to take.

Although you can apply for all 4 sections of the CPA exam in one NTS, it is recommended to only apply for the parts of the CPA exam you are ready to take.