As mentioned in Chap. 3 , all medical device Sponsors have an obligation to read and understand the regulations and guidances that apply to their product. Being a conscientious Sponsor, you have read and followed all the “rules” and even chatted with the FDA routinely and applied their feedback. You have data … tons of data. Now what? The most exciting (and rigorous) part of your journey is about to begin—your submission. The first thing covered in this chapter is what data the FDA requires in your submission packageSubmission package. The type of data you include in your submission packageSubmission package is dependent upon your device class/type and any special regulations for your device and its intended use. Next, labeling is discussed—what you can say and how to say it best so that your intended users understand. Unfortunately, there are fees associated with many regulatory submissions, and in order to keep you from being surprised, Chap. 4 concludes with a section covering the financial side of your submission.