Self-employed is different, not harder

What documents will I actually need?

It depends on you, which is not a dodge. For a self-employed borrower that usually means personal and business tax returns, sometimes year-to-date figures or bank statements, and the papers that show how the business is set up. Which of those apply depends on how the business is organized and how long it has run.

And whatever we end up needing most on a given day is usually the one document nobody has ready, because it is something you have not had to look at in years. That is completely normal and it is not a problem.

Why business income and qualifying income are not the same number

This is the part worth understanding early, because it is where expectations and reality most often separate.

What your business earns and what can be used to qualify for a mortgage are reviewed differently. That is not a judgment about your business. It is how the review works, and it is the reason a self-employed file has more pieces to it.

The practical consequence is that guessing at your own number, or using an online calculator built around a regular paycheck, will usually give you the wrong picture. It is worth having somebody look at the real documents before you build a plan on an estimate.