There are all sorts of reasons why someone might need an affidavit. They can be used in contract negotiations, help settle the estate of someone who dies with no will, assert a person’s legal name change, and much more. An affidavit is a sworn, notarized statement and providing incorrect information in one can be considered perjury. Since the document is so important, it must be prepared with utmost care. How do you do it? Here’s a step by step process.