A grant application’s appendices are where you put all the supplemental materials you want to include that won’t count against the page limit. Some examples include: Audited financial statements; IRS determination letter (for nonprofits); Indirect Cost Rate agreement (if you have one); Resumes; Evaluation tools; And so on. These are just examples. Every application is different. Only include documents specifically requested by the funder. Adding a bunch of items that aren’t requested does more harm than good. Stick to what the Notice Of Funding Opportunity allows.