I am extremely new to IIF files. I've watched as many YouTube videos as I could find and have looked through QB Help. I downloaded the ToolKit and and have read through it. I used one of the templates to add a few journal entries, created a test company, and uploaded the IIF file. However, I'm just looking for something that explains the coding better. I know there are header files and such in the toolkit, but they aren't very explanatory or detailed. Has anyone found anything that really breaks down the IIF file and how it's created and why certain headers are used, etc.?