IATI is an XML standard that has been developed to capture details on aid projects: including locations, budgets, organisations involved, sectors targeted, transactions and spending, associated documents, and results. 

I've had a number of conversations recently that have involved looking at whether the IATI standard could provide a framework for:

• (a) Recording country budget data
• (b) Recording domestic philanthropy

The advantage of (a) would be making country budgets and resource allocations comparable/combinable with IATI data. The advantage of (b) would be that organisations that deal in both domestic and international funding had only one standard; and that tools developed to work with IATI data could also work with domestic philanthropy data.

Both these use-cases would probably require some adaptation of the standard to do things like:

• Change the root element (mainly a cosmetic change - but it might not make sense to have a domestic philanthropy project as an iati-activity, or with an iati-identifier)
• Change which elements are required or not (e.g. tied-status might not make sense, or might need to be re-interpreted for other contexts)
• Put forward some alternate code-lists