In business, probably always, as some type of business expense. On personal tax, probably never, unless you could possibly tie it to an investment or such...(and even that's always going to be a stretch).
You can contract a collection agency to recover it, or you can take it to the prosecutor's office and file criminal charges against the person who wrote it.Your best bet it to take it to collections....
Remeber that sales tax is a state by state tax so rules vary. Most states will require the same sales tax charged by nonprofits that is charged by for profits. Otherwise, the competition is not fair.
No. Check out the below URL, type CTRL +F and enter in "restructuring" in case you are skeptical. http://www.business.uconn.edu/users/smf/deferred_taxes.htm
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