Some states require you continually renew LLC status, and the LLC doesn't just disappear if you stop paying the yearly fees (you actually need to file another form to dissolve the LLC (and send more $ to do so)).
Not sure why to be a LLC if not taking in revenue, unless the revenue's coming later. If that's the case, he/she should still consider taking deductions (and end up as a business loss for the year) to reduce taxable income.
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