How do you 1099 if you don't know their SSN's/addresses etc..
Anyone you pay needs to give you a W9 PRIOR to payment. The law does not say prior, but you loose leverage once you pay them. You need the W9 as backup for the 1099 you issue at the end of the year. The form is accessable thru the IRS site below. Likewise, if you get paid from a bar, club, ect. you should be giving the person hiring you a W9 and they should give you a 1099 at the end of the year. Fairure to do any of this can (and usually will) result in small fines ($50 per occurance I believe). Here is the W9 link.
http://www.irs.gov/pub/irs-pdf/fw9.pdf
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