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Level 15
Level 15

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Codes 485310 and 485320 are not in the IRS list of principal business codes in the instructions for Schedule C. The code on Schedule C is supposed to come from the list in the Schedule C instructions, not from other lists of business classification codes.

The IRS instructions for Schedule C say "Enter on line B the six-digit code from the Principal Business or Professional Activity Codes chart at the end of these instructions."