How Did you know if you must fill out a 1099 form? Assuming that you're speaking about 1099-MISC. Observe there are other 1099s.Check out this write-up - Sort 1099 MISC Policies & RegulationsQuick response - A Kind 1099 MISC must be submitted for Everyone to whom payment is made from:$600 or more for services carried out for the trade or organizati