How Did you know if you must complete a 1099 form? Assuming that you're speaking about 1099-MISC. Take note that there are other 1099s.Test this put up - Type 1099 MISC Policies & RegulationsQuick reply - A Kind 1099 MISC must be filed for All and sundry to whom payment is made from:$600 or even more for solutions executed for the trade or company