Hi all, I just finished up a patio and walkway for a customer in NY. I estimated the job along with the sales tax in the price. Customer came back to me and said for this type of work there was no need for sales tax, which i agreed as long as the st-124 form was given to me. Long story short, i continued and finished the job, received payments, but never received the capital improvement form. When i mentioned to the homeowner i need the form or else i have to pay the taxes on his payments, he refused to provide it to me. Has anyone ever had this happen to them. Whats the best route to go with this situation. Clearly i don't want to pay $800 and change in taxes on something i should not have to pay. Can i report this to the state and make it their problem?