How to invoice the expenses incurred in debugging?

You need to go to the tax bureau to open it yourself.

Or if it happens frequently, you can go to the local industrial and commercial bureau to expand the scope and then invoice, and you can take other business income, and the corresponding costs can be accounted for by other business costs.

(1) New product design fees, process design fees, equipment adjustment fees, test fees for raw materials, semi-finished products and finished products, and purchase fees for samples, prototypes and general test methods for trial production of new products are included in enterprise management fees, and are included in the cost of various products produced by the whole factory by adopting appropriate distribution methods. (2) raw materials, wages and expenses (including special tools and fixtures, shared workshop expenses and enterprise management fees) consumed in the trial production of new products shall be included in the cost of new products. If the special fixture costs a lot, it can be used as prepaid expenses and spread into the production cost of small batch trial production or post-production in stages.