For the past few months I have been working with two other guys on a feasibility project and as I have an established company I have been passing some of the invoices through ROL and for these I have been paid in cash.
A new Thai Company will be formed by the investors that is separate from me and they now want to process as many of these invoices as part of the start up costs.
I think you should split the expense of the old and new company. The expense of the new company should only be within the company. If you need to use Reail's money, the money should be state as a loan money and with a clear documentation. Because if the invoice is from Retail it would affect both the income and the VAT. That would make Retail's income higher and there will be more tax and VAT to be paid at the end of the year.