Retrospective bonus – an additional product or service that the customer receives when concluding a contract, paying an invoice and fulfilling certain conditions as part of the contract. If the supplier sells non-food products, he can indicate in the agreement with the buyer whether or not the retro bonus influences the final price of the product. When calculating retro bonuses, you need to take into account some subtleties: Starlight calculates Intershift`s retro bonus on the basis of annual turnover: the rules for invoicing retro bonuses by the buyer and supplier were explained by the Ministry of Finance in letter No. 03-03-06 / 1/29540 of 22.05.2015 using an example when products were shipped during a period. And the bonuses were run in another. .