define net marketing contribution
Thinkstock/Comstock/Getty Images. Net marketing contribution (NMC) is a calculation that determines whether a company's current marketing strategy is enough to cover the costs associated with marketing and sales.The current market demand and your company's market share are important aspects of the NMC calculation.he marketing expenses are any budgeted amount for marketing costs, surplus, manufacturing costs, machine cost and machine overhead. The marketing expenses for the example company are $5,000. Subtract $5,000 from $48,050 to get $43,050. This is your net market contribution.