El Valor agregado o valor añadido es un concepto utilizado en economía, finanzas y contabilidad con dos significados diferentes. Desde el punto de vista contable, es la diferencia entre el importe de las ventas y el de las compras, es decir, la diferencia entre los precios de mercado y costos de producción. A nivel empresarial de análisis de coste-beneficio, significa la diferencia entre el ingreso de una empresa y los costos de materia prima, el capital fijo y variable. (ver Finanzas Corporativas). En términos económicos, el valor agregado es el valor económico adicional que adquieren los bienes y servicios al ser transformados durante el proceso productivo. En otras palabras, el valor económico que un determinado proceso productivo añade al que suponen las materias primas utilizadas en su producción. El cálculo en términos de valor se usa en algunos cálculos de coste-beneficio, eficiencia económica, productividad, etc El valor agregado constituye la base para el IVA (Impuesto al valor agregado).

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In business, the difference between the sale price and the production cost of a product is the unit profit. In economics, the sum of the unit profit, the unit depreciation cost, and the unit labor cost is the unit value added. Summing value added per unit over all units sold is total value added. Total value added is equivalent to revenue less intermediate consumption. Value added is a higher portion of revenue for integrated companies, e.g., manufacturing companies, and a lower portion of revenue for less integrated companies, e.g., retail companies. Total value added is very closely approximated by compensation of employees plus earnings before taxes. The first component is a return to labor and the second component is a return to capital. In national accounts used in macroeconomics, it refers to the contribution of the factors of production, i.e., capital (e.g., land and capital goods) and labor, to raising the value of a product and corresponds to the incomes received by the owners of these factors. The national value added is shared between capital and labor (as the factors of production), and this sharing gives rise to issues of distribution. Outside of economics, value added refers to "extra" feature(s) of an item of interest (product, service, person etc.) that go beyond the standard expectations and provide something "more", even if the cost is higher to the client or purchasor. Value-added features give competitive edges to companies with otherwise more expensive products. Value-added methods and measurements are also being utilized in education as part of a national movement towards teacher evaluation and accountability in the United States. This type of measure is known as a value added modeling or measures

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