This current research aimed to investigate the value added of RTD Prebiotic Candidate Milk which is enriched by xylose as a prebiotic candidate. Xylose is a pentose sugar with functional properties as an anti-diabetic agent by repairing pancreatic cells. Its sweetness level is as sweet as sucrose. The study was designed descriptively and the Hayami and Kawagoe method was used to analyze the value-added of RTD prebiotic candidate milk. The study showed that raw milk processing into RTD prebiotic candidate milk gave 25,644 IDR/kg value added to its raw milk with a value-added ratio of 32.82%. The result was higher than processing it without xylose as prebiotic-added which only gave the added value of 3,141 IDR/kg with a value-added ratio of 7.44%. The profit would be earned was 24,993 IDR/kg with a profit rate of 97.46%. Based on the added value and profit gained, xylose as prebiotic addition to RTD Milk formulation is feasible to be developed because it provides benefits for business owners. The business owner's profit would be owned was 51.74% of the product sales profit.