Kencur is a medicinal plant of high economic value, yet its productivity and postharvest quality remain low due to limited cultivation techniques and short rhizome shelf life. This study aimed to determine the effect of combined applications of NAA (Naphthaleneacetic Acid) and BA (Benzyladenine) on rhizome yield and shelf life at two harvest ages. The experiment was conducted at the Agro Techno Park Experimental Garden, Brawijaya University, using a factorial randomized block design (RBD) with three NAA concentrations (10, 20, 30 ppm) and four BA concentrations (0, 10, 20, 30 ppm), resulting in 12 treatment combinations replicated three times. Observed parameters included fresh rhizome weight at harvest ages of 6 and 8 months after planting (MAP), and weight loss during storage up to 30 days after harvest (DAH). Results showed that the interaction of NAA and BA significantly influenced rhizome weight and weight loss during storage. The combination of NAA 30 ppm + BA 30 ppm produced the highest weight, 60.32 g/plant at 6 MAP and 100.9 g/plant at 8 MAP. Moreover, the high-dose combination suppressed weight loss, maintaining 87.73% of initial weight (6 MAP) and 93.25% (8 MAP) at 30 DAH. Harvesting at 8 MAP was more optimal than at 6 MAP, as it yielded larger rhizomes with better storability.