The types facet of Biodegradable Plastic market taxonomy classifies polymers into five core families: Starch‑based, Polylactic Acid (PLA), Polyhydroxyalkanoates (PHA), Polybutylene Succinate (PBS), and Blends/Composites. Starch‑based plastics, derived from corn, potato, or tapioca, represent the most cost‑effective option, supplying roughly 30 % of the market, primarily for low‑value packaging due to their limited barrier properties. PLA, produced from fermented sugars, holds the largest share at about 35 % because of its superior mechanical strength, transparency, and compatibility with existing processing equipment, making it suitable for both packaging and consumer‑goods applications. PHA contributes near 15 % and is distinguished by its true biodegradability in marine environments, attracting niche uses in agriculture and medical devices. PBS accounts for roughly 10 % and offers a balanced combination of flexibility and heat resistance, supporting applications in food‑service items. Finally, Blends/Composites—often combining PLA with natural fibers or additives—fill the remaining 10 %, enabling performance tuning across diverse sectors. This type‑level breakdown underpins the overall Biodegradable Plastic segmentation by linking material characteristics to market demand.