An attempt has been taken to compare economic performance of different ages of keora (Sonneratia apetala) Plantations in coastal zone in this paper. The main objective was to find out financial rotation and profitability of keora plantation. The existing market price of round wood per cubic meter and fuel wood per ton were found to be Tk. 2650 to Tk. 3530 and Tk. 670 to Tk. 940 respectively near plantation area in 2003. The harvesting and processing costs were estimated as 20% and 10% of the standing value of the trees. The value of IRR and other economic determinants for timber were varied among Coastal Afforestation Divisions mainly due to different rates of siltation, salinity and other factors involved on the forest floor in coastal zone. However, applying the economic determinants throughout coastal zone, financially remarkable rotation age for timber was found to be within 14th to 16th year of plantation and rotation age forfuel wood as 9th year of plantation. Applying the same economic determinants keora plantation was also found as profitable in coastal zone in Bangladesh.