Merchandise planning and assortment planning are two closely related but distinct functions in retail buying and merchandising. Both are essential for ensuring that the right products are available to customers at the right time, in the right quantity, at the right price, and in the right retail locations. However, merchandise planning is broader and focuses on the overall financial and commercial performance of a merchandise category or business, whereas assortment planning concentrates specifically on deciding which products, styles, variants, sizes, colours, brands, and options should form the product range offered to customers. Merchandise planning is a systematic process of forecasting sales, managing inventory, setting financial targets, planning purchases, and controlling profitability. It provides a financial and strategic framework for retail merchandise decisions. A merchandise planner studies historical sales, current market trends, customer demand, seasonality, promotional plans, stock levels, and business objectives to prepare a merchandise plan. The plan generally includes sales targets, inventory levels, purchases, markdowns, gross margin, and stock turnover. The objective is to achieve the desired sales and profit while maintaining an appropriate level of inventory. In Buying and Merchandising-I, merchandise planning can be understood as the process that connects business objectives with merchandise decisions. For example, if a fashion retailer expects strong demand during the festive season, the merchandise planner estimates the expected sales, determines the inventory investment required, considers the timing of deliveries, and establishes targets for gross margin and stock turnover. The buyer and merchandise team then use these financial and quantitative guidelines to source appropriate products. Merchandise planning generally begins with an analysis of past performance. Historical data helps retailers understand sales patterns, best-selling categories, slow-moving products, seasonal variations, price performance, and customer preferences. However, past performance alone is not sufficient. A planner must also consider changes in fashion, economic conditions, competitors, consumer lifestyles, store expansion, digital commerce, and promotional activities. Based on these factors, sales and inventory forecasts are prepared. One important component of merchandise planning is the sales plan. The retailer estimates how much it expects to sell during a particular period. This may be prepared by month, season, category, department, store, channel, or product group. The sales plan becomes a benchmark against which actual performance can be measured. Inventory planning is then carried out to determine how much stock should be available to support the expected sales. Excess inventory increases carrying costs and the risk of markdowns, while insufficient inventory can lead to stock-outs and lost sales. Purchase planning is another important element. After estimating sales and inventory requirements, the retailer determines how much merchandise needs to be