The information related to trade discount includes the definition, purpose, calculation, and benefits of trade discounts. However, there is no specific information related to trade discount that does not belong to this category.

Definition of Trade Discount
A trade discount is a reduction in the selling price of goods or services provided by a business to its customers. It is a common practice in the business world to offer trade discounts to encourage bulk purchases, improve sales, attract new customers, and maintain customer loyalty.

Purpose of Trade Discount
The primary purpose of offering trade discounts is to stimulate sales and increase customer satisfaction. By providing a discounted price, businesses can attract more customers, encourage them to purchase larger quantities, and build long-term relationships. Trade discounts also help businesses compete in the market by offering more competitive prices than their competitors.

Calculation of Trade Discount
Trade discounts are usually expressed as a percentage of the list price or the published price of goods or services. The calculation of the trade discount is straightforward. It involves multiplying the list price by the trade discount rate. The resulting amount is the trade discount, which is then subtracted from the list price to determine the discounted selling price.

Benefits of Trade Discount
- Increased Sales: Trade discounts can incentivize customers to purchase more goods or services, leading to increased sales volume.
- Customer Loyalty: By offering trade discounts, businesses can build customer loyalty and encourage repeat purchases.
- Competitive Advantage: Trade discounts can help businesses gain a competitive advantage by offering lower prices than their competitors.
- Cash Flow Management: Trade discounts can help businesses manage their cash flow by encouraging prompt payment from customers.
- Inventory Management: By offering trade discounts, businesses can reduce their inventory levels by encouraging customers to purchase larger quantities.

In conclusion, all the information related to trade discount falls within the category of definition, purpose, calculation, and benefits. There is no specific information related to trade discount that does not belong to this category. Trade discounts play a crucial role in sales promotion, customer satisfaction, and overall business success.