How to Add a New Product/Service Product/Service Name: Enter the product or service name. Price: Add the price. Expense Category: Choose the relevant category (e.g., Office Supplies). Sales Details: Sales Price: Enter sales price. Sales Tax: Add tax rate if applicable. Purchase Details: Purchase Price: Enter the cost price. Supplier/Vendor: Add the supplier’s name. Product Details: Description: Enter a detailed description. SKU/ID: Add the product code or identifier. Quantity in Stock: Enter current stock level. Reorder Level: Specify reorder threshold.