To calculate profit in broiler poultry farming business, you need to know your revenue and all the business expenses. You then deduct the expenses from the revenue to get your profit. The revenue comes from selling the broiler chickens after they mature. The expenses include input costs like feed, day old chicks, and medication. Operational expenses should also be included like salaries and transport costs. Taking all these factors into consideration will give you the true profit of your poultry farming business. An advantage of the broiler poultry farming business plan is that it lays out all the revenues, expenses and profits of the business.