An income statement, also known as a profit and loss statement, shows the revenues and expenses of a business over a specific period of time. To prepare an income statement from transactions, you can follow these steps:

1. Gather all relevant financial transactions: Collect all financial transactions of the business for the period for which you want to prepare the income statement. This includes all revenue, expenses, and any other financial activities that occurred during that time.
2. Categorize the transactions: Sort the transactions into different categories such as revenue, cost of goods sold, operating expenses, and other income or expenses.
3. Calculate revenue: Add up all the income earned during the period. This includes sales revenue, service revenue, and any other income.
4. Calculate cost of goods sold: If your business sells goods, you need to calculate the cost of goods sold (COGS). COGS is the cost of the products or services sold during the period. You can calculate COGS by subtracting the beginning inventory from the ending inventory and adding any additional costs of goods purchased during the period.
5. Calculate gross profit: Gross profit is calculated by subtracting the COGS from the revenue.
6. Calculate operating expenses: Operating expenses are the costs incurred to operate the business, such as rent, salaries, utilities, and marketing expenses. Add up all the operating expenses for the period.
7. Calculate operating income: Operating income is calculated by subtracting the total operating expenses from the gross profit.
8. Calculate other income or expenses: Other income or expenses include items such as interest income or expenses, gains or losses from the sale of assets, and any other income or expenses that do not fall under revenue or operating expenses.
9. Calculate net income: Net income is calculated by adding operating income and other income, and subtracting any other expenses. This is the final number on the income statement, and it shows the overall profitability of the business for the period.

Once you have completed these steps, you will have a complete income statement that shows the revenues, expenses, and profitability of the business for the period.