A post-closing trial balance is required to be prepared:

Step 1: Understand the Purpose of a Post-Closing Trial Balance

A post-closing trial balance is prepared at the end of an accounting period after all closing entries have been made. The purpose of this trial balance is to ensure that all debits and credits balance out, which means the company's accounts are in balance and ready for the next accounting period.

Step 2: Identify the Accounts to Include

A post-closing trial balance includes all the balance sheet accounts, i.e., assets, liabilities, and equity accounts. It does not include income statement accounts such as revenues, expenses, gains, or losses as these accounts have been closed and their balances transferred to the retained earnings account.

Step 3: Prepare the Post-Closing Trial Balance

To prepare a post-closing trial balance, list down all the balance sheet accounts with their final balances after the closing entries. Then, total the debit and credit columns. The total of the debit column should equal the total of the credit column.

Step 4: Review the Post-Closing Trial Balance

Review the post-closing trial balance to ensure that all accounts are correctly listed and that the total debits equal the total credits. If they do not equal, there may be an error in the closing entries or the post-closing trial balance itself.

Step 5: Use the Post-Closing Trial Balance

The post-closing trial balance is used as a starting point for the next accounting period. It ensures that the company's books are in balance before the new accounting period begins.