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My chat titled "What are prepaid expenses?" is found in the tax section.
Following are two excerpts from the chat:
In QuickBooks®, write off an individual customer bad debt using the allowance method, use the "Credit Memo" button on your invoices or sales receipts ...
... be sure you have setup a bad debt item as an Other Charge in your item list (coded to the account bad debt allowance NOT bad debt expense if you are doing GAAP bookkeeping) ...
... and select the bad debt item when recording the credit memo.
Note: GAAP books bad debt using the bad debt allowance account. If you are doing your books on a tax basis, your Other Charge item would be coded to bad debt expense instead of bad debt allowance.
Most month end adjusting entries should be done using the proper QuickBooks® form rather than the manual journal entry if you want the entry to post and report properly.