QB Issue Resolution:

how did you write off the bad debt?

typically it done with a credit memo, the CM is applied to the invoice “paying” it

then the income show as well as the write off, a zero sum total which does not affect the bottom line

Resolution for Issue 'Charge off on Cash basis stmt. Shows up as expense on P&L Where is the offset?' available: Yes (Solved).
Source: Intuit Community forum.

Charge off on Cash basis stmt. Shows up as expense on P&L Where is the offset?: this issue or error code is a known issue in Quickbooks Online (QBO) and/or Quickbooks. Support for this issue is available either by self-service or paid support options. Experts are available to resolve your Quickbooks issue to ensure minimal downtime and continue running your business. First try to resolve the issue yourself by looking for a resolution described below. If it is a complex issue or you are unable to solve the issue, you may contact us by clicking here or by using other support options.

Support for Credit Memo
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