QB Issue Resolution:

IRS Form 941 is used to submit payroll taxes paid by employee and employer, so first need to know who overpaid to determine who gets refund, employee or employer.  Most likely was employer if refund check came to company.  A refund for anything should always be posted to same account where expense was originally posted.  Assuming you have an account for payroll taxes, I suggest post it there.  You don’t want to post as new income since then you owe taxes on that as income. Don’t want to post to liability account since that is amount you owe to tax agencies so it will cause you to underpay next time.

Resolution for Issue 'Posting 941 refund' available: Yes (Solved).
Source: Intuit Community forum.

Posting 941 refund: 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.

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