681x

The code most commonly refers to Form 941-X , which is used by employers to correct errors on a previously filed Form 941 (Employer's Quarterly Federal Tax Return). Report on Form 941-X (681x)

: Generally must be filed within 3 years of the date the original return was filed or 2 years from the date the tax was paid, whichever is later. The code most commonly refers to Form 941-X

Accurate records of these reports must be maintained for at least (or 5 years in specific cases like HEAL loans) for inspection and audit purposes. The code most commonly refers to Form 941-X