W-2c Correction Intake Checklist for Payroll Teams

Identify the employer, employee, tax year, affected fields and date the issue was discovered. Retrieve the original submission and processing evidence. A rejected original wage file may require resubmission under SSA's notice, while an error on a processed report is a correction case. A draft that was never filed needs a different release decision.

The IRS W-2c instructions also distinguish employee address-only changes and state-only changes from corrections sent to SSA. Put the case on the right route before generating an EFW2C file. An address problem does not automatically justify transmitting another federal wage record.

Collect the originally filed W-2 and every subsequent correction affecting the same field. Section 3.2 of the 2026 EFW2C specification says an originally reported money amount must match the latest amount SSA processed. After a prior correction, that baseline may be the corrected amount on the prior W-2c rather than the first W-2.

Keep a source reference for each baseline value. A payroll system's current year-to-date screen may already include changes that were never filed. Label pending corrections separately from processed ones. If the latest processed amount is uncertain, resolve it with SSA using the official support instructions instead of guessing which local version became effective.

For every proposed money correction, record the W-2 box or code, previously reported amount, correct amount, reason and payroll support. Add an internal difference column for review, but do not substitute that difference for the full correct amount in the correction.

For fields not being corrected, identify them as unchanged. In EFW2C, the corresponding originally reported and correct money fields generally remain blank when no correction is intended, subject to the specification's field-specific instructions. A zero is meaningful when correcting an amount to zero. Keep unknown values, unchanged fields and zero values distinct in the intake worksheet so software cannot collapse all three into one default.

Assume an employer discovers that its processed 2025 W-2 for employee P14 overstated federal wages by $1,200 because a payroll mapping included an excluded amount. The payroll reviewer has established that Social Security and Medicare wages were already correct. This fictional example illustrates intake documentation, not a rule determining taxability.

The packet includes the processed baseline and the approved payroll explanation. It does not infer that every wage box must decrease by the same amount.

Incorrect EIN, tax year and certain other employer attributes require special handling, often two correction reports under the EFW2C specification. Employee name or SSN corrections have their own required identity fields. When both the previous name and SSN were blank or unavailable in the combinations described by IRS instructions, contact SSA rather than improvising a W-2c.

Review withholding corrections carefully. The IRS instructions restrict Box 2 corrections to administrative reporting errors and contain separate restrictions for Additional Medicare Tax. A request to change what should have been withheld is not automatically a permitted change to what was actually withheld. Route the payroll tax determination to the appropriate reviewer.

Record the actual preparer and reviewer, review date, supporting documents and unresolved questions. Leave sign-off fields empty until someone performs the review. Include the current EFW2C specification edition, the corrected tax year and the intended filing period so the file builder does not confuse these dates.

The IRS directs employers to file W-2c/W-3c and provide employee corrections as soon as possible after discovering an error. Assign both filing and furnishing follow-up. A wage correction may also require an employment tax return adjustment, such as Form 941-X; track that determination separately. Deliver a case that can be built and verified without a second person having to rediscover the baseline or the reason for change.