Your election was accepted

CP261 confirms acceptance of the S corporation election submitted on Form 2553. Keep this notice permanently.

Check when it takes effect

Compare the effective date with the date requested on Form 2553. The IRS notes that a late election can produce a different effective date, and relief may be available. Have your tax professional review any mismatch before preparing returns based on an assumed S corporation start date.

Maintain the ongoing records

IRS guidance reminds recipients to file Form 1120-S, shareholder Schedules K-1, and applicable employment returns on time. Keep the election, approval, and any later correspondence in the same permanent entity file.

This is different from EIN confirmation. Save both documents; they answer different questions about the business.