
SECURE 2.0 Mandatory Auto-Enrollment in 2026: A Compliance Playbook for New 401(k) and 403(b) Plans
SECURE 2.0 requires new 401(k) and 403(b) plans established after December 29, 2022 to adopt an Eligible Automatic Contribution Arrangement with a 3% default deferral, 1% annual escalation up to a 10–15% cap, QDIA investment, and 90-day permissible withdrawal — with plan document amendments due by December 31, 2026.










