The Internal Revenue Service (IRS) has once again extended the temporary nondiscrimination relief for frozen defined benefit plans, now through 2020. Frozen pension plans are pension plans that have been closed to new participants but continue to provide ongoing benefit accruals for certain participants. This extended relief is intended to enable frozen pension plans to satisfy certain nondiscrimination testing requirements. In most cases, the relief allows the frozen defined benefit plan to be aggregated with a defined contribution plan to satisfy the nondiscrimination testing requirements. The relief assists the aggregated plan in passing nondiscrimination requirements that apply to accrued benefits and to certain rights and features relating to those benefits.