(4) Grandfather rule for preexisting benefits. A defined benefit plan is considered to satisfy the limitations of
section 415(b) for a participant with respect to benefits accrued or payable under the plan as of the end of the limitation year that is immediately prior to the effective date of final regulations under this section and
§§ 1.415(b)-1, 1.415(c)-1, 1.415(c)-2, 1.415(d)-1, 1.415(f)-1, 1.415(g)-1, and 1.415(j)-1 (as provided under paragraph (g)(1) or (2) of this section) pursuant to plan provisions (including plan provisions relating to the plan's limitation year) that were both adopted and in effect before April 5, 2007, but only if such plan provisions meet the applicable requirements of statutory provisions, regulations, and other published guidance relating to
section 415 in effect immediately before the effective date of final regulations under this section and
§§ 1.415(b)-1, 1.415(c)-1, 1.415(c)-2, 1.415(d)-1, 1.415(f)-1, 1.415(g)-1, and 1.415(j)-1 (as provided under paragraph (g)(1) or (2) of this section). Plan provisions will not be treated as failing to satisfy these requirements merely because the plan has not been amended to reflect changes to
section 415(b) made by the Pension Funding Equity Act of 2004,
Public Law 108-218 (118 Stat. 596), and the Pension Protection Act of 2006,
Public Law 109-280 (120 Stat. 780). In addition, plan provisions will not be treated as failing to satisfy these requirements merely because the plan's definition of compensation for a limitation year that is used for purposes of applying the limitations of
section 415(b)(1)(B) reflects compensation for a plan year that is in excess of the limitation under
section 401(a)(17) that applies to that plan year. If benefits under a plan are accrued after the applicable effective date under paragraph (g)(1) or (2) of this section, then the sum of the benefits grandfathered under the first sentence of this paragraph (g)(4) and benefits accrued after the applicable effective date must satisfy the requirements of
section 415, taking into account the requirements of this section and
§§ 1.415(b)-1, 1.415(c)-1, 1.415(c)-2, 1.415(d)-1, 1.415(f)-1, 1.415(g)-1, and 1.415(j)-1.