Sec. 10. NORMAL RETIREMENT PENSION. (a) For purposes of this section, a pension under this section is referred to as a normal retirement pension.

(b) A group A or group B member of the pension system who terminates employment is eligible for a normal retirement pension beginning on the member's effective retirement date after the date the member completes at least five years of credited service and attains either:

(1) 62 years of age; or

(2) a combination of years of age and years of credited service, including parts of years, the sum of which equals or is greater than the number:

(A) 75, provided the member is at least 50 years of age; or

(B) 70, provided the member attained a combination of years of age and years of credited service, including parts of years, the sum of which equals or is greater than the number 68 before January 1, 2005.

(c) A group C member of the pension system who terminates employment is eligible for a normal retirement pension beginning on the member's effective retirement date as provided by Section 6(e) of this Act.

(c-1) A group D member who terminates employment is eligible for a normal retirement pension beginning on the member's effective retirement date after the date the member completes at least five years of credited service and attains 62 years of age.

(d) Subject to Section 17 of this Act, the amount of the monthly normal retirement pension payable to an eligible:

(1) group A or group B member who retires before January 1, 2005, shall be determined under the law in effect on the member's last day of credited service;

(2) group A member who retires on or after January 1, 2005, is equal to the sum of:

(A) the member's average monthly salary multiplied by the percentage rate accrued under the law in effect on December 31, 2004, for each year of the member's years of credited service in group A that is earned before January 1, 2005;

(B) the member's average monthly salary multiplied by 2.5 percent for each year of the member's years of credited service in group A during the member's first 20 years of service that is earned on or after January 1, 2005; and

(C) the member's average monthly salary multiplied by 3.25 percent for each year of credited service of the member in group A during the member's years of service in excess of the 20 years described under Paragraph (B) of this subdivision that is earned on or after January 1, 2005;

(3) group B member who retires on or after January 1, 2005, is equal to the sum of:

(A) the member's average monthly salary multiplied by the percentage rate accrued under the law in effect on December 31, 2004, for each year of the member's years of credited service in group B that is earned before January 1, 2005;

(B) the member's average monthly salary multiplied by 1.75 percent for each year of the member's years of credited service in group B during the member's first 10 years of service that is earned on or after January 1, 2005;

(C) the member's average monthly salary multiplied by two percent for each of the member's years of credited service in group B in excess of the 10 years described under Paragraph (B) of this subdivision that is earned on or after January 1, 2005; and

(D) the member's average monthly salary multiplied by 2.5 percent for each year of credited service of the member in group B during the member's years of service in excess of 20 years that is earned on or after January 1, 2005; or

(4) group D member who retires on or after January 1, 2008, is equal to the sum of:

(A) the member's average monthly salary multiplied by 1.8 percent for each year of the member's years of credited service during the member's first 25 years of service; and

(B) the member's average monthly salary multiplied by 1 percent for each year of credited service of the member in group D during the member's years of service in excess of 25 years.

(d-1) For purposes of Subsection (d) of this section, service credit is rounded to the nearest one-twelfth of a year.

(e) A group D member who terminates employment with the city or the pension system may elect to receive an early retirement pension payable as a reduced benefit if the member has attained:

(1) at least 10 years of credited service and is at least 55 years of age; or

(2) five years of credited service and a combination of years of age and years of credited service, including parts of years, the sum of which equals or is greater than the number 75.

(e-1) The amount of the early retirement pension payable to a retired group D member under Subsection (e) of this section shall be equal to the monthly normal retirement pension reduced by 0.25 percent for each month the member is less than 62 years of age at retirement.

(f) The amount of the monthly normal retirement pension payable to a retired group C member is computed as provided by Section 6 of this Act.

(g) Notwithstanding any other provision of this Act, the total normal retirement pension of a retired member with credited service in group A, group B, group C, or group D may not exceed 90 percent of the member's average monthly salary.

(h) On or after February 1, 2018, and for future payments only, pension benefits for all group A retirees and group B retirees, and for all group D retirees who terminated employment on or after the year 2017 effective date with at least five years of credited service, and survivor benefits for eligible survivors of a former member of group A or group B, or of a former member of group D who terminated employment on or after the year 2017 effective date with at least five years of credited service, shall be increased annually by the cost-of-living adjustment percentage, not compounded, for all such eligible persons receiving a pension or survivor benefit as of January 1 of the year in which the increase is made.

(i) A member receiving a normal retirement pension is considered to have resigned and shall be removed from the regular full-time employment rolls of the city or the pension system not later than the day before the member's effective retirement date.