If you are a retiree from a Defined Benefit Retirement Plan, the Guaranteed Annual Benefit Adjustment (GABA) may increase your retirement benefit, if you are eligible.

Your GABA increase is dependent on your start date, and you must be retired a year for that increase to take effect. The raises are only given at the end of January.

For example: If your effective date of retirement is July 1, 2022, you will meet the 12-month requirement on July 1, 2023. You may then receive your first GABA increase beginning with your January 1, 2024, benefit.

The GABA applies to:

• Service Retirement Benefit;
• Early Retirement Benefit;
• Disability Retirement Benefit; and
• Survivorship Benefit.

GABA also applies to recipients, other than members, such as contingent annuitants and survivors. It does not apply to a person receiving the lumpsum death payment as an annuity.

GABA rates for members hired on or after July 1, 2013, are on a sliding scale shown below: 

See Mont. Code Ann. § 19-3-1605 for more information.