Pensions
How to verify pension plan actuarial cost of living adjustments and whether they meet statutory minimums.
A practical guide explaining how to assess actuarial cost of living adjustments in pension plans, how to verify their calculations, and how to determine if they satisfy statutory minimums across jurisdictions.
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Published by Kevin Baker
August 09, 2025 - 3 min Read
In pension administration, actuarial cost of living adjustments, or COLAs, are designed to preserve purchasing power for retirees as prices rise. To evaluate these adjustments, start with the plan’s official COLA formula, noting whether increases are tied to a price index, wage growth, or a fixed rate. Review the governing documents for eligibility rules, caps, and retroactive adjustments when adopted. Next, obtain the most recent actuarial valuation and any accompanying report from the plan actuary. This document should detail the assumptions used, including inflation expectations, the funding method, and the timetable for COLA implementation. Compare these figures with the plan’s published statements for consistency. Any discrepancy warrants further scrutiny.
Verification also requires checking statutory sources that set minimum COLA standards. Many jurisdictions authorize automatic increases when certain index thresholds or funding criteria are met, but they may permit alternative methods under special circumstances. Examine whether the plan’s COLA aligns with those statutory minimums, and whether any exemptions or temporary deviations are justified by law or emergency provisions. Review the legislative history or regulatory guidance that accompanied the statute to understand parliamentary intent. If the statute permits discretion, evaluate whether the plan’s chosen method remains reasonable, transparent, and reproducible by independent auditors. Documenting the alignment—or misalignment—is essential for accountability and future negotiations.
Strategies for verifying actuarial assumptions and outcomes
Begin by identifying the exact statute or regulation governing COLAs in the relevant jurisdiction. Extract the defined minimum percentage increases, the applicable price indices, and any annual caps that apply to pension benefits. Then compare these statutory requirements with the plan’s actual COLA awards. Use the plan’s annual report or actuarial valuation as your primary data source for the mechanics of the increase, including the base year, the calculation method, and the date of entry into effect. If the plan claims a temporary suspension or adjustment, verify whether the law allows such action and whether proper procedural steps were followed. Maintain a clear, auditable trail documenting every calculation and decision.
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Beyond the numbers, examine how COLAs affect the broader funding trajectory of the plan. An above-minimum COLA might be appealing for retirees but could tighten funding margins or necessitate higher contributions. Conversely, a below-minimum or delayed COLA could preserve solvency but reduce retirees’ long-term purchasing power. Analyze how the COLA interacts with other benefit provisions, such as step-ups for costlier medical costs or spousal benefits, to determine cumulative impact. Examine whether funding assumptions were revised in response to COLA changes and how alternate scenarios were modeled. A sound actuarial process should present sensitivity analyses, showing how different inflation paths influence future benefits and employer obligations.
How to validate calculations with independent verification
When reviewing actuarial reports, scrutinize the inflation assumptions used to project COLAs, including the choice of price indices and the treatment of volatile components like energy costs. Note whether the inflation measure is consumer price indices, producer price indices, or a blended index. Determine the length of the projection horizon and how near-term volatility is smoothed. Check whether the actuary discloses methodology for handling gains or losses arising from demographic assumptions, mortality improvements, and salary growth. If the report includes a ranges-based projection, document the probability band and the interpretation of outcomes. A rigorous review relies on reproducible calculations and clear explanations of any adjustments to standard assumptions.
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Another important area is the governance framework guiding COLA decisions. Confirm that the plan’s board or oversight committee has explicit authority to approve COLA changes and that there is a documented decision-making process. Look for minutes, voting records, and any required public notices that ensure transparency. Evaluate conflict-of-interest controls to prevent private benefit in setting generous COLAs. Where applicable, verify compliance with public pension reform laws that mandate independent actuarial oversight, external auditor review, and periodic audits of the COLA mechanism. Ultimately, the strength of governance determines whether actuarial soundness and statutory compliance remain aligned over time.
Understanding remedies when COLAs fall short
Independent verification begins with obtaining the actuary’s professional credentials and the adherence to recognized standards, such as those published by actuarial associations. Check whether the actuary performed a full certification, included disclosures, and signed a responsible party statement. Request the work product’s reproducible calculations, including all data inputs, indices used, and step-by-step formulas for the COLA computation. Where possible, run a parallel calculation using alternative inflation measures or different base years to observe result variations. Compare outcomes with peer plans facing similar demographics to assess reasonableness. Documentation should show not only the final percentage but also the exact mechanism used to arrive at that figure.
In the end, independent verification should culminate in a clear conclusion about statutory compliance. If the COLA matches or exceeds the minimums, this should be supported by explicit references to the applicable statutes and regulations, along with the calculation trail. If there is a shortfall, identify the precise amount needed to meet the minimum and outline proposed remedies, such as phase-in schedules or funding adjustments. Ensure there is a public-facing summary that explains the COLA in plain language for retirees and contributors alike. The goal is transparent accountability, enabling stakeholders to understand how benefits evolve and how legal requirements are honored, while preserving plan stability.
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How to document and communicate findings effectively
Remedies for noncompliant COLA outcomes can include procedural corrections, legislative amendments, or negotiated settlements with employee groups. Shortfalls may trigger automatic triggers in some plans, such as partial retroactive increases or temporary concessions in other benefit areas to maintain funding. In jurisdictions with defined contribution features, COLA verification often focuses on ensuring the automatic adjustment rules align with plan design documents rather than fund-level solvency alone. Consider the role of interim funding measures, like additional employer contributions or dedicated reserve transfers, while ensuring they comply with legal limits. Always evaluate the long-term sustainability implications before implementing any remedy.
Because pension law varies by jurisdiction, cross-checking with another authority—such as an attorney specialized in public pensions or a state auditor—helps corroborate findings. This independent review should confirm not only arithmetic accuracy but also alignment with statutory intent. Seek written attestations that the COLA adjustment process follows due process, public notice requirements, and any oversight committee protocols. If inconsistencies arise, prepare a concise corrective action plan, including timelines and responsible parties. A robust remedy process protects retirees’ interests and preserves public trust in the pension system.
Documentation plays a central role in verifying COLAs and demonstrating statutory compliance. Compile a comprehensive packet that includes the statute texts, the plan's COLA formula, actuarial valuation tables, and the independent verifier’s conclusions. Use plain language explanations to accompany technical calculations so readers without actuarial training can understand the result and its implications. Include a summary of assumptions, data sources, and limitations, along with any caveats about future variability. Ensure the packet is stored in a manner that allows lawmakers, retirees, and administrators to access it for audits, reviews, and public comment periods.
To conclude, the process of verifying pension plan COLAs requires meticulous cross-checking of legal requirements, actuarial methods, and governance procedures. A disciplined approach yields confidence that benefits are protected without compromising plan sustainability. By confirming that COLAs are calculated according to statutory minimums, examining the assumptions behind those calculations, and ensuring transparent governance, stakeholders can navigate the complexities of pension indexing with clarity. The outcome should be a defensible, reproducible, and auditable record that supports both retiree security and fiscal responsibility for present and future generations.
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