From tracking quarterly 10-K and 10-Q disclosures across the top 15 public life insurers since LDTI adoption, the pattern is clear: market risk benefit (MRB) remeasurement gains and losses now routinely swing net income by 10% to 25% quarter over quarter, a level of volatility that pre-LDTI reporting obscured entirely. Large SEC-filing life insurers have completed 12 quarters of financial reporting under ASU 2018-12 as of Q1 2026, and the data is sufficient to assess whether the standard has achieved its stated goals of more transparent and relevant reporting for long-duration contracts.

The short answer: LDTI has delivered transparency, but at a cost. Earnings communication has grown more complex, annuity product design decisions are increasingly influenced by accounting treatment, and actuarial teams bear an operational burden that shows no sign of easing. This analysis draws on carrier-level earnings data, KPMG implementation benchmarking, the American Academy of Actuaries’ May 2025 FASB agenda request, and LIMRA sales data to evaluate the practical lessons from three full years of LDTI reporting.

$461.3B
2025 Annuity Sales (LIMRA)
$27M
Avg. Implementation Cost (2025 Adopters)
65 pt
Workforce Intent-to-Action Gap (Deloitte)

The MRB Volatility Pattern: What 12 Quarters Reveal

The most significant post-LDTI reporting phenomenon is the divergence between GAAP net income and adjusted operating earnings at life insurers with large variable annuity and indexed annuity blocks. Market risk benefits, the ASU 2018-12 category covering contract features that protect policyholders from capital market risk, must be measured at fair value using risk-neutral stochastic scenarios. Changes in that fair value flow through net income each quarter, except for changes attributable to the insurer’s own credit risk, which route through other comprehensive income (OCI).

The quarterly earnings releases from the three years of LDTI reporting illustrate the scale of these swings.

Lincoln Financial provides the starkest example. In Q3 2022, Lincoln’s first annual assumption review under LDTI produced net unfavorable notable items of $2.1 billion, or $12.47 per diluted share, driven by updated mortality, lapse, and morbidity assumptions flowing retrospectively through the net premium ratio. One year later, the Q3 2023 review produced a much smaller $144 million unfavorable impact ($0.84 per share). For full-year 2025, Lincoln reported net income of $1,086 million ($5.83 per share) versus adjusted operating income of $1,537 million ($8.23 per share); the $451 million gap was “primarily attributable to the non-economic impact of changes in market risk benefits.” In Q4 2025 alone, MRB remeasurement drove a $311 million positive difference between the two metrics. These quarter-to-quarter reversals, where MRB losses in one period become gains in the next, create a reporting pattern that even experienced life insurance analysts find difficult to model forward.

MetLife, the largest U.S. life insurer, adopted LDTI with a January 1, 2021, transition date. For full-year 2023, MetLife reported GAAP net income of $1.4 billion, down sharply from $5.1 billion in 2022, while adjusted earnings remained relatively stable at $5.5 billion. By full-year 2025, MetLife’s net income was $3.2 billion ($4.71 per share) while adjusted earnings per share, excluding notable items, reached $8.89, up 10% year over year. MRB remeasurement gains partially offset net derivative and investment losses during the year. The persistent gap between GAAP and adjusted metrics reflects the ongoing volatility that MRB fair value introduces to reported results.

Prudential Financial shows how MRB impacts can reverse dramatically across quarters. In Q3 2024, Prudential recorded $146 million in pre-tax MRB losses. By Q4 2024, the losses had moderated to $77 million. Then in Q3 2025, Prudential booked $324 million in pre-tax MRB gains, a swing of $470 million in just four quarters. These movements are driven by changes in equity market levels, interest rate curves, and equity index implied volatility, none of which the insurer controls, yet all of which flow directly into reported net income.

The cumulative effect across the industry is that virtually every major life insurer now presents earnings on two bases: GAAP net income (which includes MRB remeasurement, discount rate effects, and assumption update impacts) and adjusted operating earnings (which strips out these non-economic items). Investor presentations from MetLife, Lincoln, Prudential, and Jackson Financial all contain reconciliation tables that can run two or more pages. For financial reporting actuaries, preparing and explaining these reconciliations has become a core quarterly deliverable.

The Annual Assumption Update: Q3 as the New Earnings Event

Beyond MRB fair value, LDTI’s second major volatility driver is the annual assumption review. Under the pre-LDTI framework, cash flow assumptions for the liability for future policy benefits (LFPB) were locked at policy inception and updated only upon a premium deficiency or loss recognition event. LDTI replaced this with a requirement to update mortality, morbidity, lapse, and expense assumptions to current best estimates at least annually, using a retrospective unlocking approach.

In practice, most life insurers schedule their annual assumption review for the third quarter, making Q3 earnings releases the focal point for reserve adjustments. This has created a new seasonal pattern in life insurer earnings. Q3 results now carry a structural element of earnings surprise that Q1, Q2, and Q4 do not, because the annual unlocking can produce material gains or losses depending on whether actual experience has been more or less favorable than prior assumptions.

The retrospective nature of the unlocking mechanism amplifies its impact. When an assumption is updated, the net premium ratio (NPR) is recalculated from contract inception using the revised assumption, and the resulting change to the LFPB flows through net income in the current period. For large blocks of traditional life or long-term care insurance where assumptions may have been set decades ago, a single percentage-point change in a mortality or lapse assumption can move reserves by hundreds of millions of dollars.

Patterns we have seen across the first three annual reviews (2023, 2024, and 2025) suggest that the volatility from assumption unlocking has not meaningfully dampened over time. The initial expectation among some practitioners was that after one or two rounds of updating locked-in assumptions to current estimates, the annual adjustments would stabilize. This has not occurred, for two reasons. First, the underlying experience itself continues to shift, particularly for post-pandemic mortality, long-term care utilization, and annuity policyholder behavior. Second, the retrospective calculation methodology means that even small changes compound across the full history of each cohort, producing outsized income statement effects relative to the size of the assumption change.

The NPR capping mechanism adds additional complexity. When updated assumptions push the net premium ratio above 100%, the excess is capped, creating a floor on the LFPB. The American Academy of Actuaries’ December 2023 practice note describes scenarios where a cohort that was profitable at inception transitions to a capped state following adverse assumption updates. The accounting treatment differs depending on when and whether capping occurs, creating path-dependent outcomes that require careful disclosure and communication.

Annuity Product Design in a Post-LDTI World

Record annuity sales have occurred against the backdrop of LDTI adoption, and the interaction between product design and accounting treatment is becoming a factor in product development decisions.

LIMRA reported that total U.S. retail annuity sales reached $461.3 billion in 2025, up 6% year over year, with quarterly volumes exceeding $100 billion for nine consecutive quarters. For 2024, sales were $432.4 billion, a 12% increase. Within the product mix, registered index-linked annuities (RILAs) grew 20% to $79.6 billion in 2025, while fixed indexed annuity (FIA) sales reached $128.2 billion. Together, indexed products now represent 45% of total annuity market volume. LIMRA projects 2026 sales will remain above $450 billion, supported by demographic demand and maturing contract rollovers.

LDTI’s MRB classification applies to contract features that protect policyholders from capital market risk while exposing the insurer to other-than-nominal capital market risk. This primarily captures variable annuity guarantees, including GMDBs, GMWBs, and GMIBs. For products with these features, the fair value measurement of MRBs at each reporting date creates the earnings volatility documented above.

The accounting treatment has influenced product design in several observable ways. First, the growth of RILAs, which share downside risk with policyholders through buffer or floor mechanisms rather than providing full guarantees, partially reflects the reduced MRB accounting burden relative to traditional variable annuities with rich guaranteed living benefits. While RILAs carry their own accounting complexity (the index credit component is typically classified as an embedded derivative under ASC 815), the MRB volatility profile is narrower because the policyholder absorbs some capital market risk.

Second, fixed indexed annuities present a distinct LDTI challenge. The attributed fee approach for MRB valuation, where the MRB liability starts at zero if fees are sufficient at issue and emerges over time using a locked-in attributed fee ratio, creates complexity for FIA products where guaranteed benefits are implicitly priced through investment spreads rather than explicit rider fees. RNA Analytics characterized MRB valuation for these products as the most complicated aspect of LDTI from an actuarial modeling perspective.

Third, the surge in fixed-rate deferred (FRD) annuity sales to $160.6 billion in 2025 (5% growth year over year) reflects, in part, the simpler LDTI treatment for products without capital market guarantees. FRD products do not generate MRB liabilities, and their LFPB measurement under LDTI is comparatively straightforward. While interest rate levels and the yield curve shape are the primary FRD sales drivers, the accounting simplicity relative to guarantee-bearing products is a consideration in strategic product allocation decisions at carriers managing LDTI reporting burden.

LDTI vs. IFRS 17: Three Years of Dual Reporting Reveal Persistent Gaps

For global life insurers and reinsurers operating under both U.S. GAAP and IFRS, the simultaneous January 2023 effective dates of LDTI and IFRS 17 created dual implementation challenges. Three years into both standards, the convergence points and remaining gaps are now well understood, but the gaps have proven more consequential than many anticipated.

Both standards require current measurement of insurance liabilities, replacing locked-in assumptions with periodic updates. Both mandate annual cohorts that prevent grouping contracts issued more than one year apart. Both produce more transparent disclosure of the drivers behind reserve changes.

The divergences, however, create real operational and analytical challenges for multinational groups. IFRS 17 requires contracts to be further grouped by profitability, separating onerous (unprofitable) contracts from profitable ones. LDTI does not require profitability-based grouping, meaning the same block of business may be segmented differently for U.S. GAAP and IFRS purposes, with corresponding differences in profit emergence patterns.

Discount rate treatment differs materially. LDTI mandates an upper-medium-grade (A-rated) fixed-income instrument yield, standardized across all insurers. IFRS 17 requires discount rates reflecting the characteristics of the liability being measured, which can include illiquidity adjustments and currency-specific curves. The Academy’s May 2025 FASB agenda request specifically flagged the LDTI discount rate for life payout annuities, noting that the A-rated yield does not provide an illiquidity premium consistent with the extreme illiquidity characteristics of these contracts, often generating a loss at inception for economically profitable business. The Academy recommended that FASB provide an exception allowing a lower-quality (BBB-rated or blended BBB/A-rated) discount rate for payout annuity contracts. IFRS 17 already accommodates this through its principles-based discount rate framework.

DAC treatment diverges as well. LDTI simplifies to constant-level amortization over the expected contract term, with no linkage to gross profits or margins. IFRS 17 incorporates acquisition costs into the contractual service margin (CSM) and amortizes them as part of insurance revenue recognition over the coverage period. As Milliman’s comparison framework has shown, while baseline profit emergence is broadly similar between the two standards for simple products, the profit signatures from experience or assumption changes can differ significantly, complicating performance comparison for multinational groups reporting under both regimes.

The arrival of IFRS 18 (Presentation and Disclosure in Financial Statements), effective January 1, 2027, with mandatory 2026 comparatives, adds a third layer of complexity for global insurers. IFRS 18 introduces a new operating/investing/financing categorization for income statement presentation and interacts with the IFRS 17 insurance service result and reinsurance contracts held. For dual-reporting groups, the 2026 preparation work for IFRS 18 comparatives runs concurrently with ongoing LDTI quarterly reporting, creating resource allocation pressure on already-stretched financial reporting teams.

RSM’s analysis of global insurance accounting convergence concluded that while both LDTI and IFRS 17 represent major improvements over their predecessors, the remaining differences are not merely cosmetic. They affect investment strategy (through discount rate effects on asset-liability management), product design decisions (through different treatment of guarantee features), and M&A valuation (through different profit emergence patterns for acquired blocks). For global reinsurers like Swiss Re and Munich Re, which report under IFRS but cede and assume U.S. GAAP-measured business, the divergence creates a permanent translation layer in treaty pricing and reserve assessment.

Operational Burden and the Actuarial Talent Strain

The ongoing operational demands of LDTI have not diminished as implementation has matured. If anything, the burden has shifted from project-mode implementation to sustained production workload, a transition that some organizations have struggled to staff for.

KPMG’s benchmarking survey, the most comprehensive cost study available, found average LDTI implementation costs of $26.4 million for 2023 SEC-filer adopters and $27 million for the 2025 non-public cohort. The technology transformation was substantial: 40% of surveyed insurers replaced their databases, 36% replaced actuarial valuation systems, and 21% replaced finance or accounting platforms during the implementation process. Among 2025 adopters, 50% reported significant or extensive use of external actuarial consultants, compared with 28% of the 2023 cohort, reflecting the smaller in-house teams at mutual carriers, fraternal benefit societies, and smaller stock companies.

Deloitte’s 2026 Global Insurance Outlook quantified the broader workforce challenge. While 90% of insurance executives surveyed agree on the urgency of reinventing the employee value proposition to reflect human-machine collaboration, only 25% have taken tangible action to elevate human skills, a 65-point intent-to-action gap. This gap applies acutely to LDTI teams, where the required skill set has expanded from traditional actuarial valuation into fair-value stochastic modeling, risk-neutral scenario generation, attribution analysis, and financial communication. The actuaries who mastered GAAP reserves under the locked-in assumption framework need different capabilities in the LDTI environment, and the organizations that have not invested in upskilling or external hiring are running on thin margins of expertise.

The quarterly production cycle itself is demanding. Each quarter, LDTI requires updated discount rate curves (upper-medium-grade yields mapped to liability durations), MRB fair value calculations using current market inputs, DAC amortization computations, and roll-forward disclosures with attribution to specific factors. The annual cycle adds assumption unlocking, experience studies, and the retrospective NPR recalculation. Cherry Bekaert noted that 2025 audits based on U.S. GAAP now include additional testing and disclosures around ongoing LDTI accounting changes, raising the bar for compliance documentation and audit readiness.

For non-public insurers in their first full year of LDTI reporting, the challenge is compounded by the expectation of conformity with the practices that large public companies have established over three years. Auditors, rating agencies, and regulators now have baseline expectations for cohorting granularity, assumption-setting rigor, and disclosure quality that the 2025 cohort must meet from the outset, without the benefit of the iterative learning that SEC filers accumulated from 2023 through 2025.

The Academy’s 2025 Agenda Request: Refinements FASB Should Consider

The American Academy of Actuaries’ Life GAAP Reporting Committee submitted a formal agenda request to FASB in May 2025 identifying three areas where LDTI has produced unintended consequences that warrant modification.

Payout annuity discount rate. The committee recommended that FASB allow a lower-quality discount rate (BBB-rated or blended BBB/A-rated) for contracts where all or substantially all benefit payments are contingent on the annuitant’s survival. The current A-rated yield requirement does not reflect the illiquidity premium available to insurers holding highly illiquid payout annuity liabilities, systematically producing losses at inception for economically profitable business. This distortion affects product pricing incentives, because carriers must either accept day-one GAAP losses on new payout annuity sales or design products to avoid the loss recognition trigger.

DAC amortization. The committee recommended refinements to how DAC amortization interacts with certain product structures, particularly flexible premium deferred annuities where the constant-level amortization basis can produce patterns inconsistent with the economic substance of the contracts.

Reinsurance accounting. The committee urged FASB to permit gains on reinsurance recoverables from NPR capping when corresponding losses exist on the direct contract. Under the current interpretation, a gain on reinsurance may be disallowed even when it mirrors a loss on the ceded business, distorting financial statements for transactions entered into in contemplation of one another.

Separately, in February 2025, the Academy’s Financial Reporting Committee submitted an agenda request encouraging FASB to consider a project on portfolio layer method (PLM) hedge accounting for liabilities. This request addresses the need for better hedge accounting tools in the post-LDTI environment where liability valuations are more market-sensitive and traditional hedge accounting elections may not adequately reduce income statement volatility.

FASB has not yet formally responded to these requests. The Board’s agenda prioritization will signal whether LDTI refinements are forthcoming in the near term or whether the standard will remain in its current form for the foreseeable future.

Did LDTI Achieve Its Goals? A Three-Year Assessment

FASB stated four objectives for ASU 2018-12: improve timeliness of recognizing liability changes, standardize discount rates across insurers, simplify DAC amortization, and enhance disclosure transparency. Against each objective, the three-year record is mixed.

Timeliness: Achieved, with caveats. Assumption unlocking and quarterly MRB fair value updates ensure that liabilities reflect current conditions rather than decades-old locked-in estimates. However, the timeliness has introduced earnings volatility that complicates, rather than clarifies, investor understanding of underlying business performance. The universal adoption of “adjusted” operating metrics by life insurers suggests that GAAP net income, the metric LDTI was designed to improve, is now viewed as less informative for ongoing performance assessment than the non-GAAP measure that strips out LDTI-driven items.

Discount rate standardization: Achieved at the cost of economic fidelity. The A-rated yield requirement enables cross-insurer comparison but disconnects liability measurement from the actual investment portfolios backing those liabilities. For products with extreme illiquidity characteristics, such as life payout annuities, the standardized rate produces inception losses that do not reflect economic reality. The Academy’s agenda request represents a formal acknowledgment that this trade-off has gone too far for certain product categories.

DAC simplification: Achieved. The constant-level amortization method has reduced computational complexity relative to the prior estimated gross profits/margins approach. However, the simplified pattern can produce counterintuitive earnings emergence for certain products, particularly in early durations, and the DAC amortization refinements requested by the Academy suggest that simplification may have overcorrected in some areas.

Disclosure transparency: Achieved comprehensively. The disaggregated roll-forwards of LFPB, MRB, and DAC, along with actual-versus-expected attribution, represent the most significant improvement in life insurance financial reporting transparency in decades. Analysts, rating agencies, and regulators now have visibility into the drivers of reserve changes that was previously unavailable. The volume and complexity of these disclosures, however, has created a substantial production burden that falls disproportionately on actuarial teams.

Outlook: The Standard Is Set, the Adaptation Continues

LDTI is no longer an implementation project. It is the operating reality for U.S. GAAP life insurance financial reporting, and the adaptations required by actuarial teams, product designers, investor relations functions, and finance organizations will continue to evolve. Several developments bear watching through the remainder of 2026 and into 2027.

FASB’s response to the Academy’s May 2025 agenda request will signal whether refinements to the payout annuity discount rate and reinsurance accounting are forthcoming. If adopted, a BBB-rated or blended discount rate for survival-contingent payout annuities would remove the inception loss distortion that currently penalizes economically sound product designs.

The maturation of the 2025 non-public cohort through their first annual assumption review (likely Q3 2026) will test whether smaller mutual carriers and fraternal benefit societies can sustain the ongoing operational demands of the standard with their leaner actuarial staffing models. KPMG’s finding that 50% relied extensively on external consultants during implementation raises the question of whether that reliance becomes permanent.

The IFRS 18 comparative preparation cycle running through 2026 will strain dual-reporting groups further, forcing simultaneous investment in LDTI quarterly production and IFRS 18 presentation redesign. Global reinsurers and multinationals face the prospect of three overlapping accounting framework demands for the indefinite future.

For practicing life actuaries, the career message from three years of LDTI reporting is unambiguous. The skill set that defined GAAP valuation work before 2023, building locked-in assumptions and running deficiency tests, is no longer sufficient. The post-LDTI actuary must be fluent in fair-value stochastic modeling, risk-neutral scenario calibration, roll-forward attribution, and investor-facing financial communication. Organizations that have not invested in building or acquiring these capabilities are accumulating risk that will surface in audit findings, regulatory scrutiny, or simply in the inability to close their books on time.

Sources

  1. FASB, “ASU 2018-12, Financial Services - Insurance (Topic 944): Targeted Improvements to the Accounting for Long-Duration Contracts,” August 2018 - fasb.org
  2. American Academy of Actuaries, Life GAAP Reporting Committee Agenda Request to FASB on LDTI, May 2025 - actuary.org
  3. American Academy of Actuaries, “Application of ASU 2018-12 to the Accounting for Long-Duration Contracts under U.S. GAAP” (Practice Note), December 2023 - actuary.org
  4. KPMG, “Benchmarking LDTI Implementation,” December 2024 - kpmg.com
  5. Lincoln Financial Group, “Fourth Quarter and Full Year 2025 Results,” February 2026 - businesswire.com
  6. MetLife, “Full Year and 4Q 2025 Results,” February 2026 - metlife.com
  7. Prudential Financial, “Full Year and Fourth Quarter 2025 Results,” February 2026 - prudential.com
  8. LIMRA, “U.S. Annuity Sales Hit Record $461 Billion,” 2026 - insurancebusinessmag.com
  9. LIMRA, “Quarterly U.S. Retail Annuity Sales Top $120 Billion For the First Time,” Q3 2025 - limra.com
  10. Deloitte, “2026 Global Insurance Outlook,” 2026 - deloitte.com
  11. Cherry Bekaert, “How LDTI Affects Insurance Accounting Standards,” August 2025 - cbh.com
  12. RSM, “Global Insurance Accounting Practices Converge, but Differences Remain,” 2024 - rsmus.com
  13. SOA Financial Reporting Section, “Bridging the GAAP: IFRS 17 and LDTI Differences Explored,” July 2022 - soa.org
  14. Oracle, “LDTI vs. IFRS 17 Comparison Guide” (White Paper) - oracle.com
  15. Milliman, “IFRS 17 vs. US GAAP LDTI: Different Animals?,” December 2019 - milliman.com
  16. RNA Analytics, “Tracking Progress with LDTI,” December 2025 - rnaanalytics.com
  17. SOA, “The New Face of LDTI Under US GAAP,” October 2025 - soa.org
  18. WNS, “Beyond Compliance: Leveraging LDTI and IFRS 17 for Strategic Advantage,” 2025 - wns.com

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