Japan's changing interest-rate environment is altering policyholder behaviour and potentially the economics of insurers' in-force books. As surrender behaviour becomes less predictable, what begins as a policyholder decision can translate into liquidity pressure, asset realisation losses and balance-sheet volatility.
Japan's move away from an ultra-low interest-rate environment has brought lapse and surrender risk further up the agenda for life insurers.
For years, the main asset-liability management challenge was reinvesting maturing assets at yields sufficient to support long-dated guarantees. As market yields rise and new products offer more attractive returns, a different question is emerging: will some policyholders reconsider the value of their existing contracts?
While the Life Insurance Association of Japan (LIAJ) reported that the industry-wide lapse-and-surrender ratio for individual insurance declined from 5.9% in FY2023 to 5.6% in 2024, more recent data suggest the picture may be changing. According to LIAJ data reported by Nikkei, surrender benefits paid by 41 domestic life insurers reached approximately JPY 6.0 trillion in the first five months of 2026, 39% higher than in the same period a year earlier and the highest January–May level in the available series since 2020.
The acceleration has coincided with rising interest rates and more attractive yields on alternative financial products, increasing the incentive for some policyholders to reconsider existing, lower-yielding savings-oriented insurance contracts. But aggregate figures can mask behaviour across products and policyholder cohorts.
This brings dynamic lapse risk into focus: the risk that policyholders exercise their surrender option differently as economic conditions change, particularly when higher interest rates make existing policies less attractive. The central question is how sensitive policyholder behaviour will be to the economic incentive to surrender.
Lapse risk is ultimately about policyholder behaviour
Policyholders are rational economic decision-makers with an option to surrender their policies. As the relative financial attractiveness of that option changes, so can their behaviour. However, the decision is rarely driven by economics alone.
Sensitivity to higher rates is unlikely to be uniform. A legacy policy with an attractive guarantee may become more valuable to the policyholder, while a newer savings product with a lower guarantee and high surrender value may behave differently. Product type, guarantee cohort, duration and distribution channel can therefore produce significantly different lapse outcomes.
The financial comparison is only part of the policyholder's decision. A new insurance policy, bank deposit and government bond are not interchangeable. Policyholders also need to consider protection benefits, surrender charges, tax, health status, re-underwriting requirements and whether existing coverage can be replaced.
Yet these differences may not always be fully understood or considered when a policyholder decides whether to keep or surrender a policy. And interest rates are only one possible trigger.
Affordability, changing financial needs, perceived value and policyholder experience may matter too. For insurers, this means lapse is not simply an actuarial assumption; it is a behavioural risk whose financial impact can differ materially by portfolio and cohort.
After decades of ultra-low interest rates, this presents a particular challenge for Japanese insurers. Historical lapse experience may be a poor guide to how policyholders will respond in a new interest-rate regime, especially when the economic incentive to surrender becomes materially stronger.
From measuring lapses to actively managing persistency
Not every lapse is unavoidable. A proactive approach can identify which lapse behaviour may be influenced and which exposure is likely to remain.
Behavioural economics and analytics can complement traditional actuarial approaches to manage persistency by identifying vulnerable cohorts, understanding why policyholders may leave and supporting timely, targeted interventions.
A practical approach is to:
- Identify who is at risk – Combine policyholder, policy and behavioural data to identify vulnerable cohorts and emerging risks, thereby moving away from reactive retention to early interventions.
- Understand why policyholders lapse or surrender – Distinguish between drivers such as affordability, changing needs and relative financial value and move form a standard retention offer towards a next-best action.
- Intervene appropriately – Leverage predictive analytics and behavioural insights to deliver targeted and personalised interventions that address the underlying lapse drivers.
The objective is not to prevent every surrender. It is to reduce avoidable anti-selective lapses and establish a clearer view of the residual financial exposure that remains on the balance sheet.
When policyholder behaviour becomes a balance-sheet event
Unexpected surrenders create cash requirements. Where experience materially exceeds expectations, an insurer may need to realise longer-duration assets at an unfavourable point in the market, potentially crystallising losses and increasing earnings, liquidity or capital volatility. A policyholder behaviour event can therefore become a balance-sheet event.
Consider an insurer holding long-duration bonds to support a portfolio of savings-oriented life insurance policies. As interest rates rise, the market value of these bonds declines, while higher yields elsewhere may encourage policyholders to surrender. For example, if a policyholder's surrender value is JPY 10 million but the allocated backing assets are worth only JPY 8 million, the insurer could face a JPY 2 million funding shortfall. Across a large portfolio, such pressures can become significant.
The impact extends beyond liquidity.
Insurers have traditionally had longer liability duration than asset duration, so rising interest rates generally help reduce ALM mismatches. However, with higher rates and increased surrenders shortening liability duration, some insurers now face the opposite situation, where asset duration exceeds liability duration.
This creates additional ALM challenges, particularly under J-GAAP, and a sudden reversal in interest rates could make it difficult for insurers to adjust their positions quickly enough.
These interactions are particularly relevant under Japan's Insurance Capital Standard (J-ICS), where economic-value-based solvency is sensitive to interest rates, lapse assumptions and ALM mismatches. Rising rates can therefore affect policyholder behaviour, liability duration and asset values simultaneously, reinforcing the need to manage these risks together.
For CFOs, the key questions are therefore not only whether lapse rates are rising, but where the exposure sits: which books are most sensitive, how much liquidity would be required under stress, which assets might need to be realised, how portfolio economics and capital could be affected, and how much of that volatility the insurer is prepared to retain.
This points to three complementary lines of defence:
- Manage the underlying risk – Behavioural insights and analytics can help reduce avoidable anti-selective lapses.
- Manage the balance-sheet impact – Asset-liability management and liquidity management can absorb expected volatility.
- Transfer residual exposure – Structured reinsurance can protect against defined adverse scenarios.
Even the strongest retention strategy will not, and should not, prevent every surrender. Liquidity buffers, asset ladders, surrender charges, market-value adjustments and stress testing therefore remain important first lines of defence.
Reinsurance can complement these measures where an insurer does not wish to retain the full financial consequences of an adverse lapse scenario.
Structured reinsurance can provide another layer of protection by defining how much adverse lapse experience the insurer retains and how much is transferred. Depending on the portfolio and structure, solutions can be designed around specified lapse experience and the resulting financial consequences, allowing retained exposure to be aligned more closely with the insurer's risk appetite.
Behavioural interventions and reinsurance can therefore address different points along the same risk continuum, reducing avoidable lapses while protecting against the financial consequences of residual risk.
An integrated approach to in-force and balance-sheet management
The changing Japanese interest-rate environment creates an opportunity to take a broader approach:
- Understand – Identify vulnerable portfolios and policyholder cohorts and the behavioural drivers.
- Intervene – Reduce avoidable anti-selective lapses through earlier, better-targeted engagements.
- Retain – Match policyholders with appropriate next-best actions.
- Manage – Assess liquidity, ALM and capital implications under adverse scenarios.
- Protect – Determine the residual financial exposure the insurer wishes to retain and where structured reinsurance could complement existing risk management.
The objective is not simply to price for higher lapses after they occur. It is to understand changing policyholder behaviour, intervene where appropriate to manage the exposure it creates and make deliberate decisions to manage the financial risk.
As Japan adjusts to a new interest-rate environment, combining behavioural insights, disciplined ALM and appropriate risk transfer can help insurers strengthen the resilience of their in-force portfolios.
For insurers, this means treating dynamic lapse not only as an actuarial outcome, but as an in-force, liquidity and balance-sheet risk that can be actively managed.
Stephen Abrokwah is the Head L&H Re Japan at Swiss Re.
Source notes
- Life Insurance Association of Japan, Life Insurance Fact Book 2024-2025. Official source
- Life Insurance Association of Japan, Life Insurance Business Statistics (monthly statistics); Nikkei, 29 July 2026. Official source
- https://www.seiho.or.jp/english/statistics/summary/Official source
- IAIS, Issues Paper on Structural Shifts in the Life Insurance Sector, section on surrender-driven liquidity pressure and forced asset sales.
- JFSA, July 2026 revisions to the Comprehensive Guidelines for Supervision of Insurance Companies and public-comment response. Official source
- IFRS 17 Insurance Contracts, paragraphs B14-B15 on lapse or persistency risk. Official source