Series: Social Security Systems in the 2030s [Part 2] Bugs in the System and Strategic Arbitrage: The Leverage of National Pension 'Exemptions/Deferrals' and the Trap of 'Delayed Receipt' <Special Appendix: Application for Exemption/Payment Deferral>
In Part 1, we dissected the fact that the public pension system is a 'system that continues to erode real value through inflation and institutional adjustments instead of defaulting'.
This time, we will take a step further and shine a light on the 'structural bugs (distortions)' that exist within this engineered system.
The government and media use beautiful language when explaining the system: 'Exemptions and deferrals to save the needy' and 'Advantageous delayed receipt to increase your pension in preparation for longevity'.
However, when you unravel the mathematical reality, a perverse truth emerges: the 'advantageous choices' recommended by the government are the ones most exploited by taxes, while the 'compromise choices' touted as relief measures yield the highest capital efficiency (arbitrage).
Let us unravel the context of the system.
1. The Mathematics of Full Exemption: 'Risk-Free Public Leverage' Utilizing the 50% Treasury Contribution
When many people hear 'full pension exemption,' they think of it as a relief measure for the poor, a 'last resort' that causes the pension received in the future to drop drastically.
However, if you mathematically break down the fiscal structure of the basic pension, a completely different aspect comes into view.
The current funding source for the National Pension (Basic Pension) consists of 'premiums paid by participants: 50%' and 'treasury contribution (taxes): 50%' (since April 2009).
This is the structural bug that arises from this.
If an application for 'full exemption' is approved, the right to receive '50%' (the treasury contribution portion) of the future basic pension amount is secured even if you do not pay a single yen in premiums.
If the benefit for paying the full premium is '100', you can acquire '50' with zero expenditure. In investment terms, this is a state where 'risk-free public leverage' is operating, with the government guaranteeing half (50%) of the benefits with zero capital investment of your own.
In the early stages of a career, when becoming independent or starting a business, or during a business transition, protecting your liquidity (cash) on hand is the top priority.
Instead of leaving it unpaid (unpaid periods do not count toward the qualification period, and the treasury contribution portion is also zero), strategically utilizing the system to preserve 100% of your cash on hand while securing a floor for future benefits at 50% is nothing less than 'institutional arbitrage' that only those who know can enjoy.
2. The Trap of Delayed Receipt: The Wall of 'Marginal Effective Tax Rates' That Cancels Out the 'Maximum 84% Increase' in Face Value
On the other hand, what the government currently recommends most and what the media touts as 'definitely advantageous' is the 'delay of the start of receipt'.
If you delay the standard 65-year-old receipt by 10 years to age 75, the face value of the pension jumps by '0.7% per month (maximum +84%)'. Anyone would find it attractive to hear that 'if you endure until age 75, your pension will nearly double'.
However, a fatal trap lurks here: the 'gap between face value (gross income) and take-home pay (disposable income)'.
Japan's tax and social security system has a progressive structure where the burden rate increases as income rises. When the face value of your pension jumps by 84%, the following public burdens increase in tandem.
Income tax and resident tax(tax rate increase due to higher taxable income)
National Health Insurance Premiums / Late-Stage Elderly Healthcare System Premiums (surge in tandem with the previous year's income)
Long-term Care Insurance Premiums (income bracket increases, leading to higher premium tiers)
Out-of-pocket ratios for medical and long-term care expenses (increased from 10% to 20% or 30%)
As a result of the increased face value, the 'marginal effective tax rate' (the burden ratio applied to the increased portion), which combines taxes and social insurance premiums, rises sharply.
When performing mathematical simulations, it is not uncommon for cases where, even if the face value increases by 84%, the real increase rate on a take-home basis is whittled down to about 50-60%. Furthermore, if the out-of-pocket ratio for medical and long-term care jumps from 10% to 30%, the take-home efficiency of the entire standard of living deteriorates even further.
The 'delayed receipt to prepare for longevity risk' effectively transforms into 'an act of voluntarily jumping into the highest tax rate zone of old age, becoming an efficient collection target for the state.'
3. Eliminate 'emotions' and beat the system as a game rule
There is one important lesson to be drawn from this.
The 'recommended story' of the state and the 'mathematical profit and loss' are often pointing in opposite directions. That is what it means.
The stance we should take is not to evaluate the pension system based on morality or emotion. It is the cold perspective of game theory: 'How can I maximize my capital efficiency and defend my take-home disposable income within the presented rules?'
How will the state react when individuals begin to beat the system?
Individuals who understand the structure of the system protect their cash through exemptions and deferrals, build assets outside the system through NISA or private business, and avoid the tax traps of public pensions—.
What kind of future awaits after this 'individual optimization (clever escape)' progresses?
The state, too, will not just sit idly by, struggling.
When individual loopholes (system arbitrage) increase and the maintenance of the public pension system truly reaches its limit, the state will not make minor adjustments, but will play its 'final card to flip the rules of the game itself.'
That is the 'transition to Basic Income (BI),' which dismantles all existing social security (pensions and allowances) and switches to a flat payment, accompanied by the 'complete capture of all assets via CBDC (Central Bank Digital Currency) and My Number.'
Next time, I will reveal the final destination of the system we are about to face and the full picture of the state's 'final capital recovery scenario.'
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[Part 3] Continuing to 'The State's "Final Destination": Dismantling Social Security, Basic Income (BI), and Total Asset Capture'