The Reality Behind the '20 Million Yen Retirement Gap'

The so-called '20 million yen retirement problem,' highlighted in a 2019 report by Japan's Financial Services Agency, was derived from average household budget data for elderly couples. That report assumed an average monthly shortfall of about 5 man-yen, which works out to drawdowns of roughly 1,300 man-yen over 20 years and 2,000 man-yen over 30 years. In the Ministry of Internal Affairs' Household Survey (2024 average), retired couples aged 65 and over had disposable income of about 22.2 man-yen against consumption expenditure of about 25.7 man-yen, leaving a monthly shortfall of roughly 3.4 man-yen.

However, this figure is merely an average. The actual amount you need depends heavily on your lifestyle, housing costs, medical expenses, and spending on hobbies and travel. A personalized simulation is essential.

Public Pension Benefits and Living Cost Benchmarks

For a salaried couple enrolled in the Employees' Pension (Kosei Nenkin), a combined monthly benefit of roughly 22 man-yen is one common benchmark - about 15 man-yen from the husband's Employees' Pension and 6.5 man-yen from the wife's National Pension (basic pension). Self-employed couples receiving only the National Pension can expect roughly 13 man-yen combined even with a full contribution record. Benefits vary widely with enrollment period, career earnings, and annual revisions, so check your own projection on the pension record notice (nenkin teiki-bin) or the Nenkin Net portal.

Meanwhile, the Household Survey (2024 average) puts monthly consumption expenditure for retired couples aged 65 and over at about 26 man-yen. Attitude surveys often put the cost of a comfortable retirement at around 36 man-yen per month, but that figure shifts substantially with assumptions about housing, medical care, and hobbies. The gap between pension income and expenses is the monthly shortfall that must be covered by savings and investments.

Calculating the Shortfall and Required Savings

For a salaried couple with 22 man-yen in monthly pension income and 26 man-yen in expenses, the monthly shortfall is 4 man-yen. Over 30 years from age 65 to 95, that totals 4 man-yen x 12 months x 30 years = 1,440 man-yen. For a comfortable lifestyle at 36 man-yen per month, the shortfall becomes 14 man-yen x 12 x 30 = 5,040 man-yen.

  • Minimum lifestyle: shortfall of 4 man-yen/month x 30 years = approx. 1,440 man-yen
  • Average lifestyle: shortfall of 8 man-yen/month x 30 years = approx. 2,880 man-yen
  • Comfortable lifestyle: shortfall of 14 man-yen/month x 30 years = approx. 5,040 man-yen

Accumulation Simulation Through Age 65

Let's simulate building retirement savings through regular contributions. Investing 3 man-yen per month at 5% annual return from age 35 to 65 (30 years) yields approximately 2,497 man-yen. The total principal is 3 man-yen x 12 months x 30 years = 1,080 man-yen, meaning compound growth adds roughly 1,417 man-yen.

Severance pay varies widely with company size, length of service, and whether a plan exists at all - some employers offer none. If severance came to 1,000-2,000 man-yen, adding it to the accumulation above would work out to 3,500-4,500 man-yen, but that is a projection assuming a 5% annual return sustained for 30 years and is not a guarantee of future results. Try our simulator to enter your own contribution amount, return rate, and time horizon to see your projected future assets.