Indonesia's Population Is Aging Faster Than Its Pension System Was Built For. Here's the Math Behind Why That's a Problem
5 min read
Loading...
5 min read
In 2010, about 7.6 of every 100 Indonesians were 60 or older. In 2025, it was almost 12. That is the Indonesia aging population story in two numbers, and it has a direct link to your own retirement.
This post explains what that shift does to the pension system, in plain steps. No finance background needed. Where a term is new, it is explained the first time it shows up.
BPS (Statistics Indonesia) released its 2025 Inter-Census Population Survey, called SUPAS. It shows the share of people aged 60 and over, as reported by RRI and Katadata:
| Year | Share of population aged 60+ |
|---|---|
| 2010 | 7.59% |
| 2015 | 8.47% |
| 2020 | 9.93% |
| 2025 | 11.97% |
A country is called an "aging population" once that share passes 10%. Indonesia crossed it between 2020 and 2025.
It is not even across the country. DI Yogyakarta is at 17.83%, East Java at 15.45% and Bali at 15.07%.
BPS also projects the elderly share to reach 20.31% by 2045, as GoodStats reports. That is a projection, not a measurement. It could move.
The old-age dependency ratio counts how many older people there are for every 100 people of working age. In 2024, BPS put it at 17.76, per GoodStats.
Flip it around. 100 divided by 17.76 is about 5.6. So in 2024, there were roughly 5.6 working-age people for each person aged 60 or older. That division is our own arithmetic, not a BPS figure.
Why does it matter? Many pension systems work like a relay. Today's workers pay in, and that money helps cover today's retirees. When fewer workers stand behind each retiree, the relay gets harder to run.
Not entirely. The Jaminan Pensiun (JP) program, the monthly pension from BPJS Ketenagakerjaan, uses what is called a partially funded system. It is described this way in BKN's policy brief on PP 46 of 2015.
That means contributions are collected into a fund and invested. But benefits are set by a formula, not by what the fund earned. If the fund runs short, the formula still promises the payout.
The program is also young. It started in 2015, and the first years only collected money. Monthly payouts to retirees came later, which means the fund has had a head start. That head start does not last forever.
Here is the part that should get your attention. According to a projection reported by Investortrust, the JP fund's assets could run out in 2075 if the 3% contribution rate stays as it is.
Read that carefully. It is a projection built on assumptions about wages, returns and how long people live. It is not a prediction that your pension will vanish. It is a signal that the current numbers do not balance over a very long horizon.
BPJS Ketenagakerjaan has said the fund is healthy today. Bisnis.com reports that the program held about Rp207,09 trillion in managed assets as of June 2025, with its fund adequacy ratio kept at 100%. The worry is the long run, not this year.
Even with the fund intact, there is a second problem. The pension is thin.
Bisnis.com reports that the JP benefit replaces roughly 15% to 20% of a worker's final income. The ILO (International Labour Organization) standard is 40%.
A replacement ratio is simply the monthly pension as a share of your last salary. Here is a worked example, using our own numbers:
| Final salary | 15% replacement | 20% replacement | 40% (ILO standard) |
|---|---|---|---|
| Rp10.000.000 | Rp1.500.000 | Rp2.000.000 | Rp4.000.000 |
At 15% to 20%, a worker who earned Rp10 juta a month would get about Rp1,5 to 2 juta. At the ILO standard, the same worker would get Rp4 juta.
Two changes are already moving.
First, the retirement age to claim JP is rising. It went to 59 in early 2025, will reach 60 in 2028 and keeps rising one year every three years until it hits 65 in 2043, according to Bisnis.com and Katadata. The rule comes from PP 45 of 2015.
Second, BPJS Ketenagakerjaan has pushed to raise the contribution from 3% to 8%. Bisnis.com's report says this would lift the benefit toward the 40% target. This is a proposal. Employers and the government still have to agree, so do not count on it.
You cannot fix the system. You can decide how much of your retirement rests on it.
A pension of 15% to 20% of your salary will not replace a middle-class income. Treat it as a base, not the whole plan. Many people add their own savings, a DPLK, mutual funds or other assets on top.
This is general information, not advice on what you should hold.
Aging also shapes the wider economy. Fewer workers per retiree affects growth, government spending and bond supply. That is why it belongs on the same dashboard as interest rates and inflation.
Demographics move slowly. Interest rates, inflation and the rupiah move fast, and they decide how far your savings stretch. Open the NetWort Macro dashboard to see the BI rate, inflation and rupiah trends in one place, then compare them with the retirement number you are aiming for.