The basic structure
APY is a government-backed pension scheme primarily aimed at unorganized-sector workers without access to formal employer pension schemes. Subscribers choose a target monthly pension (₹1,000, ₹2,000, ₹3,000, ₹4,000, or ₹5,000) to start at age 60, and PFRDA's published contribution table sets the exact monthly amount needed between now and age 60 to reach that guaranteed pension — the contribution amount depends on both the entry age and the chosen pension slab.
Why entry age changes the contribution so much
Joining at 18 and targeting a ₹5,000/month pension requires a monthly contribution of just ₹210, paid for 42 years until age 60 — a total contribution of ₹1,05,840. Joining at 30 for the identical ₹5,000/month target requires ₹577/month for the remaining 30 years — a total contribution of ₹2,07,720, nearly double, for the exact same guaranteed pension amount. The gap exists because the later entrant has 12 fewer years for contributions to build toward the same target.
A worked example at a smaller pension target
The contribution amount also scales with the chosen pension size at a fixed entry age: at entry age 30, targeting ₹1,000/month (rather than ₹5,000/month) requires only ₹116/month, totaling ₹41,760 over the same 30 years — roughly a fifth of the contribution for a fifth of the pension, since the relationship between contribution and target pension is approximately proportional within a given entry age.
What happens to the money if the subscriber dies
APY also provides for a nominee corpus: if the subscriber dies, the spouse (or nominee) can either continue receiving the same pension or receive an approximate lump-sum corpus instead, scaled to the chosen pension size — roughly ₹170 of corpus for every ₹1 of monthly pension chosen, meaning a ₹5,000/month pension corresponds to an approximate nominee corpus of ₹8,50,000, and a ₹1,000/month pension to about ₹1,70,000.
Why the pension itself is "guaranteed" and not market-linked
Unlike NPS (which is market-linked and has no fixed guaranteed payout), APY's monthly pension amount from age 60 is fixed and government-guaranteed at whichever slab was chosen — the contribution table is specifically designed so that following it delivers that guaranteed amount regardless of market conditions. This makes APY comparable to a simple, predictable pension commitment rather than an investment with variable returns, which is part of why it specifically targets workers who may not have access to (or comfort with) market-linked retirement products.