National Pension System corpus and monthly pension
Long-term NPS Tier-1 avg 9–11% (auto-choice, age-glided)
Minimum 40% must buy annuity; rest is tax-free lumpsum
Corpus = P × [((1+i)^n − 1) / i] × (1+i) P = monthly contribution i = R/12/100 n = months till retirement Lumpsum = Corpus × (1 − annuityPct/100) Annuity Corpus = Corpus × annuityPct/100 Monthly Pension ≈ (Annuity Corpus × 6%) / 12