The standard NPS calculator lie

Open any bank's NPS calculator — SBI, HDFC, ICICI, even the official NPS Trust calculator. They all ask you the same three questions: your age, monthly contribution, expected rate of return. The default for "expected return" is almost always 10%. You hit Calculate. You see a giant green number — "Your corpus at age 60: ₹2.84 crore!" You feel rich. You bookmark the page. You go on with your life.

That number is wrong. Not in a "give or take 5%" way. Wrong in three distinct ways that compound to make your actual usable retirement income roughly 40-50% lower than what the calculator told you. I learned this the hard way when I started reading the actual PFRDA circulars in late 2024 — not the marketing pages, the raw regulations on pfrda.org.in. What I found made me redo my entire retirement plan.

This post is the long version. By the end you'll understand: why "10% return" is unrealistic for NPS specifically (not for equity in general), how the lifecycle glide path silently lowers your return year by year, the 60/40 rule that locks 40% of your corpus into a low-yield annuity, and the tax bomb that makes annuity income worse than a basic FD. I'll show all of this with one specific scenario: ₹5,000/month contribution from age 30 to age 60.

Disclaimer upfront

This post is critical of NPS as a sole retirement vehicle, but NPS has real strengths — the ₹50K extra 80CCD(1B) deduction, the corporate 80CCD(2) up to 14% of basic, and very low fund management fees (0.03–0.09% TER). The post argues you should understand it deeply before relying on it. Talk to a SEBI-registered planner before changing your allocation.

Lie #1: The flat 10% return assumption

NPS Tier-1 has four asset classes:

CLASS    NAME                   TYPICAL LONG-TERM RETURN (10Y)
─────────────────────────────────────────────────────────────────
  E      Equity (Nifty 50 mostly)        11–13%
  C      Corporate bonds (high grade)     8–9%
  G      Govt securities (G-Secs)         7–8%
  A      Alternatives (REITs/InvITs)      6–8%

Your portfolio return is the weighted average of these. Calculators assume 10% as if you'll always be in 100% equity. But the maximum allocation to E (in Active Choice) is 75% until age 50, then forcibly tapered down. In Auto Choice (the default for most people), you start much lower and ratchet down faster.

If your allocation is 75% E + 15% C + 10% G, your weighted return is roughly:

0.75 × 12% + 0.15 × 8.5% + 0.10 × 7.5%  =  10.275%

That's the maximum, sustained only if you're in Active Choice and your E allocation stays at 75% — which it can't, beyond age 50. In practice, a realistic long-term blended return for an NPS Tier-1 subscriber is 9–10% pre-retirement, falling to 7–8% in the last decade. The "10% flat for 30 years" assumption silently inflates the corpus.

Lie #2: Auto Choice (LC75 / LC50 / LC25) — the glide path nobody explains

About 70% of NPS subscribers (per PFRDA's annual report) are on Auto Choice. Auto Choice has three lifecycle funds — LC75 (aggressive), LC50 (moderate, default), LC25 (conservative). The number = max equity at age 35. From there it tapers down automatically.

The actual glide path for LC50 (default) is roughly:

AGE     EQUITY (E)    CORP BONDS (C)    GOV SEC (G)
────────────────────────────────────────────────────
≤35      50%            30%               20%
40       40%            25%               35%
45       30%            20%               50%
50       20%            15%               65%
55       10%            10%               80%
60        5%             5%               90%

Notice how by age 55 — still 5 years from retirement — you're 80% in G-Secs returning ~7.5%. Your portfolio return in the last decade hovers around 7-8%, not 10%. The "magic of compounding" in the final decade is the most powerful, and it's the decade NPS forcibly steers you into low-yield bonds.

Even LC75 (the aggressive option) tapers from 75% equity at 35 down to 15% by 55. The glide path is mandatory in Auto Choice. You can override by switching to Active Choice, but most people never do.

Lie #3: The 60/40 mandatory split at retirement

This is the rule that surprises everyone. At age 60, PFRDA rules say:

  • 60% of corpus can be withdrawn lump-sum, tax-free (under Section 10(12A))
  • 40% must be used to buy an annuity from an empanelled life insurance company

You cannot just take the full corpus and invest it in mutual funds. The 40% has to go into an annuity product. Current annuity rates for the most common options:

ANNUITY OPTION                       APPROX YIELD (2026)
────────────────────────────────────────────────────────────
Life annuity (single)                 6.5–7.0%
Life with return of purchase price    5.8–6.3%   ← most popular
Joint-life (spouse) + ROP             5.5–6.0%

So if your NPS corpus at 60 is ₹1 crore, you get ₹60 lakh as lump sum, and ₹40 lakh goes into (say) a "life with return of purchase price" annuity at 6%. Monthly pension: ₹40,00,000 × 6% / 12 = ₹20,000/month, for life. When you die, your nominee gets the ₹40 lakh back.

Standard NPS calculators show you the corpus but skip showing this split. They imply you'll get the full ₹1 crore to do what you want with. You won't.

Lie #4: The annuity tax bomb

The ₹20,000/month pension above is taxed at slab rate for the rest of your life. Not at LTCG 12.5%, not at SCSS senior-citizen tax-free, not under 80TTB exemption — at your full slab rate as "income from other sources."

If at 60 you're still in the 20% slab (₹2.4L of annuity income alone plus pension/rental income), you're paying ₹48,000/year on this annuity, every year, for life. Effective post-tax yield drops from 6% to 4.8%.

Compare to PPF (post-tax 7.1% currently, fully exempt) or SCSS (post-tax ~5.6% after 20% slab, but you can withdraw fully). The annuity is structurally worse than these alternatives in tax efficiency. And you have no choice — 40% goes into the annuity, period.

Realistic projection: ₹5,000/month from 30 to 60

Let me show you what changes when you account for all four lies. Same input — ₹5,000/month, age 30 to 60, 30 years.

SCENARIO A — STANDARD CALCULATOR (10% flat, no realism)
─────────────────────────────────────────
Monthly contribution    : ₹  5,000
Years                   : 30
Return                  : 10% flat
Corpus at 60            : ₹ 1,13,96,000  (~₹1.14 Cr)

Implication shown to user:
"You will retire with ₹1.14 Crore!" 🎉

SCENARIO B — REALISTIC (LC50 glide path, true blended return)
─────────────────────────────────────────
Year-by-year weighted return:
  Age 30-35 (50/30/20): blended ~9.5%
  Age 35-40 (40/25/35): blended ~9.0%
  Age 40-45 (30/20/50): blended ~8.5%
  Age 45-50 (20/15/65): blended ~8.0%
  Age 50-55 (10/10/80): blended ~7.6%
  Age 55-60 (5/5/90)  : blended ~7.4%

Approximate effective CAGR over 30Y ≈ 8.4%
Corpus at 60            : ₹  77,50,000  (~₹0.78 Cr)

Difference from Scenario A : ₹  36,46,000 LESS

SCENARIO C — WHAT YOU ACTUALLY GET POST-RULES
─────────────────────────────────────────
Corpus at 60                       : ₹  77,50,000
Lump-sum (60%, tax-free)           : ₹  46,50,000
Annuity purchase (40%, mandatory)  : ₹  31,00,000

Monthly pension from annuity:
  ₹31,00,000 × 6% / 12             : ₹     15,500/month  (pre-tax)
  Less 20% slab tax                : ₹    (3,100)/month
  Net monthly pension              : ₹     12,400/month  (post-tax, for life)

If you invest the ₹46.5L lump-sum in:
  • SCSS (8.2% post-tax ~6.6%)     : ₹  25,500/month interest
  • Combination FD + debt MF       : varies

The realistic picture: a ₹5,000/month SIP in NPS for 30 years gives you a lump sum of ₹46 lakh + a fixed pension of ~₹12,400/month after tax. Useful, but very different from the ₹1.14 Cr "you'll be rich!" promise.

Now factor in inflation. ₹12,400/month at age 60 in 2056, at 5% inflation over 30 years, has the purchasing power of ~₹2,870/month in today's money. This is grocery money, not retirement-living money.

NPS vs PPF vs ELSS — when each actually wins

I've thought about this in three buckets. None is a winner outright; it depends on what you're optimising.

                          NPS Tier-1     PPF         ELSS MF
─────────────────────────────────────────────────────────────────────
Section eligibility       80C + 80CCD     80C        80C only
Extra ₹50K under 80CCD(1B) ✓               ✗           ✗
Lock-in                   Till age 60     15Y        3Y
Return (realistic)        7-9% blended    7.1% fixed  10-12%
Liquidity                 Very poor       Poor        Excellent
Equity exposure           Capped, glide   None        100%
Tax on maturity           60% tax-free,   100%        12.5% LTCG over
                          40% taxable     tax-free    ₹1.25L exempt
                          annuity
Annuity forced?           Yes, 40%        No          No
TER / fund mgmt cost      0.03-0.09%      0           1.0-1.5%
─────────────────────────────────────────────────────────────────────
BEST FOR                  Tax-saving      Safety,     Long-term wealth
                          + corporate     gov-backed  + flexibility
                          match

My current allocation for retirement money (personal, do your own thinking):

  • EPF (forced, employer-driven) — ~₹71K/year
  • NPS Tier-1 — ₹50K/year (purely to claim 80CCD(1B); no more)
  • PPF — ₹1L/year (15-year ladder, safety bucket)
  • ELSS — ₹50K/year (rest of 80C; mostly Mirae Asset Tax Saver)
  • Equity index funds (non-tax-saving) — bulk of long-term money

The withdrawal rules nobody talks about

Pre-retirement, you can do partial withdrawals up to 25% of your own contributions (not employer's), but only after 3 years of subscription, and only for specific reasons listed in PFRDA's rules: children's higher education, marriage, buying first house, medical treatment, skill development. Maximum 3 partial withdrawals over the entire lifetime of the account.

If you exit before 60:

  • Only 20% lump-sum, 80% must go into annuity (much worse than 60/40 at 60)
  • Exit only allowed after 10 years of subscription (if joined < age 60)

If your corpus at 60 is < ₹5 lakh, you can withdraw the entire amount as lump sum (no annuity needed). Above ₹5L, the 60/40 rule kicks in.

The biggest mis-selling I see

Bank RMs sell NPS as "your retirement solution." It's not. It's a tax-saving wrapper with a forced annuity at the end. Use it for the ₹50K extra deduction under 80CCD(1B), absolutely — it's free money at your marginal slab. But don't put your retirement future entirely in NPS. The forced annuity at 6% post-tax = ~4.8% is a structural drag.

My recommendation: who should and shouldn't use NPS

You should use NPS Tier-1 if:

  • You want the extra ₹50K 80CCD(1B) deduction (₹15,000 saved/year at 30% slab — free money)
  • Your employer offers corporate NPS — 80CCD(2) up to 14% of basic in new regime is the single best CTC structuring trick
  • You explicitly want a "do not touch till 60" forced lock-in for discipline
  • You're in the 30% slab and want a tax-deferred equity-bond product

You shouldn't rely on NPS Tier-1 alone if:

  • You want flexibility on when and how to withdraw
  • You don't want to be forced into a low-yield annuity
  • You're in the 5%/20% slab (the tax benefit is much smaller; ELSS gives better return-per-liquidity tradeoff)
  • You believe you can DIY a sensible equity-bond portfolio for 30 years (probably you can, with index funds + PPF)

Run your own NPS numbers — with realistic glide-path assumptions

I built our NPS Calculator to model the glide path year by year, the 60/40 split, and the post-tax annuity income — instead of the flat-10% lie. For comparison with PPF/SIP/RD, use the PPF / SIP / RD Calculator. For broader tax planning around 80CCD, see How to Save Tax.

The honest closing thought

NPS is not bad. NPS is mis-sold. The product itself is one of the cheapest, most tax-efficient tax-saving instruments India has, especially when paired with a corporate 80CCD(2) match. But it is not a complete retirement plan. The standard calculators paint it as one because that's what makes you contribute more. PFRDA, banks, and POPs (Points of Presence) all earn from your contributions; nobody earns from telling you the realistic post-rule, post-tax number.

My personal rule, after spending three weekends inside PFRDA circulars: NPS is one of the four legs of a retirement stool, not the stool itself. The other three for me are EPF (forced), PPF (15-year safety), and a passive equity index portfolio. None of them require a forced annuity. None of them assume a flat 10%. All of them I can model with realistic glide paths and look at my real post-tax monthly income at 60.

If you take one thing from this post: open any NPS calculator, halve the corpus they show you, then apply the 60/40 split, then apply your slab rate to the annuity portion. That's your real number. Plan from there, not from the giant green number on the marketing page.

A

About Akram

Founder of BillCraft. Spent three weekends in late 2024 reading PFRDA circulars instead of doing something fun. Files his own ITR-2 since 2019. Holds NPS Tier-1 (for the 80CCD(1B) deduction only), PPF, and a passive index portfolio.