01
Inflate the bill, not just the SIP
College, a wedding, a first home — each uses its own inflation. Headline CPI is the wrong yardstick for a private engineering degree.
For parents of children aged 1–10, in India
Gullak is a family ledger for PPF, Sukanya Samriddhi, SIPs, gold and the rest. It inflates the goal at the right rate, taxes the sleeve the way the Act taxes it, and shows the number in today's rupees — not a brochure CAGR. No account, no email.
01
College, a wedding, a first home — each uses its own inflation. Headline CPI is the wrong yardstick for a private engineering degree.
02
EEE on PPF and SSY. 12.5% LTCG above ₹1.25 lakh on equity. Slab drag on FDs. Clubbing under Section 64. Cess on top.
03
The briefing states the law, coupons and inflation it assumed — so you can see what breaks if Parliament or the RBI moves.
Sample maturity briefing
Aarav is five. The family has a PPF at the ₹1.5 lakh cap, a Nifty SIP that steps up 10% a year, and a small FD. This is what the engine does with current law.
A ₹25,00,000 goal today becomes ₹74,51,466 after 9.0% education inflation over 12.7 years. After tax under current law, the sleeve holds ₹1,34,62,636 — ₹77,06,755 in today's rupees.
Goal at maturity
₹74,51,466
from ₹25,00,000 today
Corpus after tax
₹1,34,62,636
₹6,33,927 tax reserved
In today's rupees
₹77,06,755
Deflated at household CPI
Surplus after tax
₹60,11,170
You can ease SIPs or add a second goal.
Solid line is post-tax corpus. Dashed line is the inflated goal.
If markets disappoint
₹1,11,04,839
₹36,53,374 spare · 149% funded
Base case
₹1,34,62,636
₹60,11,170 spare · 181% funded
If markets cooperate
₹1,57,90,594
₹83,39,129 spare · 212% funded
Each rupee is run through the instrument's actual treatment — EEE, slab drag, or capital gains — then the ₹1.25 lakh equity LTCG exemption is shared across sleeves in the same year.
| Sleeve | Put in | Nominal | Tax | After tax | Notes |
|---|---|---|---|---|---|
Aarav PPF Public Provident Fund · 7.1% | ₹24,30,000 | ₹45,71,843 | ₹0 | ₹45,71,843 | eee |
Nifty 50 SIP Nifty / Sensex index fund · 11.5% | ₹41,48,333 | ₹91,49,691 | ₹6,33,927 | ₹85,15,764 | equity cg |
Near-term FD sleeve Bank / corporate FD · 6.8% | ₹2,00,000 | ₹3,75,029 | ₹0 | ₹3,75,029 | interest slab |
12.5% equity LTCG above ₹1.25L, 20% STCG, 12.5% debt LTCG, 4% cess. Frozen as of Aug 2026.
Used to deflate the corpus into today's rupees.
College in India costs are inflated at this rate, not headline CPI.
Applied to interest-bearing products via Section 64 clubbing.
Shared across all equity sleeves that mature in the same financial year.
Aarav turns 18 on 15 Jun 2039.
Projected under current law as of August 2026 (Finance Act 2025 / Budget 2026). Small-savings coupons, capital-gains rates, the ₹1.25 lakh exemption, cess, and Section 64 clubbing can all change before Aarav turns 18. Gullak is a planning ledger, not SEBI-registered advice.
PPF
7.1%
Unchanged since April 2020. Q2 FY 2026–27 small-savings notification.
Sukanya Samriddhi
8.2%
Highest sovereign child rate. Reset quarterly with other small savings.
NSC (5-year)
7.7%
Interest deemed reinvested; taxable each year except the last.
Kisan Vikas Patra
7.5%
Doubles in about 115 months at the current notified rate.
SCSS (seniors)
8.2%
Shown for context — not a child product.
Bank FD (5-year)
6.5–7.1%
Typical scheduled-bank card rate for a 5-year retail FD.