QuickCalc Notes

Short, practical reads on Indian tax, loans, and investments. Numbers first, no fluff. Written by the same team that builds the calculators.

Old vs New Tax Regime FY 2025-26 — when each one wins

₹3.75 Lakh. That's the number. Cross it, and Old beats New. The working below, plus the 87A cliff trick most people miss.

Read post →

Home Loan Prepayment vs SIP — most banker advice is wrong

It's not "depends on your risk profile." It's arithmetic. A ₹5 Lakh windfall, two paths, and the ₹13 Lakh gap your bank's RM won't mention.

Read post →

PPF vs ELSS vs NPS — three checks before you pick where 80C goes

Most people skip these. First: open your payslip and see how much EPF already eats. Then horizon. Then slab. About 60 seconds total.

Read post →

Banks model 55%. You should model 40%. That's the whole post.

Your "eligibility" is not your "affordability". One number is what the bank thinks you can survive. The other is what you can live with.

Read post →

SIP vs Lumpsum — which gives better returns?

Lumpsum wins on average over 10+ year horizons. SIP wins for most real investors because they don't have lumpsums.

Read post →

₹10,000 SIP for 5, 10, 20, 30 years — what it actually becomes

At 12% expected return: 20 years → ~₹1Cr flat, ~₹2Cr with 10% step-up. Time + step-up do the work.

Read post →

HRA exemption — docs, common mistakes, parent-rent rules

Lowest of three formulas. Landlord PAN mandatory above ₹1L/year. Parent-rent works only with a genuine paper trail.

Read post →

FD post-tax return by tax slab — what 7% actually pays

A 7% FD pays 4.9% to a 30%-slab earner. Equity LTCG at 12.5% is friendlier — but riskier. The full breakdown.

Read post →

Personal loan vs credit card EMI — when each saves more

For most amounts above ₹50k and tenures past 12 months, PL beats CC EMI. Below that, processing fees flip the math.

Read post →

Sukanya Samriddhi vs PPF — which is better for a daughter?

SSY pays more (8.2% vs 7.1%, Apr-Jun 2026 quarter) but it's single-purpose. PPF is more flexible. Side-by-side.

Read post →

More posts as we have something specific to say — not on a schedule.