AuthorsRahul Sharma
Author

Rahul Sharma

Founder and Editor, Numeraise

Rahul builds and maintains every calculator on Numeraise, and writes the guides that explain them.

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Editorial approach

Every calculator published here shows the formula behind it and lets you change every assumption. Articles state their sources and flag where a figure depends on rules that change between budget cycles. Corrections are welcome and acted on — see our editorial standards.

Nothing published on Numeraise is personal financial advice. Read the full disclaimer.

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Articles by Rahul Sharma (11)

Understanding CAGR: The Gold Standard for Measuring Investment Returns

Absolute returns can be misleading. Discover why Compound Annual Growth Rate (CAGR) is the only metric you should trust when evaluating long-term investments.

June 8, 2026 · 10 min read

The Ultimate Guide to Tax Planning in 2026

Don't wait until tax season to start thinking about your taxes. Discover the most powerful strategies to legally reduce your tax burden, optimize your deductions, and keep more of your hard-earned money this year.

June 4, 2026 · 14 min read

The Rule of 72: A Mental Math Trick Every Investor Needs to Know

Want to know exactly when your money will double? You don't need a spreadsheet, you just need to know the Rule of 72.

May 31, 2026 · 9 min read

Term vs Whole Life Insurance: Why Mixing Insurance and Investment is a Trap

Insurance agents love selling Endowment and Whole Life policies because of the massive commissions. Discover why pure Term Insurance is mathematically superior.

May 27, 2026 · 13 min read

SIP vs Lumpsum: Which Builds More Wealth Over Time?

When starting your wealth creation journey, you face a critical decision: should you invest a large amount of money all at once (Lumpsum), or...

May 23, 2026 · 10 min read

Rent vs Buy: The Ultimate Financial Decision

In Indian society, buying a house is considered the ultimate milestone of financial success. The prevailing logic is: Renting is throwing money away...

May 19, 2026 · 11 min read

The Unstoppable Power of Compounding: Why Starting at 25 vs 35 vs 45 Matters

Albert Einstein reportedly called compound interest the eighth wonder of the world. He who understands it, earns it; he who does not, pays it...

May 15, 2026 · 10 min read

Old vs New Tax Regime 2026: Which Saves More for Your Income?

One of the most complex financial decisions salaried individuals in India face every financial year is choosing between the Old Tax Regime an...

May 11, 2026 · 9 min read

How to Build a Bulletproof Emergency Fund

An emergency fund is your financial shock absorber. Learn exactly how much you need to save and where you should store it to protect yourself from life's unexpected surprises.

May 3, 2026 · 12 min read

Flat vs Reducing Balance: The Hidden Trap in Your Loan Interest Rate

Why a 10% Flat interest rate is actually much more expensive than a 15% Reducing Balance rate. Learn how to spot this common lending trap.

April 29, 2026 · 10 min read

7 Brutal EMI Mistakes That Will Cost You a Fortune

Taking a loan—whether for a car, a home, or personal needs—is a major financial commitment. When the bank approves your application, they calculate an EMI that seems affordable. But hidden traps inside the math are silently draining your wealth.

April 25, 2026 · 10 min read