SIP vs FD Calculator – Which Investment Gives Better Returns?

SIP vs FD – Which Investment is Better?

SIP and Fixed Deposit are two popular investment options. SIP helps create long-term market-linked wealth through monthly investing, while FD offers guaranteed maturity with fixed returns.

This SIP vs FD calculator helps compare both side by side using monthly SIP contribution, expected SIP return, FD principal, FD interest rate, and investment duration.

SIP Advantages

• Monthly disciplined investing
• Power of compounding
• Potentially higher long-term returns
• Inflation-beating wealth creation

FD Advantages

• Guaranteed maturity value
• Low risk investment
• Stable returns
• Suitable for conservative investors

When SIP Can Outperform FD

Over long investment periods, SIP often creates larger corpus when expected annual returns remain above FD rates.

How This Calculator Makes the Comparison Fair

SIP and FD are structurally different: SIP builds a corpus gradually from monthly contributions, while FD grows a lump sum you hand over on day one. To compare them meaningfully, this calculator treats the FD principal as the money you'd have otherwise invested — so a natural, fair setup is entering an FD principal roughly equal to what your SIP would total in contributions over the same years (monthly SIP amount x 12 x years). With the calculator's own default inputs — Rs. 10,000 a month for 10 years at an expected 12% SIP return, against an FD principal of Rs. 12,00,000 at 7% for 10 years — the SIP's total contribution over the decade is also exactly Rs. 12,00,000, matching the FD principal. That makes it a genuine "same money, two paths" comparison rather than SIP being compared against an arbitrarily larger or smaller FD amount.

A Worked Example — and Why FD Sometimes Wins

Running the calculator's own default numbers: SIP of Rs. 10,000/month at 12% expected return for 10 years grows to a final corpus of about Rs. 23.2 lakh on total contributions of Rs. 12 lakh. The matching FD — Rs. 12,00,000 principal at 7% for 10 years, compounded quarterly — matures to about Rs. 24.0 lakh. In this particular comparison, FD actually comes out roughly Rs. 78,500 ahead. This is a genuinely useful result to understand, not a quirk of the calculator: FD's advantage here comes from getting the full Rs. 12,00,000 working and compounding from day one, while SIP's money arrives gradually over 10 years, so the earlier SIP contributions compound for close to a decade but the later ones barely compound at all. If the SIP's expected return were higher — say 13-14% instead of 12%, which is well within the range of historical long-term equity mutual fund returns in India — the outcome flips in SIP's favor. The calculator's chart and yearly breakdown table make it easy to see exactly which year the two lines cross, if they do.

Common Mistakes When Comparing SIP and FD

The most common mistake is leaving the FD principal at a value that doesn't match what you'd actually have been able to invest as a lump sum — entering a much larger FD principal than your real available lump sum makes FD look artificially stronger, and vice versa. Another is treating the SIP's "Expected CAGR" input as guaranteed; unlike FD, which offers a contractually fixed rate, SIP returns depend on market performance and the assumed percentage is an estimate, not a promise. People also sometimes forget that FD interest is fully taxable at your income slab rate each year it's credited (or on maturity, depending on the FD type), while SIP/mutual fund gains are taxed under capital gains rules with different rates for equity and debt funds — this calculator shows pre-tax maturity values for both, so actual take-home comparison should account for how each is taxed in your situation.

SIP vs FD – Frequently Asked Questions

Is SIP always better than FD over 10+ years?

Not always — it depends heavily on the SIP return assumption versus the FD rate. As the worked example above shows, a 12% SIP assumption against a 7% FD can still lose to FD if the FD principal fully matches the SIP's total contributions, because the FD's lump sum compounds from day one. SIP's advantage grows as the assumed return gap over FD widens or the investment horizon lengthens.

Why does the FD use quarterly compounding?

Most Indian bank fixed deposits compound interest quarterly rather than monthly or annually, so this calculator applies the FD rate divided by 4, four times a year, which matches how most bank FDs are actually structured. Some banks or NBFCs may compound differently, so always confirm the compounding frequency with your specific FD provider.

What does the break-even year in the results mean?

It's the year in the yearly breakdown table where the SIP corpus and FD value cross over — before that year, one option has more value; after it, the other does. This is useful for understanding not just the final winner, but how the two paths compare at any point if you needed to withdraw early.

Should I choose based on this calculator alone?

No — this tool compares maturity value assuming both instruments run exactly as entered. Real decisions should also weigh risk tolerance (FD is capital-guaranteed, SIP is market-linked and can lose value in the short term), liquidity needs, and tax treatment, which this calculator does not model.