EMI vs SIP — Opportunity Cost Calculator
Every EMI has a hidden cost: the wealth you would have built by investing that same monthly amount instead. This calculator shows both sides — what the loan really costs you (principal + interest), and what you'd have if you SIP'd the EMI amount at 12% equity returns for the same period. The gap is the real opportunity cost of borrowing.
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📈 SIP Alternative
The honest tradeoff
A Rs 50 L home loan costs you Rs 56 L in interest. Investing the same EMI in SIP at 12% would have built Rs 4.4 Cr. But — home loans get a Rs 2L/yr interest deduction under section 24(b) and the property typically appreciates 5-8% annually. The real-world tradeoff is closer than these raw numbers suggest. See guidance below.
Specific guidance — Home Loan
Home loans are India's "good debt" exception. Here's what's different versus a pure SIP comparison.
Related calculators & guides
Frequently asked questions
What is the opportunity cost of taking an EMI?
The opportunity cost of an EMI is the wealth you forgo by spending that monthly amount on loan repayment instead of investing it. If you SIP Rs 25,000 monthly at 12% for 5 years instead of paying a car EMI, you'd build Rs 20.5 lakh. That Rs 20.5 lakh is the real cost of the car beyond just the principal and interest paid.
Is taking a car loan worth it if SIP gives 12% returns?
Mathematically, no — but practically, sometimes yes. SIP returns are not guaranteed; equity can drop 30-40% in any single year. A car loan defers the joy of ownership for 4-5 years. The honest framing: every consumption loan trades future wealth for current utility. Calculate the exact tradeoff above and decide whether the asset's daily utility justifies it.
Should I prepay my home loan or invest in SIP?
Compare your home loan interest rate (typically 8.5-9.5%) against expected SIP returns (12% long-term equity average). If you're confident in the equity premium and have a 10+ year horizon, SIP wins mathematically. But pre-paying gives risk-free, guaranteed return equal to your loan rate and reduces stress. Most Indian financial planners suggest a 60-40 split — 60% to SIP, 40% to prepayment — for psychological balance plus mathematical efficiency.
Why is SIP better than personal loan repayment in this calculator?
Personal loans carry 11-18% interest, far above the 12% long-term SIP average. Taking a personal loan means paying interest that exceeds typical investment returns. The mathematical answer is almost always: don't take a personal loan unless it's a true emergency, and if you have an existing one, prepay it before starting new SIPs.
Does this calculator account for tax benefits of home loans?
The base calculation does not. Home loans in India give Rs 1.5 lakh principal deduction under 80C and Rs 2 lakh interest deduction under section 24(b) for self-occupied property (old regime only). For someone in the 30% slab, this adds Rs 1,05,000 effective annual tax saving — reducing the effective home loan rate by ~1-1.5%. The guidance block above mentions this nuance for home loans specifically.
What about asset appreciation on the loan-purchased item?
This matters most for home loans, where Indian real estate has averaged 5-8% appreciation over 20-year windows (location-dependent). For cars and bikes, the asset depreciates 50-70% over the loan tenure — so SIP almost always wins on raw math. The home loan calculator section above includes appreciation guidance.