SIP Delay Cost Calculator
See exactly how much wealth you lose by delaying your SIP start. The math runs instantly in your browser — and the result is usually shocking. No sign-up, no data leaves your device.
Delay Cost Summary
Chart shows corpus if you start today (purple) vs if you delay (gold).
Growth Over Time
Year-by-Year Breakdown
| Year | Invested | Returns | Total Value | Growth % |
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Scroll horizontally to view all years. Values are projected based on the inputs above.
What is SIP delay cost?
SIP delay cost is the wealth you lose by postponing the start of your Systematic Investment Plan. It is one of the most overlooked concepts in personal finance, because the cost is invisible — you never see the money you could have made. But the math is brutal: even a one-year delay can shrink your final corpus by 10–15%, and a five-year delay can cut it nearly in half.
The reason is compounding. The earlier you start, the longer each rupee has to grow. When you delay, you are not just losing the contributions you would have made during the delay period — you are losing the compounding on those contributions for the entire investment horizon. That is why the cost of delay grows non-linearly: a 1-year delay costs more than 1/20th of a 20-year corpus.
The math behind SIP delay cost
To calculate the delay cost, we compute two scenarios. First, the future value of a SIP started today for the full investment horizon (let's say 20 years). Second, the future value of the same SIP started after a delay (so it runs for 20 years minus the delay period). The difference between these two values is the delay cost — the wealth you forfeit by waiting.
For example, consider a ₹10,000/month SIP at 12% expected return over a 20-year horizon. Started today, the future value is approximately ₹98.9 lakh. If you delay by just 12 months, the SIP runs for only 19 years, and the future value drops to approximately ₹87.7 lakh. The delay cost is ₹11.2 lakh — more than 11% of your potential corpus — for a single year of waiting. That ₹11.2 lakh loss is roughly equal to 9 years of monthly contributions, all gone because of a 12-month delay.
The non-linearity becomes even more striking with longer delays. A 5-year delay (starting at year 6 instead of year 1) shrinks the corpus from ₹98.9 lakh to roughly ₹50.6 lakh — a 49% loss. A 10-year delay shrinks it to roughly ₹16 lakh, an 84% loss. The lesson is simple: time, not timing, is the most important variable in long-term investing.
Why "I will start next year" is the most expensive sentence in personal finance
Most people do not delay their SIPs because they are sceptical of investing — they delay because life is busy, the paperwork feels tedious, or they want to "wait for the right time." The right time, of course, never comes. There is always a reason to wait: a wedding, a job change, a market dip, an upcoming bonus.
The SIP delay cost calculator exists to make this abstract cost concrete. When you see that delaying by 12 months costs you ₹11 lakh in future wealth, the friction of registering a SIP suddenly feels trivial by comparison. The paperwork takes 15 minutes. The KYC takes a day. The cost of not doing it is many lakhs of rupees.
This is also why "I will start with a bigger amount later" is a flawed strategy. Starting small today beats starting big tomorrow. A ₹5,000/month SIP started today will almost always outperform a ₹10,000/month SIP started 3 years later — because the early start gives every rupee a longer compounding runway.
Behavioural reasons people delay SIPs
Understanding why we delay is the first step to overcoming it. The most common reasons are:
- Market timing: "The market is at a high, I will wait for a correction." Historically, time in the market has beaten timing in the market over any 10+ year horizon in India. Waiting for corrections usually means missing the bulk of the upside.
- Perfectionism: "I want to research the perfect fund before I start." This is a trap — there is no perfect fund, and the cost of waiting for one is enormous. Start with an index fund today; refine later.
- Income uncertainty: "What if I lose my job? I do not want to commit to a SIP." You can pause SIPs with most fund houses — there is no penalty. The flexibility exists precisely for this reason.
- Procrastination: "I will set it up this weekend." This is the most common reason, and the most insidious, because each weekend of delay adds up. Automate the SIP setup — do it now, while you are reading this.
How to use this calculator well
The best use of this calculator is motivational. Plug in your age, the SIP amount you are considering, and a realistic retirement age. Then change the delay slider from 0 to 12 to 36 to 60 months, and watch the delay cost climb. The number you see is the price of your hesitation — paid in future wealth you will never have.
If you are still deciding whether to start a SIP today or wait, the calculator's answer is unambiguous: start today. Even ₹500/month started today will outperform ₹5,000/month started three years from now, given a long enough horizon. The compounding of early contributions is that powerful.
What this calculator does NOT account for
As with all SIP calculators, this is a projection tool based on assumed constant returns. Real markets are volatile, and actual returns will vary year to year. The calculator shows nominal future value, not real purchasing power — ₹1 crore in 20 years will buy roughly what ₹30–35 lakh buys today, given 5–6% Indian inflation.
The calculator also assumes that the delayed SIP would have earned the same return as the early SIP. In reality, the delayed SIP earns returns for fewer years, which is exactly why the corpus is smaller. The delay cost reflects both the missed contributions during the delay period and the lost compounding on those contributions for the entire horizon.
For more on the cost of waiting and how to start investing today, read our beginner's guide: What is a SIP? A Complete Beginner's Guide.