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Retirement math mistakes: How small errors today can derail your future plans

Planning your retirement is more than a numbers game — avoid these common mistakes to secure your golden years.

October 05, 2025 / 11:41 IST
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Retirement planning

Projecting life expectancy and retirement needs

The largest retirement planning mistake is estimating that you'll live too short a lifespan. With growing life expectancy, you might live 20–30 years or more in retirement. Most people estimate their retirement corpus on the basis of a shorter life, and that may tempt depletion of the corpus. One has to account for not just living expenses, but also medical bills, altered habits, and inflation for decades. Underestimating those can lead to a critical shortfall in retirement.

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Overlooking inflation and altered costs

Retirement planning most often fails due to inflation not being factored in. Inflation consumes your savings account, and ₹1 crore at the present time will have little purchasing power after 20 years. Not factoring in inflation could make your retirement corpus insufficient to maintain your lifestyle. Incorporate realistic inflation levels when estimating retirement needs and invest in those instruments giving returns over inflation to safeguard your savings.