Your retirement math may be completely wrong in 2026, says CA and explains why

For decades, retirement planning in India followed a familiar formula: save diligently, build a corpus, and rely on steady withdrawals after 60. But that comforting math may no longer hold up. Rising life expectancy and runaway medical costs are quietly reshaping what retirement actually requires. According to chartered accountant and financial educator Nitin Kaushik, many Indians are unknowingly planning for a version of retirement that simply does not exist anymore, and the consequences of getting the numbers wrong could be severe.

Kaushik recently flagged what he described as a growing mismatch between traditional retirement advice and the financial reality facing Indians today. He argued that many widely used rules of thumb fail to account for two major forces reshaping retirement planning: longer life expectancies and sharply rising healthcare costs.

Withdrawal rule

One of the most commonly cited retirement strategies globally is the 4% withdrawal rule, which suggests retirees can safely withdraw 4% of their investment corpus each year without running out of money. He believes a safer withdrawal rate is closer to 3%.



That difference may sound small, but it can dramatically change the size of the retirement corpus required. If a retiree withdraws Rs 4 lakh annually from a Rs 1 crore corpus, the number may appear sufficient at first glance. However, inflation steadily erodes purchasing power. Kaushik noted that within about ten years, the same Rs 4 lakh could effectively buy what roughly Rs 2.2 lakh buys today.

Healthcare costs

Healthcare costs make the challenge even more daunting. Medical inflation is higher than general inflaton, as per CA Nitin Kaushik. At that pace, a hospital procedure costing Rs 5 lakh today could climb to around Rs 27 lakh within 15 years. Without a dedicated medical buffer, even a single major illness could severely damage a retiree’s financial plan.

Because of this, Kaushik argues that retirement planning must include a substantial healthcare reserve. He suggests allocating at least 25% of the total retirement corpus specifically for medical needs, rather than relying solely on general savings or insurance.

Personal finance

Another widely shared benchmark in personal finance is the “300 times monthly expense” rule. Kaushik said that in the current environment, this should be viewed as a bare minimum rather than a conservative goal. For example, someone spending Rs 1 lakh per month today would need a retirement corpus of roughly Rs 3.5 crore to sustain that lifestyle. This estimate assumes retirement at age 60, life expectancy until 85, and investments generating only a modest real return of about 2% above inflation.

Longevity itself is a key factor reshaping the numbers. Many retirement plans historically assumed a 20-year retirement window. With increasing life expectancy, however, people could easily spend 25 to 30 years in retirement. A longer retirement period means the same savings must stretch much further.

Lifestyle

Kaushik also highlighted an emerging strategy among middle-class professionals: lifestyle arbitrage. Moving from expensive Tier-1 metros such as Bangalore to more affordable Tier-2 cities like Coimbatore can dramatically reduce monthly expenses. According to his estimates, relocation alone could cut living costs by around 40%, effectively extending a retirement portfolio’s lifespan by nearly a decade without requiring additional savings.

In Kaushik’s view, retirement security today is less about reaching a specific lump sum and more about managing a sustainable withdrawal rate alongside rising medical costs. When those two factors are ignored, the entire plan becomes fragile. After reviewing current cost-of-living trends for 2026, he warned that anyone not preparing for a 30-year retirement horizon with double-digit healthcare inflation risks building a financial plan that could collapse long before their retirement years are over.