After hundreds of retirement planning conversations, the same handful of mistakes come up again and again — almost always avoidable with the right planning, but expensive when left unaddressed. Here are the five we see most often.
Mistake 1: Planning for Today's Expenses, Not Future Ones
The single most common mistake is calculating a retirement number based on current monthly expenses, without adjusting for inflation over the years remaining until retirement. At 6% average inflation, expenses roughly double every 12 years. A retirement plan built around today's ₹50,000/month, without adjustment, will fall dramatically short 20 years from now.
The fix: Always project your expenses forward using a realistic inflation assumption before calculating your required corpus. Our Inflation Calculator and Retirement Corpus Calculator do this automatically.
Mistake 2: Underestimating Life Expectancy
Many retirement plans are built around a 15-20 year retirement horizon, based on outdated assumptions. With improving healthcare, planning for 25-30 years in retirement is now the realistic baseline for someone retiring at 60.
The fix: Plan conservatively for a longer retirement than you expect. Running out of money at 78 because you planned for exactly 75 is far worse than having a small surplus.
Mistake 3: No Plan for the Withdrawal Phase
Most investors have a clear accumulation strategy — SIPs, goal-based investing, disciplined saving — but no equivalent plan for how they'll actually draw down that corpus. They reach retirement with a healthy number and then improvise, which is exactly when costly mistakes happen.
The fix: Build your withdrawal strategy — including your bucket structure (see our guide to the ISG Framework) — years before you actually need the income, not after.
Mistake 4: Ignoring Sequence-of-Returns Risk
A portfolio earning the same average return can produce wildly different outcomes depending on the order in which good and bad years occur relative to your withdrawals. A market downturn in your first few retirement years, combined with regular withdrawals, can permanently damage a corpus that would have otherwise lasted decades.
The fix: Maintain a Stability bucket — typically 3-5 years of withdrawal needs in lower-volatility instruments — so you're never forced to sell growth assets at a loss during a downturn.
Mistake 5: Treating Withdrawal Rate as a Fixed Number
Many retirees pick a withdrawal rate once (often based on a rule of thumb from a different country's market) and never revisit it. Markets, inflation, and personal circumstances change — a withdrawal rate that was safe five years ago may no longer be, or may now be overly conservative.
The fix: Review your withdrawal rate and portfolio performance annually, and be willing to adjust — even slightly — based on how your corpus is actually performing relative to plan.
The Common Thread
Every one of these mistakes comes from treating retirement as a single event — a number to hit — rather than an ongoing process that needs structure both before and after the retirement date. The investors who avoid these mistakes aren't necessarily the ones who save the most; they're the ones who plan the transition as carefully as they planned the accumulation.
Build a Plan That Avoids These Mistakes
Use our Retirement Corpus Calculator to get a realistic, inflation-adjusted number, or our SIP + SWP Calculator to see your full journey from investing to income. For a personalized review of your specific plan, book a free consultation — we'll walk through where your plan is strong and where it needs adjustment.
