Introduction: The Decade of Decisions
I often say: your 20s are for experimenting, but your 30s are for building. As someone who’s sat across countless clients in my office—from software engineers in Bengaluru to entrepreneurs in Mumbai—I’ve realised one truth: the financial decisions you make in your 30s set the tone for the next 30 years of your life.
I’ll be honest—when I entered my own 30s, even as a banker-turned-planner, I wasn’t immune to money slip-ups. That’s the thing about financial mistakes in this decade—they don’t always scream “danger” in the moment, but they quietly steal from your future.
Here are the most common ones I see—and have sometimes experienced myself—and how you can choose differently.

Table of Contents
Mistake 1: Living as if the Paycheck Will Never Stop
I still remember a friend of mine, a tech professional, who bought a ₹70 lakh apartment the moment he turned 32—loan EMI consuming nearly 60% of his salary. It worked fine until layoffs hit in his sector. Suddenly, what looked like “affordable” became a trap.
In our 30s, salaries rise, bonuses feel rewarding, and it’s tempting to live bigger. But careers aren’t bulletproof.
What I do now: I keep my fixed expenses below 40% of my income. Lifestyle can grow, yes—but only after investments are locked in.
Mistake 2: Treating Insurance Like an Afterthought
Back in my banking days, I often met young couples with children who had taken insurance policies that were either too small or too complicated to serve their purpose. A ₹5 lakh term cover looks fine at 25, but at 35 with dependents, it’s barely a band-aid.
What I learned: Insurance is not about “returns.” It’s a safety net. I fixed this for myself by buying pure term insurance worth 15× my annual income, plus a health cover outside of my employer plan.
Mistake 3: Investing Without a Goal
In my early years, I too was guilty of starting SIPs “because everyone does.” Many of my clients in their 30s arrive with the same mindset—funds scattered everywhere with no link to actual goals.
When money has no purpose, it rarely compounds in the right direction.
How I shifted: I started linking SIPs to goals. Example: one SIP for my retirement corpus, one for my child’s education, one for travel dreams. Suddenly, the motivation to stay consistent grew stronger.
Mistake 4: Ignoring Retirement (Because It Feels Too Far)
At 30, retirement looks like a distant planet. But I’ve run enough retirement calculators to know: every year of delay costs you lakhs in lost compounding.
One client of mine in his 30s said, “I’ll start after buying my home.” Ten years later, he’s still paying EMIs and retirement savings haven’t begun.
What I practice: I don’t see retirement as “optional savings.” For me, it’s the biggest goal, and it started the moment my career got serious.
Mistake 5: Mixing Emotions With Investments
One of my clients, a passionate investor, once held onto a stock because it was his “first purchase” in the market—even when it was underperforming for 5+ years. Another invested in land simply because his father told him land always appreciates.
Our 30s are when emotions—family expectations, peer pressure, fear of missing out—often override financial logic.
My anchor: I remind myself (and my clients) that numbers don’t have feelings. If something doesn’t fit my plan or data shows it’s not working, I let it go.
Mistake 6: Neglecting Emergency Funds
When my son was born, I realised the value of an emergency corpus. Hospital bills, sudden travel, or job breaks—these things hit harder in your 30s when responsibilities rise.
Yet, most people skip it because it doesn’t give “returns.” But skipping it often means breaking investments or going into debt.
My approach: I keep at least 6 months of household expenses in liquid funds. It’s not exciting, but it’s peace of mind.
Frequently Asked Questions
1. Why are the 30s such a crucial decade for financial planning?
Because your 30s usually come with rising income and rising responsibilities—marriage, kids, EMIs, and career changes. If you don’t align your money well now, it becomes very hard to catch up in your 40s and 50s.
2. What percentage of my income should I ideally save in my 30s?
Aim for at least 20–30% of your take-home pay. If you’re late to start, push for closer to 30–40%—especially towards retirement and long-term goals.
3. Is buying a house in your 30s always a mistake?
Not at all. But the mistake is over-stretching EMIs (more than 40% of your income). A home should bring security, not financial stress.
4. How much health and life insurance do I need in my 30s?
Health insurance: A ₹10–20 lakh family floater (outside your employer plan).
Life insurance (term plan): At least 10–15× your annual income, especially if you have dependents.
5. Can I still recover if I’ve already made some of these mistakes?
Yes, absolutely. I’ve helped many clients in their mid-30s and even 40s re-align their finances. The key is not to wait any longer—start correcting today.
Closing Thoughts: The Silent Cost of Delay

The truth is, mistakes in your 30s don’t hurt immediately. You can overspend, underinsure, delay retirement, and life may still look smooth for a while. But the silent cost of these missteps appears in your 40s and 50s—when goals arrive, children grow, and retirement no longer feels far away.
I’ve lived some of these lessons personally and witnessed many through my clients. If I could tell my 30-year-old self one thing, it would be this: money mistakes are not just about money—they’re about freedom, peace of mind, and choices you may or may not have later.
So as you step through this decade, don’t just earn more—choose better.