Have you ever calculated your monthly expenses for 30 years from now? How much would you have to save in order to live a comfortable lifestyle then?
I had a riveting conversation about this with a friend of mine. He led me through an interesting thought experiment, which I’m going to share with you.
Assume you currently spend 1 Lakh rupees per month for your family to lead a comfortable lifestyle (Necessary Expenses + Other Expenses like Travel and Shopping). On taking into account an Inflation Rate of 6%, you would need to spend approx. 5.7 Lakh rupees per month to be able to afford a similar lifestyle 30 years from now. FIVE LAKHS AND SEVENTY THOUSAND RUPEES PER MONTH.
What. How?
100 Rs now has a certain value -> It can buy you x goods. With every passing year, the goods and services you can get for 100 Rupees will keep reducing. The purchasing power of a certain currency declines over time, because of the increase in price of the x goods that you buy. This phenomenon is called Inflation. Inflation Rate is not fixed per year, but usually ranged between 5.5% to 8% in India. At 8% Inflation, you would need 10x the amount you spend per month currently to maintain a similar lifestyle then.
Inflation and Purchasing Power are terms we learn pretty early on, but I had never actually done the math till last year or realised how much the compounding effect of inflation was.
Let’s come back to the example I used. Assuming you don’t intend to work 30 years from now, you would have to rely on income from other sources to generate 5 lakhs. The sources could be:
- Interest from your savings and investments
- Income from any real estate holdings
- Income from business
- Dipping into your actual savings (This should be a last resort for regular expenses)
Since it’s easiest to generate interest from your savings, I’ll deep dive into that. Assuming a inflation rate of 6%;
- If you’re getting 10% interest on your investment, you would need a total amount of 5 crores invested
- On the conservative side, at 8% interest on your investment, you would need a total amount of 6.25 crores invested
Compounding = awesome
Now this might seem like a lot of money, but there’s a silver lining. Compounding works the other way too! Any interest on savings you make will compound over a long period of time
If you save 1 Lakh Rupees per month for 30 years, assuming an interest rate of 8% per annum
Principal: 3.6 Crore Rupees
Final Amount (If you don’t touch the principal): 13.59 Crore Rupees
Try and maximise your savings. The urge to spend on things we don’t need is real, believe me, I’ve felt it. But in most cases, money gives better returns saved than spent.
Also don’t buy something that you cannot afford. Credit card users, I’m looking at us. Create a fund for something expensive that you would like to possess. Mull over the decision. Do not buy it with your credit card in the hope that you can pay for it in installments. Lavanya Mohan does a fantastic job of talking about this and other money related stuff in her blog, Pennmoney
But when should I start saving?
Ideally as soon as possible. Start saving when you start earning. If you have kids, teach them to save before they start earning. Don’t hesitate to use the money you save to invest in yourself. Nothing like it. But your expenses will only keep increasing over time. Your dependants might increase over time. So there’s no time like right now to save. Here’s stuff I do:
- Save first, spend later
I have a standing instruction with my bank to send money to some recurring deposits at the start of the month. Most of my SIPs (Systematic Investment Plans) and mutual funds are also paid for at the beginning of the month. So now, only money left over is used for expenses. - Buy stock
No, I’m not going to tell you what stock to buy. Set up a demat account and ‘shop’ for stock. That satiates my need to shop to a certain degree, and it’s nice to see returns over a period of time. - Mull over big purchases
If there’s a piece of jewellery or an expensive outfit I like, I like sleeping over it. I spend several months thinking about purchases that I don’t immediately need to make. The end result is that I’m a lot happier when I finally put my foot down and make the purchase, and I seldom make big ticket purchases I regret.
I used 1 lakh for ease of depiction , I’m linking a compound interest calculator by Scripbox. Feel free do add the right numbers for you and make similar calculations. Inflation rates are also different in different countries. Feel free to assume the right inflation rate and proceed. Linking an inflation calculator too for those of you who want to try this out with other inflation rates.

‘Farmers were so hospitable, they treated evacuees very well. They share all that was bitter and sweet with us. Those who had large houses would receive evacuees. Poor households that couldn’t take evacuees wished they could help. They usually came to give us sweet potatoes and yams.’





