Spreadsheet budgets are great in theory and terrible in practice. Most people give up after two weeks because the overhead of tracking every rupee is exhausting. The 50/30/20 rule sidesteps all of that.
The three buckets
50% of your post-tax income goes to needs — rent, groceries, utilities, transport, insurance, minimum loan EMIs. 30% goes to wants — dining out, streaming, travel, hobbies. 20% goes to savings and investments — SIPs, emergency fund, debt repayment beyond the minimum.
Why it works
It's a forcing function. If rent and essentials are eating 65% of your income, you can see immediately that your needs are out of whack — either your income needs to grow or your cost structure needs to shrink. If your wants are 45%, you know where the leak is without tracking every coffee.
Customizing the ratios
If you live in a high-cost city, 50/30/20 may need to become 60/20/20 temporarily. If you're aggressively paying down debt, it could be 50/20/30. What matters is that every rupee has an assigned purpose before the month begins, not that you match the textbook numbers.
Automate the savings
Set up auto-debit for your 20% bucket on payday — SIPs, RDs, PPF, whatever. If the money never touches your spending account, you can't accidentally spend it. Our SIP calculator shows what that discipline compounds into over 15–20 years.