Budgeting sounds easy, right? But once money actually hits your bank account, things get blurry, savings shrink, wants grow, and financial goals feel distant.
You’ve probably heard of rules like 50/30/20 or save before you spend. But which of these actually work? And more importantly, which one is practical for you?
Let’s explore 6 popular budgeting strategies with real-life breakdowns.
1. Rule 50/30/20
This rule breaks down your post-tax income into:
- 50% for Needs – rent, groceries, utilities
- 30% for Wants – shopping, entertainment, travel
- 20% for Savings or Debt – EMIs, investments, emergency fund
If you earn ₹1 lakh monthly, ₹50K covers essentials like rent and groceries, ₹30K goes to lifestyle expenses, and ₹20K is set aside for savings or EMIs.
But here’s the catch:
Saving 20% sounds good—but is it enough to fund a comfortable retirement or big future goals?
Let’s say you save ₹20,000/month. That may not build the ₹1–2 crore you’ll need for retirement unless your returns are unrealistically high.
Instead, increase your savings rate as your income grows. Don’t follow static percentages, adjust based on your financial goals.
2. 20/4/10 Rule (For Car Buying)
Cars depreciate. Fast. This rule makes sure your car doesn’t eat into your future wealth.

Let’s say a person earning ₹1 lakh/month plans to buy a ₹6 lakh car. With a 20% down payment of ₹1.2 lakh, the remaining ₹4.8 lakh loan at 9.00% interest for 4 years results in an EMI of ₹11,945, slightly above the 10% limit.
Try not to stretch EMIs. Stick to this rule to avoid stalling your savings while enjoying your drive.
3. 25x Retirement Rule
Want to stop working someday? Here’s a formula that shows how much you’ll need to retire:
Annual Expenses × 25 = Retirement Corpus
Because withdrawing 4% per year from your savings can help your money last ~30 years
Example:
If you plan to spend ₹10 lakh a year post-retirement, you need to aim for ₹2.5–3 crore in savings.
Customize it: Review your target every 2–3 years based on inflation, lifestyle, and life stage.
4. Buying Home Rule: 3/20/30/40
Buying a home is a big dream and a bigger financial responsibility. This rule keeps it affordable.

Let’s say a person earning ₹12 lakh/year plans to buy a ₹36 lakh house. With a 40% down payment of ₹14.4 lakh, the ₹21.6 lakh loan over 20 years at 8.5% interest results in an EMI of ₹18,745, well within the ₹30,000 (30%) EMI limit.
In reality, especially in metro cities, home prices often range between ₹70L-₹1 crore, nearly 5-6X of your annual income.
To manage this, you can increase the down payment, opt for a joint loan, or extend the tenure slightly to lower the EMI.
The goal? Own your home but not at the cost of your peace of mind.
5. Rule of 72
A quick way to estimate how long your money will take to double at a fixed interest rate:
72 ÷ Rate of Return = Years to Double

Just remember: It assumes fixed returns, which don’t apply to volatile investments like stocks or mutual funds, so results may not be accurate in real life.
6. 7-Day Rule
Before buying anything non-essential, wait 7 days and ask yourself:
- Do I really need it?
- How have I managed without it?
- Could I use this money for something better?
Most impulse cravings fade in a week. If not, you’ll know it’s a thoughtful buy, not an emotional one.
Keep a wish list. If an item still feels worth it after 7 days, go ahead and purchase it guilt-free.
Final Thought
These aren’t strict formulas. They’re frameworks to help you spend smarter, save better, and reduce money stress.
Pick one. Tweak it to suit your life. Try it for a month.
You'll see the difference in your money habits.