Chapter 4 of 10
Good Debt vs Bad Debt
Which loans build wealth and which destroy it.
Arjun bought his dream car at 27 — a Hyundai Creta, financed entirely with a ₹8 lakh loan.
He told himself it was an investment in his image and career, that arriving at client meetings
in a nice car would help close deals. Five years later, the car was worth ₹4 lakh.
He had paid ₹2.1 lakh in interest. He had spent ₹3 lakh on maintenance, insurance, and fuel
over what he would have paid for Uber. Meanwhile, his colleague Ramesh — who had taken a
home loan the same year — had built ₹18 lakh in equity on a ₹12 lakh EMI outflow.
Same loan concept, completely different outcomes. The difference? Good debt versus bad debt.
The Core Distinction
Good Debt, Bad Debt, and Ugly Debt
It helps to think in three categories rather than just two:
- Good Debt — builds future wealth or income (home loan, education loan for high-ROI career)
- Bad Debt — finances depreciating assets or consumption (car loan, personal loan for wedding or gadget)
- Ugly Debt — predatory, ruinous interest rates (payday apps, moneylenders at 3–5% per month, BNPL misused)
Payday loan apps in India can charge effective annual interest rates of 100–300%. Unorganised moneylenders charge 3–5% per month, which compounds to 36–60% per year. If you have borrowed from these sources, paying them off must be your absolute first financial priority — before emergency fund, before investments, before everything else. Do not take new loans to repay these.
Comparing the Four Main Debt Types
| Debt Type | Interest Rate (India) | What It Buys | Tax Benefit | Long-term Impact |
|---|---|---|---|---|
| Home Loan | 8.5–9.5% p.a. | Appreciating asset (property) | Yes — Sec 80C (principal) + Sec 24(b) (interest) | Positive — asset appreciation + forced savings |
| Car Loan | 9–12% p.a. | Depreciating asset (loses 15–20%/year) | None (unless commercial use) | Negative — car loses 50–60% value in 5 years |
| Education Loan | 9–13% p.a. | Human capital (skills & career) | Yes — Sec 80E (interest, 8 years) | Positive IF return on career justifies the cost |
| Personal Loan | 12–24% p.a. | Pure consumption (travel, wedding, gadget) | None | Very negative — high cost with no asset |
| Credit Card (revolving) | 30–48% p.a. | Current consumption on credit | None | Extremely negative — fastest wealth destroyer |
The True Cost of a Car Loan
- Loan amount: ₹5,00,000
- Interest rate: 9.5% p.a.
- Tenure: 5 years
- Monthly EMI: ~₹10,524
- Total amount paid: ₹6,31,440
- Total interest paid: ₹1,31,440
- Car purchased for: ₹7,00,000 (on-road, with down payment)
- Typical depreciation: Year 1 = 20%, Years 2–5 = 10–15%/year
- Car value after 5 years: approximately ₹2,80,000–₹3,00,000
- Loss in car value: ₹4,00,000–₹4,20,000
- Interest paid to bank: -₹1,31,440
- Depreciation loss: -₹4,10,000
- Total wealth destroyed: ~₹5,41,440 over 5 years
Compare: if Ramesh had invested ₹10,524/month in an equity SIP at 12% CAGR for 5 years instead, he would have ₹8.6 lakh — a difference of over ₹14 lakh in relative terms.
Personal loans in India come at 12–24% interest. There is almost no financial scenario where borrowing at 18–24% makes sense unless it is a genuine emergency where no other option exists. People routinely take personal loans for weddings, vacations, gadgets, and home renovation — all of which are either deferrable or can be done in a scaled-down form. If you have the discipline to repay a personal loan, you have the discipline to save for the same goal in advance.
The Education Loan — It Depends
Education loans occupy a middle ground. They are financing human capital — your skills and
earning potential. Whether they are "good debt" depends entirely on the return on investment.
- MBA from IIM at a cost of ₹25 lakh (loan: ₹20 lakh at 10.5% over 8 years)
- Pre-MBA salary: ₹8 lakh/year
- Post-MBA salary: ₹25 lakh/year
- Salary increase: ₹17 lakh/year — loan repaid in under 2 years of incremental income
- Verdict: Excellent investment
- MBA from a mid-tier B-school at a cost of ₹18 lakh (loan: ₹15 lakh at 11% over 8 years)
- Pre-MBA salary: ₹4 lakh/year
- Post-MBA salary: ₹5.5 lakh/year
- Salary increase: ₹1.5 lakh/year — would take 10+ years just to recover the interest cost
- Verdict: Bad debt disguised as education investment
The rule: expected salary increase over 3 years should comfortably exceed the total loan cost.
Credit card debt at 30–48% annual interest is the most expensive consumer debt in India. If you roll over even ₹10,000 on a credit card, you're paying ₹3,000–₹4,800 a year in interest for that one transaction. Always pay the full outstanding bill by the due date, never just the "minimum amount due." If you genuinely cannot pay the full amount, stop using the card immediately and treat it as a debt emergency.
Arjun is considering taking a ₹40 lakh home loan at 9% interest for 20 years. His friend says 'all loans are bad.' Which statement is most accurate?
Key Takeaways
- Good debt (home loans, productive education loans) builds assets or income; bad debt (car loans, personal loans, credit card debt) finances consumption or depreciating assets — the distinction is crucial for long-term wealth building.
- A car loan at 9.5% over 5 years on a ₹5 lakh loan costs ₹1.3 lakh in interest, while the car itself loses ₹4+ lakh in value — a combined wealth destruction of over ₹5 lakh.
- Credit card revolving debt at 30–48% annual interest is the most destructive force in personal finance — pay the full bill every month without exception.
- Education loans are good debt only when the expected salary increase clearly justifies the total borrowing cost — always calculate the ROI before signing.