Of all the decisions you make on a personal loan, tenure is the one that gets the least thought and deserves far more. Everyone fixates on the interest rate and the amount they’re borrowing. Meanwhile, the tenure, the number of months you take to repay, is quietly setting two things at once: what you pay every month, and what the loan ends up costing you in full. Choose well, and the EMI slots neatly into your budget. Choose badly, and you either squeeze your monthly cash flow or hand the lender lakhs in extra interest.
The mechanics point in one direction, always. A longer tenure shrinks the EMI but inflates total interest. A shorter tenure does the opposite: a bigger EMI and a lower total cost. Most borrowers never look at exactly how far each move goes. So let’s look at it with actual figures.
The Two Numbers Tenure Pulls Apart
A personal loan carries two costs that work against each other. The EMI is what leaves your account month after month. The total repayment is every one of those EMIs added up across the full tenure: your principal plus all the interest layered on top.
Tenure sits right in the middle of them. Spread the loan over more months and each EMI gets smaller, because the same principal is sliced into thinner pieces. But you’re also carrying the debt longer, so the interest keeps stacking and the total rises. Squeeze the tenure and the reverse happens: each EMI grows heavier while the total interest shrinks. No tenure minimises both. Picking one means deciding which of the two you care about more.
A Real Example: Rs. 5 Lakh at 12% p.a.
Figures make the point better than any explanation. Take a Rs. 5 lakh personal loan at 12% p.a., a realistic rate on a Bajaj Finserv personal loan, where interest starts from 10% p.a., and tenure spans 12 to 108 months. Watch how the EMI and total interest shift as the tenure stretches:
12 months: EMI Rs. 44,424; total interest ≈ Rs. 33,088
24 months: EMI Rs. 23,537; total interest ≈ Rs. 64,888
36 months: EMI Rs. 16,607; total interest ≈ Rs. 97,852
60 months: EMI Rs. 11,122; total interest ≈ Rs. 1,67,320
84 months: EMI Rs. 8,826; total interest ≈ Rs. 2,41,384
108 months: EMI Rs. 7,592; total interest ≈ Rs. 3,19,936
The contrast is hard to miss. Going from 12 to 108 months cuts your EMI by roughly 83%, Rs. 44,424 down to Rs. 7,592. But total interest climbs nearly tenfold, from around Rs. 33,000 to more than Rs. 3.19 lakh. That longer tenure buys you monthly breathing room, and the price of that comfort is steep.
Why a Longer Tenure Costs More
Interest on a personal loan builds on the outstanding principal for as long as the loan stays alive. A 12-month loan closes out before much interest has a chance to gather. A 108-month loan keeps a balance running for nine full years, with interest charged every month of that stretch.
That’s why total interest rises so sharply as tenure grows, even though the rate itself never budges. The lender isn’t charging more per rupee; you’re simply holding each borrowed rupee for far longer. Every extra year of tenure is one more year of interest on whatever principal you still owe.
Why a Shorter Tenure Is Not Always Better
The tempting conclusion, just pick the shortest tenure and be done, is a trap. That Rs. 44,424 EMI on a Rs. 5 lakh loan needs a monthly income comfortably north of Rs. 1.1 lakh to stay within safe limits. For most borrowers, an EMI that size would swallow nearly all their disposable income, leaving nothing for daily expenses, let alone an emergency.
The wiser move is to hold your EMI under 40% of your net monthly income; closer to 25–30% is better still. A tenure that produces a comfortable EMI shields you from the risk that actually matters: a missed payment. One missed EMI dents your CIBIL score and adds penal charges, and that does far more damage than the extra interest a longer tenure carries. Often, the comfort is worth paying the interest premium for.
Finding Your Right Tenure
The right tenure is the shortest one where the EMI still fits your budget without strain. Begin by working out the EMI you can genuinely absorb: take 30% of your net monthly income, then subtract whatever you already pay in existing EMIs. What’s left is your EMI ceiling.
From there, work backwards. Open the Bajaj Finserv personal loan EMI calculator on the website or the loan app and test different tenures against that ceiling. Enter your loan amount and rate, then move the tenure up or down until the EMI settles just below your limit. That tenure hands you the lowest total interest you can manage without overstretching your monthly cash flow.
Using Part-Prepayment to Get the Best of Both
You aren’t chained to a long tenure for good. Pick a longer tenure for the low, safe EMI, then make part-prepayments whenever surplus lands, a bonus, a tax refund, a windfall, and you effectively shorten the tenure and trim total interest without ever straining your monthly budget.
On Bajaj Finance’s Flexi variants (Flexi Term Loan and Flexi Hybrid Term Loan), part-prepayments cost nothing extra, and you can make them as often as you like. Each one lowers your outstanding principal, which drops the interest accruing from that point on. It’s a way to keep the monthly ease of a long tenure while capturing the interest savings of a short one.
The Bottom Line
Tenure is a lever, not a setting you leave alone. Lengthen it, and the EMI falls while total interest rises; shorten it, and the reverse holds. On a Rs. 5 lakh loan at 12% p.a., the gap between 12 and 108 months works out to roughly Rs. 2.87 lakh in total interest, enough to reward a deliberate choice over a default one.
Before you lock in any personal loan, run the numbers on the Bajaj Finserv EMI calculator and choose the shortest tenure whose EMI stays within 40% of your income. Keep part-prepayment on the table so you can compress the effective tenure later when cash allows. The target isn’t the lowest EMI in isolation, nor the lowest interest; it’s the tenure that keeps your month-to-month life comfortable while holding your total cost as low as that comfort will permit.
