Home loan prepayment decisions are cashflow vs interest saved: banks often push EMI reduction because it feels good monthly — but keeping EMI constant and cutting tenure usually saves more total interest if you can afford it.
The setup
You received ₹5L bonus. Bank offers: (A) reduce EMI, keep tenure, or (B) keep EMI, reduce tenure. Most pick A; maths often prefers B.
The math with illustrative numbers
₹50L at ~8.5% for 20 years → EMI ~₹43,391. After 5 years, outstanding might be ~₹44.7L. Prepay ₹5L → outstanding ~₹39.7L. Option A (reduce EMI) might drop EMI to ~₹38,548 for remaining 15 years and save ~₹8.7L interest (illustrative). Option B (cut tenure) keeping EMI ~₹43,391 might shorten remaining tenure toward ~12 years and save ~₹14.8L interest (illustrative). Option B can save materially more because principal dies faster.
When option A (reduce EMI) makes sense
- Cashflow is genuinely tight and EMI/income is high-risk.
- You must free cash to close costlier loans first.
- Large upcoming expense / income uncertainty.
Edge case: invest the EMI savings
If option A saves ~₹4,843/month and you invest that at ~12% for 15 years, you can build a corpus — in some disciplined scenarios this can compete with option B’s interest saved. If you will spend the savings (common), option B wins cleanly.
Prepayment frequency strategy
Interest accrues on daily reducing balance — one large annual prepayment often beats spreading the same rupees into tiny monthly chunks (illustrative gap can be tens of thousands on ₹1L prepayment).
The year of prepayment matters
Prepaying early knocks down principal when interest component is highest. Late-tenure prepayments save less interest because EMI is mostly principal — sometimes investing surplus beats prepaying in final years.
The tax angle (24B)
If you are optimising old-regime 24B interest deductions, aggressive prepayment can reduce interest below deduction thresholds — model after-tax savings, not only gross interest saved.
Definitive rule-of-thumb
- Early loan years + comfortable cashflow → prefer tenure reduction.
- Tight cashflow → EMI reduction for survival.
- Late tenure → consider investing surplus if interest saved is small.
- Old regime with large 24B value → check tax interaction before huge prepays.
Finkoin tip
Model prepayment vs investing inside your goals on Finkoin — the best choice is the one you’ll actually follow for 5+ years.
Try it on Finkoin →FAQs
Clear answers in plain language. Educational guidance only.