Home loan EMI math in NPR: what you actually pay for a Rs 1 crore house in Nepal

The bank manager slid the term sheet across the desk. Rs 80 lakh, 9.5%, 20 years, EMI of रू 74,557. My friend asked one question: "Total interest?"

The manager paused, did the math, and wrote: Rs 98.9 lakh. More than the loan itself.

That is the part nobody puts on the marketing brochure. The EMI looks reasonable. The total interest, written out, is a different conversation.

This post is the EMI math written down — the formula, the levers that actually move it, the NRB rules that decide how much you can borrow, and what the floating-rate reset does to your plan over a 20-year horizon.

The EMI formula (and why every Nepali bank's calculator agrees)

Every commercial bank in Nepal uses the same formula:

EMI = P × r × (1+r)^n / ((1+r)^n − 1)

Where:

• P = loan principal (the amount the bank actually disburses, after down payment)
• r = monthly interest rate (annual rate ÷ 12)
• n = tenure in months (years × 12)

A worked example matches what banks publish on their public EMI tools.

A Rs 20 lakh loan at 9% annual for 4 years (48 months):

• r = 9% ÷ 12 = 0.75% per month = 0.0075
• n = 4 × 12 = 48
• EMI ≈ Rs 49,750

This is the same number Global IME, Nabil, NMB, Everest, Kumari, and Prabhu's online EMI calculators will return for the same inputs. The formula is shared; the differences are in the rate, the fees, and the prepayment terms.

The four numbers that decide your EMI

Strip away the marketing and a Nepali home loan is determined by four numbers:

1. Loan principal (P). What the bank actually disburses. This is property value minus your down payment, capped by NRB's LTV ceiling.
2. Annual interest rate. Your bank's base rate + margin. The base rate moves; the margin is fixed at sanction.
3. Tenure (n). Typically 5 to 30 years in Nepal. The maximum is bounded by your age at maturity — most banks cap it at age 65 or 70.
4. Reset frequency. How often the floating rate is recalculated — usually quarterly or yearly.

Change any one, and the EMI changes. Change tenure or rate by a single percentage point, and the total interest paid changes by a multiple of that.

The LTV cap: how much can you actually borrow?

A first-time home buyer in Nepal can borrow up to Rs 30 million at an LTV of 80%; second/third home buyers are capped at around 70%; non-residential property at 50%. This is where most first-time buyers get the size of their loan wrong. Nepal Rastra Bank (NRB) regulates the loan-to-value (LTV) ratio — the maximum percentage of the property's assessed value the bank can lend.

For FY 2082/83 (the current cycle), NRB's monetary policy raised the home-loan ceiling and the LTV for first-time buyers:

Borrower type	Max loan	Max LTV
First-time home buyer (residential, ≤3,000 sq ft, no prior housing loan, no rental-income reliance)	Rs 30 million (raised from Rs 20 million)	Up to 80%
Second or third home	—	~70%
Standard residential (older NRB Directive 2079 baseline)	—	Up to 60%
Non-residential (commercial, etc.)	—	Up to 50%

Some banks add their own internal caps. Global IME, for example, finances up to 50% of fair market value inside Kathmandu Valley and 60% outside, even when NRB rules technically allow more — banks can be more conservative than NRB, never more aggressive.

So before any EMI math, the first question is: given my situation, what is the maximum loan I can actually get, and what is my mandatory down payment?

A first-time buyer eyeing a Rs 1.2 crore residential property under the 80% LTV ceiling would put Rs 24 lakh down and borrow Rs 96 lakh. A non-first-time buyer at 70% LTV puts Rs 36 lakh down and borrows Rs 84 lakh. A non-residential buyer at 50% puts Rs 60 lakh down and borrows Rs 60 lakh. Same property, three very different loan sizes.

The 80%-of-disposable-income rule

The other constraint nobody mentions until the term sheet stage: EMI cannot exceed 80% of your disposable income. Global IME publishes this explicitly; most other Nepali banks apply something close.

Disposable income = gross income − tax − mandatory deductions (PF/SSF, CIT auto-deduction, anything else withheld at source).

A salaried borrower with Rs 1,50,000 gross/month and roughly Rs 35,000 in tax + SSF + CIT has disposable income around Rs 1,15,000. The EMI ceiling is Rs 92,000. Combined with the LTV cap, this often becomes the real constraint on how big a loan you can take, not the property's value.

This rule also explains the practical answer to "should I take 15 years or 20?" If 15-year EMI exceeds your 80% cap, the bank will push you to 20 — not because longer is better, but because their underwriting requires it.

Total interest paid: the number that actually matters

EMI is the headline. Total interest paid is what you really care about over a 20-year horizon. Let me run the same loan at four common Nepali rates and tenures.

Loan: Rs 80 lakh principal.

Rate	Tenure	EMI	Total paid	Total interest
9%	15 yr	Rs 81,141	Rs 1,46,05,303	Rs 66,05,303
9%	20 yr	Rs 71,978	Rs 1,72,74,809	Rs 92,74,809
11%	15 yr	Rs 90,917	Rs 1,63,65,022	Rs 83,65,022
11%	20 yr	Rs 82,571	Rs 1,98,17,138	Rs 1,18,17,138

(Standard EMI formula — these match what any Nepali bank's calculator will return for these inputs.)

A few things worth pausing on:

• Going from 15 to 20 years at 9% lowers your EMI by Rs 9,163/month but adds Rs 26.7 lakh in lifetime interest.
• Going from 9% to 11% at 20 years raises EMI by Rs 10,593 and adds Rs 25.4 lakh in lifetime interest.
• At 11% over 20 years, total interest exceeds the principal. You pay back roughly Rs 2 for every Rs 1 borrowed.

The take-away is simple: tenure and rate move total interest in crores, not lakhs. EMI math is a slow leak; multiplied by 240 months, it adds up to the price of a second house.

Floating rate: the lever you don't control

Here is the part most first-time borrowers in Nepal don't fully internalise. Almost every home loan in Nepal is floating.

Your contract states something like: "Interest rate = Base Rate + 4.50% margin, reset quarterly." The margin is yours for the life of the loan. The base rate is not — it moves with NRB's policy direction and the bank's own cost of funds.

NRB's policy repo rate currently sits at 4.25%, the bank rate at 5.75%, and the average lending rate across Nepali commercial banks is around 7.00%. Add a margin and home loans currently fall in the 8–14% range depending on bank and customer profile.

When the base rate moves, your EMI is recalculated at the next reset:

• Most banks adjust the EMI, keeping the tenure the same.
• Some banks adjust the tenure, keeping the EMI the same — meaning a 0.5% rate hike can quietly add years to your loan without you ever seeing a higher monthly payment.

Always ask which one your bank does. The second variant is the one that catches people: their EMI never changes, but their loan ends up running 22 or 24 years instead of 20.

A "fixed-rate home loan" in Nepal usually means fixed for the first 1–3 years, then converting to floating. Read the rate-fixation clause carefully. A genuinely fixed 20-year home loan is essentially unavailable in the local market.

Prepayment: the lever you do control

Prepay early, prepay often — the same Rs 1 lakh prepayment in year 2 of a 20-year loan saves roughly 20–30× more interest than the same prepayment in year 18. Prepayment is the single biggest lever you have over total interest paid. The math is non-obvious because it is heavily front-loaded.

In any Nepali home loan, the first few years of EMIs are mostly interest. On a 20-year, 9% loan, the first EMI is roughly 75% interest, 25% principal. A prepayment in year 2 reduces the principal that the next 18 years of interest will compound on. A prepayment in year 18 saves only the next 2 years.

A worked example. Same Rs 80 lakh loan at 9% for 20 years. Base case total interest: Rs 92.75 lakh.

• Add Rs 1 lakh prepayment at end of year 2 → loan closes about 7 months early, saves roughly Rs 4–5 lakh in lifetime interest.
• Add Rs 1 lakh prepayment at end of year 10 → saves roughly Rs 1.2–1.5 lakh.
• Add Rs 1 lakh prepayment at end of year 18 → saves only about Rs 15,000.

Same Rs 1 lakh, very different outcomes depending on when you put it in.

The prepayment penalty matters here too. Many Nepali banks charge 0.5–2% of the prepaid amount when prepayment is from a third-party source (refinancing, family loan, etc.). Prepayment from your own income is often penalty-free, but not always. The exact clause is in the loan agreement — the line you should read at sanction is usually titled "Pre-payment / Pre-closure charges".

A 1% prepayment fee on a Rs 1 lakh prepayment is Rs 1,000. If the prepayment saves Rs 4 lakh in interest, the fee is irrelevant. If it saves Rs 15,000 (late in the loan), the fee starts to bite. So:

Prepay early, prepay often, and check the penalty clause once.

Where the bonus, increment, and side income should go

A practical rule for Nepali salaried home-loan holders:

1. Annual increment. If your EMI was Rs 71,978 last year and you got a 10% raise, push the EMI up by, say, Rs 5,000–10,000/month as a standing prepayment instruction. Most banks will allow this without paperwork; the surplus is treated as principal repayment at the next reset.
2. Bonus / Dashain bonus. A round-figure prepayment of Rs 1–2 lakh once a year, in the first 5–7 years of the loan, will quietly knock 2–4 years off your tenure.
3. Side income / freelance USD earnings. Covered in the remote-work post. Ring-fence a portion specifically for prepayment.

Resist the temptation to invest these surpluses in NEPSE while the home loan is running. NEPSE may beat 9% in some years and lose to it in others. A 9% home loan prepayment is a guaranteed 9% return, tax-free, with zero volatility. Very few investments match that risk-adjusted profile.

Tracking the loan in Kharchapatra

One important detail: a home-loan EMI is not really a single expense. It is two — interest (genuine cost) and principal (transfer to your home equity). Lumping them together as "Loan EMI" is fine for cashflow tracking, but distorts your savings rate.

A cleaner setup:

• Create an account called Home — Equity to represent the principal you have repaid.
• Each month's EMI is logged as a transfer split: principal portion → Home — Equity, interest portion → an "Interest paid" expense category.
• The bank usually publishes an amortisation schedule at sanction that gives you the principal/interest split for each EMI.

It feels like extra friction, but the dashboard ends up honest: interest is a real expense; principal repayment is savings. After three years of payments, you can see exactly how much you've actually paid in real cost vs how much you've built in equity. Most people are surprised by the answer.

A decision framework

Where the next decision goes:

• Considering the loan size? Start from the EMI cap (80% of disposable income), not the property price. Work backwards to your loan ceiling.
• Choosing tenure? Pick the shortest tenure where the EMI fits comfortably under your cap with room for life. Don't auto-default to 20 years.
• Choosing the bank? The base rate matters less than people think — they all move together. The margin and the prepayment clause are the two genuinely durable differences.
• Already in a loan? Set up monthly prepayments from increment. One annual lump-sum prepayment in the first 5–7 years. That is most of the value.

What to do this week

If you are about to take a home loan, three concrete actions:

1. Pull EMI quotes from three banks for the same principal and tenure. Compare base rate, margin, prepayment clause, and reset frequency side-by-side. The cheapest headline rate is not always the cheapest loan over 20 years.
2. Run your numbers through the formula yourself — even on a phone calculator. Don't just trust the bank's printout.
3. Decide your prepayment strategy before sanction, not after. If you know that every Dashain bonus will go toward prepayment, you can negotiate the prepayment-penalty clause with the bank up front, when you have leverage.

If you are already paying an EMI and want a second pair of eyes on your prepayment math, write to parjanya57@gmail.com. The next post in this series covers the dhukuti vs FD ladder question — a very Nepali decision that tends to come up the moment you have surplus liquidity.

This post is part of the Nepal Money Basics guide — the big-ticket-decisions section of the stack.