The full guide
How much house can you afford in Sri Lanka? LTV, DSR, and the costs nobody budgets for
Reviewed and updated July 16, 2026 · Written for Sri Lankan investors and borrowers
The affordable price of a house in Sri Lanka is set by two constraints working together: how much cash you can put down, and how large a monthly repayment your income can carry. Banks formalize these as the loan-to-value ratio — typically financing 70–80% of the property value — and the debt service ratio, usually capping repayments at 40–60% of verifiable income.
Whichever constraint binds first sets your ceiling. This guide works through both with a full rupee example, then covers the transaction costs — stamp duty, legal fees, valuation — that routinely add several percent to the real price, and why you should stress-test the repayment before you sign anything.
Constraint one: the down payment (LTV)
At 75% LTV on a Rs. 25,000,000 property, the bank lends Rs. 18,750,000 and you must bring Rs. 6,250,000 in equity — before any transaction costs. Note that banks lend against their own valuation of the property, not necessarily the agreed price: if the bank’s valuer says Rs. 23 million, the loan is 75% of that, and the gap is yours to fund.
Working backwards is often more useful: if your available cash for a down payment is Rs. 5,000,000, then at 75% LTV your maximum property price is Rs. 20,000,000 — assuming your income supports the resulting loan.
Constraint two: the repayment (DSR)
The Rs. 18,750,000 loan at an illustrative 11% per annum over 20 years costs about Rs. 193,500 a month. At a 40% DSR that requires verifiable net income of roughly Rs. 484,000 a month; at 50%, about Rs. 387,000. If your household income is Rs. 350,000, this loan does not fit — either the price, the term, or the down payment must change.
The calculator runs both constraints simultaneously: enter your income, existing commitments, savings, and an interest rate, and it returns the property price at which both the LTV and DSR limits are satisfied.
Stress-test before you commit
Housing loans in Sri Lanka run 15–25 years, and most carry variable rates repriced off benchmarks such as AWPLR. A loan that fits at today’s rate can stop fitting after a rate cycle. Rerun the example at 14%: the payment on the same loan jumps to about Rs. 233,000 a month — roughly Rs. 39,500 more, every month. If that stressed payment pushes you past a comfortable share of income, buy a cheaper property or bring a bigger down payment.
The costs beyond the price tag
Property transactions carry material one-off costs that must come from savings, since banks generally do not finance them. Budget for them explicitly — on a Rs. 25 million purchase they can approach Rs. 1.5 million.
| Cost | Typical basis | Illustrative amount |
|---|---|---|
| Stamp duty on transfer | Currently 3% on the first Rs. 100,000 and 4% on the balance | About Rs. 999,000 |
| Legal fees and title search | Often around 1% of the price, varies by lawyer | About Rs. 250,000 |
| Bank valuation and processing | Fixed fees set by the bank | Tens of thousands of rupees |
| Mortgage documentation | Stamp duty and charges on the loan security | Depends on loan size |
Getting approval-ready
Banks verify income through salary slips, bank statements, and employer letters, and they pull your CRIB report — existing leases, cards, and loans reduce the repayment capacity available for the housing loan. Clearing small facilities before applying can raise your ceiling meaningfully.
Finally, leave room to live. A bank may approve a 55% DSR, but a twenty-year commitment at that level means every rate rise, school fee increase, or income dip lands on a household with no slack. Many buyers deliberately cap repayments near 35–40% of income and keep an emergency fund of several months of expenses on top — the calculator lets you set your own DSR rather than borrowing to the bank’s maximum.
Keep the affordability decision separate from the property decision. A comfortable repayment does not cure a defective title, an unapproved extension, an apartment with unpaid management dues, or a valuation far below the agreed price. Make the offer conditional where possible, engage your own lawyer for title work, and obtain the bank valuation before committing non-refundable cash. Prepare a post-purchase budget for repairs, rates, insurance, moving, and furnishing too. The defensible ceiling is the lower of the calculator’s result and the price that still leaves those costs plus the emergency reserve untouched.
Sources & further reading
This guide is educational and reflects publicly available rules and market conventions at the review date. Tax rates, bank rates, and regulations change — verify current figures with the institution or the Inland Revenue Department before making a financial decision. Nothing here is financial, tax, or investment advice.