Debt burden ratio: how UAE banks work out how much you can borrow

Most people start a mortgage conversation with one question: how much can I borrow? The answer depends less on the price you like and more on how much of your income is already committed each month. UAE lenders measure that with the debt burden ratio (DBR), the share of your income that goes to debt repayments, including the new mortgage.

This article explains how the ratio works, why lenders test your finances at a higher interest rate than the one you are offered, and how to estimate your own position before you speak to a bank.

The 50% limit set by the Central Bank

The Central Bank of the UAE sets the maximum DBR for mortgage lenders at 50% of gross salary and any regular income from a defined and specific source. Lenders must not treat 50% as an automatic target. The regulation asks them to take each borrower’s circumstances into account, so a lender can approve less than the maximum.

Only reliable, sustainable income counts. The regulation says bonuses and other non-standard or temporary income should be discounted, or excluded if they are not guaranteed. Repayments must come from salary or verifiable business or rental income. End-of-service benefit cannot be used to repay a mortgage.

Why banks stress test at a higher rate

Lenders must assess whether you could keep up with repayments if interest rates rose. The regulation requires them to stress test the loan 2 to 4 percentage points above the current rate, depending on where rates sit in the cycle. If your offer starts with an introductory rate, the stress test uses the rate that applies once that period ends.

This is why the amount you are approved for can be lower than the figure you see in a calculator at today’s rate. It is a safety margin, not a judgement of your character.

A worked example

Suppose you earn a gross salary of AED 30,000 a month and already repay a car loan of AED 1,500 a month. The DBR limit allows total debt repayments of 50% of income, which is AED 15,000. After the car loan, AED 13,500 a month is left for a mortgage.

Read across the table and the point is clear. A lender that stress tests at +3 points would approve roughly AED 1.83 million on these numbers, not the AED 2.43 million a simple calculation at 4.49% suggests. Other limits can also apply: the loan-to-value rules, and for an expatriate buying a first home, a maximum financing amount of seven times annual income.

What to do before you apply

1. 1
   List every monthly commitment

   Car and personal loans, credit card minimum payments and any other repayments. Lenders may count these in full, even if you rarely use the card.

2. 2
   Check whether you could repay at a higher rate

   Work out the payment at two to four points above the rate you are considering. If that feels tight, borrow less or pay down existing debt first.

3. 3
   Confirm which income a bank will count

   Ask how bonuses, allowances and commission are treated. Those figures may be discounted or excluded.

4. 4
   Keep your records in order

   Salary certificates, bank statements and loan statements speed up verification, which the regulation requires lenders to carry out properly.

Common mistakes

• Assuming the maximum DBR is the amount you will be offered. Lenders may set a lower limit.
• Forgetting that a loan finishing soon still counts until it is settled.
• Using a bonus as the basis of affordability when the bank treats it as non-guaranteed.
• Taking on new credit between approval and completion, which can change the calculation.

For a broader view of the upfront cash you need, read the real cost of buying property in Dubai. For the amount you can borrow against the property value, see UAE loan-to-value limits.

Sources

• Central Bank of the UAE Rulebook, Regulations Regarding Mortgage Loans, Article 3 (Important Ratios) and Article 2 (Risk Management). Consolidated version 2, 8 April 2020.
• Checked against the sources below on 27 October 2026. Figures in the example are illustrative and calculated by Mortgage Hub.