Why conventional mortgages are problematic in Islam
Riba — the Arabic term for any unjustified increase in an exchange or loan — is explicitly prohibited in the Quran in multiple verses, including 2:275–279. A conventional mortgage involves the lender providing money with a requirement to receive more money in return over time (interest). The debt grows if payments are missed, and the rate can change during the term. This structure is considered riba by the consensus of Islamic scholars across all major schools of jurisprudence (Hanafi, Maliki, Shafi'i, and Hanbali). For a Muslim who needs to purchase a home without compromising their faith, several Shariah-compliant alternatives have been developed by Islamic banks and financial institutions operating in the UK.
Murabahah: the cost-plus sale
Murabahah is the most commonly used Islamic finance structure. The bank purchases the property at the market price and then sells it to the customer at a higher agreed price that includes a disclosed profit margin. The customer pays this total in instalments over the agreed term. The key differences from a conventional mortgage: the profit is fixed and disclosed upfront, the total never increases, and the bank must genuinely own the property before the sale (taking on real commercial risk). Because it is a sale contract rather than a loan contract, scholars consider it Shariah-permissible. The calculator on this site models the Murabahah structure so you can plan your monthly instalments and total cost.
Ijara: the lease-to-own structure
Ijara (Islamic leasing) is the second major home finance structure. The bank purchases the property and leases it to the customer. The customer pays rent monthly for the use of the property. Simultaneously, a separate purchase agreement is signed whereby the bank agrees to sell — and the customer agrees to buy — the property at a future date, or through gradual purchase. Unlike Murabahah (a sale from day one), Ijara involves the bank retaining ownership and bearing the responsibilities of an owner (major repairs, for instance) while the customer pays rent. The rent can be fixed or variable — variable rent Ijara products in the UK typically track the Bank of England base rate, which some scholars find problematic.
Diminishing Musharakah: shared ownership
Diminishing Musharakah (decreasing partnership) is increasingly popular in the UK. The bank and customer jointly purchase the property — say, the bank owns 80% and the customer owns 20%. The customer pays rent for the portion they do not own, plus a monthly payment to gradually purchase more shares from the bank. Over time, the bank's ownership diminishes and the customer's grows, until full ownership transfers. This structure is considered the most genuinely Shariah-compliant by many scholars because both parties share the risk of property ownership throughout, unlike Murabahah which concentrates all risk in the sale structure.
Choosing a Shariah-compliant provider in the UK
Several Islamic finance providers operate in the UK: Al Rayan Bank (the largest Islamic retail bank), Gatehouse Bank, and a small number of specialist brokers who arrange Islamic mortgages through conventional lenders with Shariah-compliant structures. When choosing a provider, look for: certification from an independent Shariah Supervisory Board (not just an internal committee), clear disclosure of the profit structure and total cost, FCA (Financial Conduct Authority) regulation, and transparency about how variable rent is calculated if applicable. Al Rayan Bank and Gatehouse Bank are both FCA regulated and use independent Shariah boards, making them the benchmark providers in the UK market.
Planning your halal home finance
Use our Murabahah calculator to model your monthly instalments and total cost for different property prices, deposits, profit rates, and terms. A larger deposit reduces the financed amount, the bank's profit, and your monthly instalment. A shorter term increases monthly payments but significantly reduces the total profit paid. As a planning benchmark, most Islamic finance providers in the UK currently offer profit rates within 0.5–1% of conventional mortgage rates for comparable products — making halal finance highly competitive. The slightly higher rate is often justified by the legal costs of the more complex ownership structure, but the difference is narrowing as the Islamic finance market matures.