title: Murabaha vs Conventional Loan Calculator description: Compare the total cost of Islamic Murabaha (cost-plus) home financing against a conventional amortizing loan.
How It Works
This calculator compares two distinct methods of financing:
- Conventional Loan: Based on an amortizing structure where you pay interest only on the declining principal balance over time.
- Murabaha Financing: A Sharia-compliant "cost-plus" structure where the financier buys the asset and sells it to you at a markup. The profit rate is applied to the full financing amount for the entire term upfront.
Because Murabaha applies the markup to the full balance for the entire duration, an identical "rate" will yield a much higher total cost compared to conventional amortization.
The Math Behind the Comparison
Conventional Monthly Payment Formula:
PMT = P * (r * (1 + r)^n) / ((1 + r)^n - 1)
Where:
P= Principal amountr= Monthly interest rate (Annual Rate / 12)n= Total number of months
Murabaha Cost Formula:
Total Profit = Principal * Profit Rate * Term (Years)
Total Cost = Principal + Total Profit
Monthly Payment = Total Cost / (Term * 12)
Example Comparison
If you need $300,000 for 30 years at 6.5%:
Conventional Amortized:
- Monthly Payment: $1,896.20
- Total Interest: $382,633.42
- Total Cost: $682,633.42
Murabaha Cost-Plus:
- Total Profit (300,000 * 6.5% * 30): $585,000
- Total Cost (300,000 + 585,000): $885,000
- Monthly Payment (885,000 / 360): $2,458.33
Difference: The Murabaha structure costs $202,366.58 more over the life of the financing, despite using the exact same percentage rate.
Result Interpretation
Compare monthly payment, total profit or interest, and total cost together. The same nominal rate is not an equivalent economic outcome because conventional financing amortizes while the simplified Murabaha model applies a fixed markup to the original principal.
Important Note on Early Payoff
In a conventional loan, if you pay off the balance early, you stop paying interest.
In a strict Murabaha contract, the profit is fixed at the time of sale. If you pay off the home in year 5 instead of year 30, you may still owe the full 30-year profit amount. Some Islamic financiers offer early payment discounts (known as Ibra'), but this is usually at their discretion and not contractually guaranteed in the primary agreement.
Frequently Asked Questions
Is this a contract or legal ruling?
No. It is an educational comparison using the assumptions shown above. Actual contracts, rebates, fees, and scholarly interpretations vary by provider and jurisdiction.