Fiscora publishes detailed guides on mortgages, savings accounts, student loans, credit cards and treasury bills. Each explains how to pay less, earn more, or sequence obligations efficiently. That work is useful and it brackets a question that, for a substantial share of readers, comes first: whether the instrument should be used at all.
This article is the other half of the shelf. It is not religious instruction and it is not a ruling — the author is neither a scholar nor a jurist. It is a structural account of how asset-backed financing works, written to the same standard as everything else here: mechanism first, arithmetic where it exists, and an honest statement of where it fails.
What is actually prohibited, precisely
The licence governing this publication defines the prohibited core narrowly, requiring all four of the following cumulatively:
| # | Element | What it means |
|---|---|---|
| 1 | A loan, deferral, or exchange of money or a fungible good | Money for money, or a commodity for the same commodity, across time. |
| 2 | A stipulated increase over the principal or counter-value | An agreed amount above what was advanced. |
| 3 | Stipulated as a condition of the deferral or the lending itself | Not as consideration for a distinct good, a service rendered, a risk genuinely borne, or an asset held. |
| 4 | Accruing to the lender or creditor in that capacity | The increase flows to the party as lender, not as seller, lessor or partner. |
Element 3 is where every permitted alternative lives. The prohibition is not on profit, growth, or being paid more than you advanced. It is on an increase that is consideration for nothing but the passage of time. Introduce a real good, a real service, a genuinely borne risk, or a held asset, and the third element is absent — the structure falls outside the prohibition entirely.
The same instrument lists what is expressly not prohibited: fee-for-service pricing, cost recovery on split payments at zero markup, genuine profit-and-loss sharing, lease and sale structures with real asset risk, and late-payment charges paid to charity rather than to the creditor. That list is the syllabus for everything below.
The one question that sorts any instrumentAsk: if the asset is destroyed tomorrow, who loses money? If the answer is "only the customer, the financier is repaid regardless," the financier bears no asset risk and you are looking at a loan with different vocabulary. If the financier shares the loss, the structure is what it claims to be.
The four structures
1. Murābaḥa — cost-plus sale
The financier buys the asset and sells it to you at a disclosed markup, payable in instalments. You are not borrowing money; you are buying a thing on deferred terms at an agreed total price.
Three features distinguish it from a loan. The financier must actually own the asset, however briefly, and bear its risk during that window. The markup is disclosed and fixed at contract — it does not accrue with time and does not change if you pay late or early. And because the total is fixed at the outset, there is nothing to accrue: late payment cannot increase what you owe to the financier.
The practical consequence is a payment profile that looks similar to a fixed-rate loan and behaves differently under stress. You cannot reduce the total by paying early — the price is the price — which is genuinely worse than an amortising loan for someone who expects to prepay. It is better for someone who fears falling behind, because the debt cannot grow.
2. Ijāra — lease
The financier owns the asset and leases it to you for a rental payment. Rent is consideration for use of a thing, not for the passage of time, so element 3 is absent.
The critical consequence is ownership. Because the financier owns the asset, the financier carries ownership risk: major structural repair, total loss, insurance of the fabric. In a genuine ijāra these cannot all be contractually pushed onto the tenant — if they are, the financier holds title without risk, and the structure has become a loan wearing a lease. This is the most common place where the substance is quietly hollowed out.
Ijāra is the natural structure for vehicles, equipment and commercial premises, and it forms half of the most common home-purchase structure.
3. Mushārakah — partnership
Both parties contribute capital to a venture and share profit by agreed ratio and loss by capital contribution. This is the purest form: there is no fixed return, no guaranteed principal, and the financier can lose money.
It is also, for that reason, rare in consumer finance and common in business finance. A financier who genuinely shares downside will price for it, and will want governance rights over the venture. That is not a defect — it is what bearing risk looks like when someone actually does it.
4. Diminishing mushārakah — the home-purchase structure
The most widely available alternative to a mortgage, and a combination of the previous two. You and the financier jointly purchase the property in shares — say 20% and 80%. You occupy it and pay rent on the share you do not own. Periodically you buy additional shares. As your share rises, your rent falls, because you are renting less. Eventually you own it outright.
| Conventional mortgage | Diminishing partnership | |
|---|---|---|
| What you pay | Interest + principal | Rent on the financier's share + share purchases |
| Who owns it | You, with a charge against it | Both, in proportion, until you buy out |
| Payment over time | Fixed; interest portion falls | Falls as your share rises |
| If the property falls in value | Loss is entirely yours; the debt is unchanged | Loss is shared in proportion to shares held |
| Early repayment | May carry a penalty | Buy more shares; rent falls immediately |
| If you default | Repossession; you owe any shortfall | The financier's share is protected, but the equity you hold is genuinely yours |
The fourth row is the substantive difference and the one most often missed. In a conventional mortgage, negative equity is entirely the borrower's problem — the debt does not shrink when the house does. In a genuine diminishing partnership, the financier holds an equity share and therefore holds equity risk. That is not a labelling difference; it changes who absorbs a market fall.
What these cost
Whether asset-backed financing is more expensive is genuinely disputed, and the honest answer is: usually comparable, sometimes slightly more, occasionally less.
The upward pressures are real. The market is smaller, so there is less competition. Documentation is more complex. In some jurisdictions a sale-and-resale structure attracts transfer taxes twice unless specific relief exists. And a financier genuinely bearing asset risk must price for it.
The downward pressures are also real. Fixed total price removes compounding risk. There is generally no early-repayment penalty, because there is no interest stream to protect. And where a profit rate is fixed for the full term, you are not exposed to rate resets — which, over a long horizon, has repeatedly been worth more than a small initial saving.
Anyone who tells you these are always cheaper is selling something. Run the total cost over the full term, as you would with any instrument, and compare like for like. Our mortgage model computes total cost over a term, and the same arithmetic applies to a rent-plus-share-purchase profile.
The failure mode: a loan with the words changed
This is the practical risk, and it deserves to be stated as bluntly as the prohibition itself.
An institution can construct a product that uses every correct term — murābaḥa, profit rate, asset purchase — while arranging the contract so that the financier bears no asset risk whatsoever. The asset is bought and sold in the same instant by agency agreement. Every repair, insurance and loss obligation is pushed onto the customer. A "late payment charge" is calculated exactly as interest would be. The profit rate is benchmarked to a conventional interest index and moves with it.
Our position is that benchmarking alone does not make a contract impermissible — a price has to be set somehow, and using an external index as a reference is not the same as charging interest. What matters is whether risk is genuinely borne. But an institution that uses a conventional benchmark and disclaims all asset risk and charges an accruing penalty to itself has reproduced a loan and renamed it.
Four questions that test any specific product:
- If the asset is destroyed, who bears the loss?If the answer is "the customer, entirely," the financier holds no asset risk.
- Who is liable for major structural repair and fabric insurance?In a genuine lease, the owner. If every ownership burden sits with you, the ownership is nominal.
- What happens if you pay late?An amount that accrues with time and is retained by the financier is interest. A fixed charge paid to charity is the permitted structure.
- What happens if the property falls in value and you must sell?In a genuine partnership the financier's share falls too. If you owe the full original sum regardless, the partnership is a fiction.
A certificate is not an answerProducts are commonly certified by a scholarly board. That is meaningful and it is not a substitute for reading the contract. Boards are frequently paid by the institution whose products they approve — the same conflict this publication declares about itself. Ask the four questions above and read the answers in the document, not the brochure.
Deposits and savings
The same logic runs in reverse. A conventional savings account pays a stipulated increase on a deposit, which is a loan to the bank, so all four elements are present.
The alternatives are muḍārabah deposit accounts, where your capital is invested and you share in actual profit by agreed ratio, and profit-sharing investment accounts on the same principle. The critical difference from a savings account: the return is not guaranteed, and in a genuine structure your capital is not guaranteed either. A "profit rate" advertised as fixed and certain in advance has reproduced interest.
This is a real trade. Our savings guide ranks accounts partly on deposit protection, and a profit-sharing account occupies a different risk position. Anyone treating the two as equivalent has not understood either.
Where this leaves the rest of the shelf
Fiscora will continue publishing conventional guides, and we should say why rather than leaving it implicit.
Most readers already hold these instruments and cannot exit them this year. A person with an existing mortgage and a credit card balance benefits from understanding how to reduce what they pay, and withholding that would harm them for no corresponding benefit — which is the definition of the harm our own governing principles name. Explaining an instrument is also not among the prohibited acts: the licence names originating, servicing, pricing, brokering, securitising and automating, and expressly excludes general-purpose analysis.
What we were doing wrong was not publishing the conventional guides. It was publishing only those, so that the alternatives were invisible and a reader could reasonably conclude none existed. The remedy is parity: where we explain an interest-bearing instrument, the asset-backed alternative is linked at equal prominence, near the top, not buried. That is now a standing editorial rule, and it is implemented as a component in the page shell rather than left to memory.
Honest limits
This is not a ruling and the author is not qualified to give one. Schools of jurisprudence differ, scholars differ within them, and several questions here are genuinely contested among people far better qualified than us. This article describes structures and risk allocation. Questions of religious obligation belong to a scholar you trust, not to a finance publication.
Availability varies enormously by jurisdiction, and in many places these products simply do not exist for consumers, or exist on terms so poor that the comparison is not live. We describe what the structures are; whether you can access them where you live is a separate question with a local answer.
Tax treatment is frequently unfavourable and rarely discussed. Where a tax system grants relief on mortgage interest and not on rent within a partnership structure, the after-tax comparison can move substantially. This is a material omission from most writing on the subject, including, until now, ours.
And we have been slow. This estate published four desks' worth of interest-bearing guidance before publishing this. That ordering was a real defect, we do not have a good excuse for it, and the parity rule exists so it cannot recur.
Revision log. Sep 2026: first publication. Written as the parity counterpart to Fiscora's credit, banking, property and investing guides, and linked from each at equal prominence. Reviewed annually.