What is a mortgage-readiness credential?

Every mortgage application starts the same way: you gather the same payslips, bank statements, and ID documents you provided the last time, package them into PDFs, and email them to a broker. The broker sends them to a lender. The lender re-verifies everything from scratch. Weeks pass. You do it again if the first lender says no.

The problem is not that lenders want to know who you are and whether you can afford the repayments. Of course they do. The problem is that the evidence you have already assembled lives nowhere useful. It sits in email attachments and PDF exports, tied to one application, invisible to the next. You carry no proof of the work you have already done.

The idea: a portable record you actually own

Imagine a boarding pass, except instead of a flight, it describes your financial position at the time you checked. You show it to whoever needs it, and they can see that the underlying facts have already been checked and have not been tampered with. You do not need to reassemble the evidence every time.

That is the core idea behind a mortgage-readiness credential: a single, portable, tamper-evident digital record of the checks already done, held by you, not locked inside one provider or buried in one broker's system.

The technical standard underpinning this is W3C Verifiable Credentials, an open web standard designed precisely for this purpose: a structured digital document that is tamper-evident, machine-readable, and owned by the person it describes.

What it can carry

A mortgage-readiness credential is not a single data point. Think of it as a container that can hold several connected pieces of evidence:

Identity. Verified identity: who you are — document checks plus anti-money-laundering and sanctions screening, recorded as clear-or-not results, never the raw documents themselves.

Government-sourced income (HMRC). With your authorisation, income figures drawn from HMRC records, reflecting what you have declared and what has been recorded with the tax authority. We say Government-sourced because that is what it is: data originating from HMRC, the tax authority, not a statement from us.

Affordability from your real transactions. Open Banking lets you connect your bank accounts and share your actual transaction history. Rather than asking you to estimate your monthly outgoings, an affordability picture can be built from what your bank already knows: salary credits, committed spending, regular bills, discretionary patterns. The illustrative read Moxim produces today is exactly this: a structured view of your transactions, categorised and summarised.

Property detail. If you have a property in mind, relevant details about that property can sit alongside the financial picture.

Open Banking account summary. Alongside the affordability picture, the credential carries a factual summary of the bank connection itself — the accounts linked and the institution — so a broker can see the source, not just the output.

Credit. Credit information, added with your explicit authorisation.

None of these pieces float separately. They sit together in one record, consistent and coherent.

You decide who sees what

Here is where a credential differs from a bundle of documents: you do not have to show everything to everyone.

Suppose you want to share your affordability picture with a broker so they can advise you on your options. You can share a view of the credential that contains the affordability summary without opening up the granular detail of every transaction. The broker sees what they need. The behavioural depth stays closed.

If you later want to go further, perhaps because a lender needs the full transaction-level picture, you grant that separately, explicitly. The deeper view opens only with your consent at that moment.

This is sometimes called selective disclosure. In plain terms, it means one credential, different views, and you remain in control of which view you grant and when. The mechanics behind it are open standards (the SD-JWT format, built in our platform on the open-source walt.id stack), and we explain exactly how it works in How selective disclosure works.

Why ownership matters

The phrase "you own it" is easy to say and hard to feel. Here is what it means in practice, as the credential is designed to work.

Today, when you go through a mortgage process with a broker or lender, the evidence you provide becomes part of their records. If you want to approach a different broker, or if your circumstances change and you need to start again, you start from scratch.

A portable credential changes that. Because the record belongs to you, you can take it to any broker. You are not locked into the relationship you happened to start with. You can withdraw access. You can let it expire. You are the point of control, not the institution.

This matters particularly in a market where consumers often feel the process is done to them rather than with them. A credential you own is one small but meaningful shift in that balance.

Where Moxim fits

At Moxim, we believe you should be able to see where you stand on a mortgage clearly, honestly, and from your own data. We are building an Open Banking-powered mortgage-readiness layer: an illustrative read of your affordability, and a portable credential you own and can take to any broker.

We showed our work at the FCA Mortgages TechSprint 2025, and the work continues.

Everything Moxim shows today is illustrative and educational, never a quote, an offer, or a lending decision. Moxim is not yet PRA-authorised or FCA-regulated. If you would like to see where you stand, see the experience.