Applications · 7 min read
Declined after an agreement in principle: understanding the difference
In short
An agreement in principle and a full mortgage application are different stages, and being through the first does not mean you are through the second. We should be straightforward about the limits of what we can tell you here: during our source check on 30 August 2026 we could not find an official FCA or government page that defines an agreement in principle, and terminology differs between firms. What we can say is that the affordability assessment and income-evidence duty under MCOB 11.6 attach to the lending decision, and that a preliminary indication given before that work is completed is not the completed decision. For what your own document actually means, read its wording and ask the firm that issued it.
Who this is for
- Anyone declined after holding an agreement or decision in principle
- People trying to understand what an AIP does and does not represent
- Buyers who relied on an AIP when making an offer
Key points
We could not find an official definition — and we will not invent one
No FCA, GOV.UK or MoneyHelper page defining an agreement in principle was confirmed during our source check. Firms use different names, including decision in principle and mortgage promise, and different processes behind them. The authoritative description of yours is the document you were given.
The lending duty attaches to the lending decision
MCOB 11.6 requires a lender to assess affordability and to obtain evidence of the income it takes into account. That work belongs to the decision to lend. A preliminary indication issued before it is complete is, by definition, not that decision.
More information exists at the later stage
By the time a full application is assessed, documents have usually been supplied and the property is known. A different, fuller picture can reasonably produce a different answer, without anything having gone wrong.
The property may be the factor
An indication given before a specific property was identified says nothing about that property as security. This is a common source of confusion, because the decline feels personal when it may not be.
Nobody outside the lender knows the reason
Only the lender that assessed the application knows how it reached its decision, and it is not obliged to explain its criteria. We cannot tell you the reason and neither can anyone else who was not involved.
Rapid reapplication is a question for an adviser
Applying repeatedly without advice is not something we would encourage, but the right course in your situation is a matter for a suitably qualified FCA-authorised mortgage adviser.
Exceptions and things that vary
- Some firms carry out more checking before issuing an indication than others. There is no standard.
- Whether the indication involved a credit search at all, and of what type, depends on the firm.
- Nothing here tells you what happened in your case, because we do not know and cannot find out.
How to work through it
Re-read the actual document
Our suggestion: find the indication you were given and read its wording, including any statement about what it is not. That wording, not this page, governs your situation.
Write down the sequence
Our suggestion: note the dates, which firm was involved at each stage, what you supplied and what you were told, in your own words and while it is fresh.
Check what changed between the stages
Our suggestion: compare what you stated at the indication stage with what your documents later showed. If there is a difference, that is a factual thing you can understand and describe.
Read your credit files
Our suggestion: obtain them from more than one agency. If something is factually inaccurate, the ICO explains you have the right to have inaccurate personal data corrected.
Take the written summary to an adviser
Our suggestion: bring your dates, documents and questions to a suitably qualified FCA-authorised mortgage adviser rather than starting again from memory.
Illustrative example (not a real case)
Imagine someone who obtained an indication using an estimated income figure, then supplied payslips showing basic pay plus a variable element assessed differently. Two stages, two pictures, one surprise. The point of the example is the value of reconciling stated figures with documents at the earliest stage, not any claim about what a lender would do. Illustrative only.
Illustrative only. Figures and situations in examples are made up to show a method. They are not typical, not a benchmark and not a prediction of any outcome.
What not to assume
- Do not assume an agreement in principle is an offer, a guarantee or a commitment to lend.
- Do not assume all firms mean the same thing by the term.
- Do not assume the decline concerned you rather than the property.
- Do not assume anyone outside the lender can tell you the reason.
- Do not assume there is a waiting period before you can prepare again. No source we consulted sets one.
Questions for a qualified adviser
We cannot answer these for you, and we do not introduce or recommend advisers. Take them to a suitably qualified FCA-authorised mortgage adviser of your own choosing.
- What does the indication I was given actually commit anyone to, on its own wording?
- What information would be assessed at full application that was not assessed earlier?
- Given what I can evidence, what would you want me to prepare before anything further is submitted?
- What are the implications of making another application at this point?
Build my document checklist
A printable starting list of the paperwork commonly requested.
Related reading
A resource that may help you organise the next step
Optional educational preparation resources. Nothing here is mortgage advice, a lender or product recommendation, an eligibility assessment or a prediction of whether an application would be accepted.
- Mortgage Preparation Starter Checklist — free
A one-page starting point for the paperwork most people are asked for.
- Readiness checker
Eight broad preparation questions. It never says whether you would be eligible, approved or declined.
- All-Access Preparation Bundle — £19.99
A preparation resource, not mortgage advice or a lender recommendation. Purchases are not switched on yet.
Sources
No statistic, regulator citation or third-party claim is published until its source is verified. Unverified entries are shown as placeholders.
- PlaceholderAgreement in principle — no official definition located
- VerifiedFCA Handbook, MCOB 11.6 Responsible lending and financing
- VerifiedICO, Credit — information for the public
Written by
Before You Apply editorial
Written by the publisher's editorial function, not by a named individual and not by a mortgage adviser. Before You Apply is not FCA authorised.
Reviewed by
Independent reviewer — to be appointed
No independent reviewer has been appointed yet. No review, qualification, FCA status or endorsement is claimed for this content.
- Last fact-checked 2026-08-30
- Not yet independently reviewed
- Next review due 2027-02-28
Disclosure: this guide is educational. Before You Apply receives no payment for mentioning any lender, product or firm, and none are named.
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