If you’re preparing to buy a home, you’ve probably heard the term “Agreement in Principle” thrown around. Estate agents ask for it, brokers mention it, and it seems like you can’t make an offer without one. But what actually is it, and why does it matter?
Let’s cut through the jargon and explain exactly what an Agreement in Principle is, what it isn’t, and how to get one without making costly mistakes.
What is an Agreement in Principle?
An Agreement in Principle (AIP) is a statement from a lender indicating how much they’d be willing to lend you, based on an initial assessment of your financial circumstances. It’s also known as a Decision in Principle (DIP) or Mortgage in Principle (MIP), depending on which lender you’re dealing with. They all mean the same thing.
Think of it as a conditional thumbs-up. The lender is saying “based on what you’ve told us so far, we’re happy to lend you this amount, subject to a full application and property checks.”
It’s not a guarantee and it’s not legally binding, but it does show estate agents and sellers that you’re a serious buyer with the financial backing to proceed.
Why do you need an Agreement in Principle?
In today’s property market, especially for first-time buyers in areas like Solihull, having an AIP is essential before you start viewing properties or making offers.
Here’s why:
It shows you’re a serious buyer. Estate agents are flooded with enquiries from people who have no idea whether they can actually afford the properties they’re viewing. An AIP proves you’ve done your homework and that a lender is prepared to back you. This can be the difference between your offer being accepted or rejected, particularly when you’re competing with other buyers.
It tells you your budget. Before you fall in love with a house that’s out of reach, an AIP gives you a realistic figure to work with. You’ll know exactly how much you can borrow, which helps you focus your search and avoid wasting time. You can get a head start on understanding your budget using our mortgage borrowing calculator.
It speeds up the buying process. Once your offer is accepted, you’ll need to submit a full mortgage application. Having an AIP already in place means the lender has done the initial checks, so the process moves faster. In a chain situation or when you’re competing with other buyers, speed matters.
What an Agreement in Principle is NOT
There are some dangerous misconceptions about AIPs that can trip people up, so let’s be clear about what an AIP doesn’t do.
It’s not a mortgage offer. An AIP is an indication, not a guarantee. The lender still needs to carry out a full affordability assessment, verify your documents, and value the property before they’ll issue a formal mortgage offer. Things can and do change between AIP and full application.
It doesn’t guarantee acceptance. Just because one lender has given you an AIP doesn’t mean every lender will, or that your chosen lender definitely will when it comes to the full application. Lenders carry out more detailed checks later in the process, and if something doesn’t add up, they can decline you even with an AIP in hand. Our role is to get as good an understanding prior to this by knowing everything we need to about you and your circumstances, this helps avoid any issues further down the line.
It’s not indefinite. Most AIPs are valid for between 30 and 90 days, depending on the lender. If you don’t find a property or proceed with an application within that window, you’ll need to apply for a new one. And if your circumstances change during that time, your AIP could be affected.
It doesn’t lock in a rate. The interest rate mentioned in your AIP is usually indicative. Rates change daily, and the rate you’re offered at AIP stage may not be the same as the rate available when you submit your full application. This is why timing matters, and why working with a broker who monitors the market is valuable.
Does getting an AIP affect your credit score?
This is one of the most common concerns, and the answer is: it depends on how it’s done.
Most lenders (we’d say 95%) now carry out a soft credit search when issuing an AIP. A soft search doesn’t leave a mark on your credit file that other lenders can see, so it won’t affect your credit score or your ability to get credit elsewhere.
However, some lenders still use a hard credit search for AIPs. A hard search is visible to other lenders and can temporarily lower your credit score, especially if you’re making multiple applications in a short space of time.
This is why it’s crucial to work with a broker who knows which lenders use soft searches and which use hard ones. At Ernest Grant Mortgages, we’ll make sure your AIP is obtained in the least intrusive way possible, protecting your credit file whilst still giving you the proof you need for estate agents.
Want to understand more about how your credit file works and what lenders look for? We’ve covered this in detail in our guide on understanding credit files.
How do you get an Agreement in Principle?
There are two main routes: going direct to a lender or working with a mortgage broker.
Going direct means approaching a bank or building society yourself, either online, over the phone, or in branch. You’ll provide basic information about your income, employment, debts and the amount you want to borrow. Within minutes, they’ll tell you whether they can offer you an AIP and for how much.
The problem? You’re only getting one lender’s view. They might decline you based on their specific criteria, even though another lender would happily approve you. You also run the risk of a hard credit search without realising it, and you’re navigating the process without guidance on whether the AIP you’re getting is actually the right fit for your situation.
Working with a broker means we handle the AIP process for you. We’ll assess your full financial picture, recommend the lenders most likely to approve you, and obtain an AIP that’s tailored to your circumstances. We’ll also make sure it’s done with a soft search wherever possible, and that the amount you’re pre-approved for is realistic and sustainable. It’s also worth noting that some lenders actually give brokers more flexible criteria than if you were to approach them directly. It could be longer mortgage terms, options to consolidate debt or another area that a lender will only allow, if a broker is used to provide the advice.
For home movers juggling a chain or those remortgaging with a time-sensitive deadline, having a broker and our support team manage this removes a huge amount of stress and uncertainty.
What information do you need to provide?
To get an AIP, you’ll typically need to share:
- Your full name, date of birth, and address history (usually for the last three years)
- Your employment status, job title, and income
- Details of any existing credit commitments (loans, credit cards, car finance) and any issues you may have had in the past with credit
- The deposit you have available
- The property value or purchase price you’re aiming for
Some lenders might ask for proof of income or ID at AIP stage, whilst others will request this later during the full application. The more accurate and complete your information, the more reliable your AIP will be.
Common mistakes to avoid when getting an AIP
Applying with multiple lenders at once. It’s tempting to shop around for the best AIP, but if you’re doing this yourself and each lender does a hard search, you could end up damaging your credit score. Let a broker handle this for you so you only apply once with the right lender.
Overstating your income or understating your debts. It might be tempting to inflate your figures to get a higher AIP, but this will come back to bite you during the full application when the lender verifies everything. Be honest from the start.
Not knowing how to represent your income. You may have overtime, commission or bonus payments, or you could work varying hours month to month, each lender will calculate an annual figure for affordability differently, so it’s best not to guess.
Waiting until you’ve found a property. Some buyers wait until they’ve had an offer accepted before getting an AIP, which can delay the process and make you look unprepared. Get your AIP sorted before you start seriously viewing so you’re ready to move quickly when you find the right place.
Not checking whether it’s a soft or hard search. Always ask before you apply, especially if you’re going direct. A hard search when you’re not ready to commit could cost you points on your credit file for no good reason.
How long does an AIP last, and what happens next?
As mentioned earlier, most AIPs are valid for 30 to 90 days. During that time, you can use it to demonstrate your buying power to estate agents and sellers.
Once you’ve found a property and had your offer accepted, the next step is to submit a full mortgage application. This is where the lender will:
- Request full documentation (payslips, bank statements, proof of deposit)
- Carry out a detailed affordability assessment
- Instruct a property valuation
- Issue a formal mortgage offer if everything checks out
This process can take anywhere from a few days to a few weeks, depending on the lender and the complexity of your situation. If you’re getting ready to apply for a mortgage, understanding what to expect at each stage will help you stay on top of the process.
Should you get an AIP before speaking to a broker?
This is a question we get asked a lot, and the honest answer is no.
In fact, it’s often better to speak to a broker first. We can assess your circumstances, advise on the best lenders for your situation, and obtain an AIP on your behalf that’s strategically chosen to give you the best chance of approval at the full application stage.
Some AIPs are stronger than others. Certain lenders are known for being more thorough at AIP stage, which means their initial approval carries more weight with sellers and estate agents. We know which those are, and we’ll make sure you’re putting your best foot forward.
What if you’re declined for an AIP?
Being declined for an AIP can feel disheartening, but it’s not the end of the road.
Lenders have different criteria, and just because one says no doesn’t mean they all will. Common reasons for AIP declines include:
- Low credit score or missed payments on your credit file
- High levels of existing debt
- Self-employment income that’s difficult to evidence
- Employment gaps or frequent job changes
- Insufficient deposit
If you’re declined, the worst thing you can do is immediately apply elsewhere without understanding why. This is where a broker becomes invaluable. We’ll review your situation, identify the issue, and either recommend a different lender who’s more flexible in that area, or advise on steps you can take to improve your chances before reapplying.
Ready to get your Agreement in Principle?
An Agreement in Principle is your ticket to being taken seriously as a buyer. It’s not the finish line, but it’s a crucial checkpoint that shows you’re financially prepared and ready to move forward.
At Ernest Grant Mortgages, we’ll guide you through the AIP process with total transparency, making sure you understand what you’re getting, how it affects your credit file, and what the next steps are.
Whether you’re a first-time buyer taking your first step, a home mover in a competitive chain, or someone remortgaging to a better deal, we’re here to make the process as smooth and stress-free as possible.
Use our mortgage repayment calculator to get a sense of what your monthly payments might look like, or book a free consultation with our team to get your AIP sorted and your home buying journey underway.