Mortgage Decision In Principle Explained

Main guide

What does a Decision in Principle mean?

A mortgage Decision in Principle is an early assessment from a lender. It is based on the details available at the time, such as your income, regular commitments, deposit, credit history and the type of mortgage you may need.

It is not a final approval. Instead, it gives an indication of whether a lender may consider lending to you and, in many cases, how much they may be willing to lend subject to further checks.

You may also hear it called an Agreement in Principle, Mortgage in Principle, Decision in Principle or DIP. These terms are often used in similar ways, although each lender may have its own process and wording.

Why buyers often arrange one early

Many buyers arrange a Decision in Principle before viewing properties seriously or making an offer. This can help you understand your likely price range and avoid spending time looking at homes that may be outside your borrowing position.

Estate agents may also ask whether you have a Decision in Principle before putting your offer forward. It can help show that you have already looked into mortgage affordability and are not starting from scratch.

However, it should be treated as a guide rather than a guarantee. Your full mortgage application will still need to be assessed once you have found a property.

What information is usually needed?

To produce a Decision in Principle, a lender or adviser will usually need information about your income, outgoings, deposit and credit background. The exact details can vary depending on the lender and your circumstances.

For example, an employed applicant may need to provide salary, employment type and regular commitments. A self-employed applicant may need to provide details of accounts, tax calculations or business income. Someone with credit issues may need to be more careful about which lender is approached.

Lenders may look at:

• your income and employment status
• your regular financial commitments
• your deposit size and source
• your address history
• your credit profile
• whether you are applying alone or jointly
• the type of property or purchase you are considering

Some Decisions in Principle are based on a soft credit check, which is usually not visible to other lenders. Others may involve a hard credit search, which can leave a visible footprint on your credit file. This is one reason it can be useful to speak with an adviser before applying, especially if your circumstances are not straightforward.

The Mortgage Hive can help you understand which lenders may be more appropriate to approach before unnecessary applications are made.

Does a Decision in Principle affect your credit score?

It depends on the lender and the type of check used. Some lenders use a soft search, which is normally only visible to you and does not usually affect your credit score. Others may use a hard search, which can be seen by other lenders and may affect your credit profile if you make multiple applications in a short period.

Before requesting a Decision in Principle, it is worth checking what type of search the lender will carry out. This is particularly important if you have a low credit score, previous missed payments, defaults, CCJs or other credit issues.

How long does a Decision in Principle last?

A Decision in Principle usually lasts for a limited period. The exact timescale depends on the lender. If it expires before you find a property, it may need to be refreshed or reissued.

Your circumstances can also change during that time. A change in income, employment, credit commitments, deposit, property price or lender criteria could affect the outcome of a later full application.

Why it does not guarantee a mortgage

A Decision in Principle is based on initial information. A full mortgage application is more detailed. The lender will usually check documents, verify income, assess the property, review the source of deposit and complete further underwriting.

The property itself also matters. A lender may decline or reduce lending if there are concerns about the property type, valuation, construction, lease length or condition.

Common mistakes to avoid

One common mistake is treating a Decision in Principle as guaranteed approval. Another is entering rough or inaccurate information just to get a quick answer. If the details do not match your documents later, this could cause delays or problems.

It is also risky to apply to several lenders without understanding their credit check process. Multiple hard searches in a short period can be unhelpful.

A better approach is to check your position properly, understand the documents you may need, and choose the lender route carefully.