Getting Ready to Buy

Mortgage Agreement in Principle (AIP)

A Mortgage Agreement in Principle is an important first step in your home buying journey. It gives you an indication of how much you could borrow and shows sellers you're a serious buyer.

What is a Mortgage Agreement in Principle?

A Mortgage Agreement in Principle (AIP), also known as a Decision in Principle (DIP) or Mortgage Promise, is a certificate or statement from a lender that shows how much they might be willing to lend you based on some basic information about your income, expenses, and credit history.

It's important to note that an AIP is not a guaranteed mortgage offer, but rather an indication of what you might be able to borrow if you meet the lender's full criteria during a complete mortgage application.

Why Do You Need One?

  • Shows estate agents and sellers you're a serious buyer
  • Gives you a realistic idea of your budget before house hunting
  • Can speed up the mortgage application process later
  • Helps identify any potential issues early in the process
  • Makes your offer more credible to sellers

When Should You Get an AIP?

The best time to get an AIP is before you start viewing properties. Most AIPs are valid for between 60 and 90 days, giving you plenty of time to find a property. If it expires, you can usually get another one.

⚡ Pro Tip: While it's important to have an AIP before making offers, don't get one too early if you're not ready to start viewing properties, as each application might leave a footprint on your credit file.

How to Get an AIP

You can get an AIP directly from banks or through a mortgage broker. Here's what you'll need:

Personal Information

  • Personal details (name, DOB, address)
  • Three years of address history
  • Current employment details
  • Bank account details

Financial Information

  • Annual income and salary details
  • Any additional income sources
  • Monthly outgoings
  • Existing credit commitments

Important Considerations

  • An AIP typically leaves a "soft" or "hard" credit search on your file - check with the lender which they use
  • Multiple credit searches in a short period can affect your credit score
  • The actual mortgage amount offered may differ from the AIP
  • Some estate agents may have preferred mortgage brokers or lenders - but you're not obliged to use them
  • Different lenders may offer significantly different amounts - it's worth shopping around

Next Steps After Getting an AIP

  1. Start viewing properties within your confirmed budget
  2. Keep your financial situation stable - avoid taking on new debts
  3. Save all documents used for the AIP - you'll need them for the full application
  4. Begin researching conveyancers and property surveyors
  5. Consider setting up property alerts on major property websites
NHomeBuyers Corner
HomeBuyers Corner is here to fight the corner for the buyer in UK property transactions with helpful, independent and impartial advice, guides and tips.
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