A mortgage indemnity guarantee is a form of insurance designed to protect the lender who has granted the mortgage to the homeowner to buy their property. Not all property purchases with a mortgage attached require this guarantee. It depends on the loan to value ratio for an individual situation. The higher the LTV is, the more likely it is your lender will require you to take out suitable indemnity insurance before they will agree to provide your home loan. Typically, the LTV value is of around 75% or more in this case. The insurance is also sometimes referred to as a Higher Lending Charge or as an MIG policy (mortgage indemnity guarantee).
The most important element to remember with this type of insurance is that it works in the opposite manner to most other insurance policies. If you insure yourself against loss of some kind, that policy is going to pay out for you if you find yourself in the conditions covered by the policy. For example, if you pay for contents insurance, that insurance policy pays out if your home is broken into and items are stolen.
A MIG policy does not work the same way. In this case, you take out the policy and pay for it as you would with any other policy. However, since it is designed to protect the bank or building society lending you the funds to buy your home, they are the ones who would benefit from a payout if something went wrong and you could not meet your mortgage payments. The amount you would pay for the policy depends on the provider, but it usually represents a percentage of the loan amount that goes above 75% of the loan to value ratio.
About the author:
The Mortgage Broker
The Mortgage Broker is an award-winning UK mortgage and protection specialist with decades of experience helping thousands of customers secure suitable and affordable mortgage solutions. Regulated by the Financial Conduct Authority, all advisers are minimum CeMAP-qualified and known for delivering clear, transparent, and expert guidance whether helping first-time buyers, home movers, remortgage clients or those with complex or adverse-credit needs. Recognised as a finalist at the Mortgage Strategy Awards 2025, The Mortgage Broker combines digital speed with human trust, offering access to over 130 lenders and more than 25,000 products. The company’s app, secure client portal and easy-to-use tools make it simple for customers to compare rates, track progress, and stay informed from start to finish.
With more than 2,500 verified five-star Trustpilot reviews, clients consistently praise the firm’s professionalism, value for money, and personal service. Reviews highlight the team’s ability to explain complex mortgage and protection topics in plain English, providing support throughout the entire journey. The company’s reputation for knowledge, empathy, and reliability has made it one of the UK’s most trusted brokers, delivering advice that is honest, transparent, and tailored to each individual’s financial goals.
Every part of The Mortgage Broker’s service reflects Google’s E-E-A-T principles: Experience, Expertise, Authoritativeness, and Trustworthiness. Its team has decades of hands-on industry knowledge, proven technical expertise, and national recognition supported by awards, media features, and verified customer feedback. As an FCA-regulated firm with a 5-star reputation, The Mortgage Broker stands for no-nonsense advice, common-sense lending, and exceptional customer outcomes — setting the standard for trusted mortgage advice across the UK.