A guarantor is someone who guarantees to meet your mortgage or rent payments if you cannot or will not do so for any reason. In many cases, the guarantor is a parent or other relative such as a grandparent. The guarantor is essentially providing back up for someone else’s loan or other financial agreements. They provide a form of insurance against the loan, if the person paying the loan doesn’t do so.
Such an agreement can be set up with a landlord if the person wants to rent a property. It can also more commonly be set up with a lender such as a bank or building society if the person wants to take out a mortgage to buy a property.
Be aware of the risks if you are asked to be a guarantor
It is easy to think you will never be called upon to repay the loan if things go wrong. In reality, no one can tell what may happen in the future. Even if your relative is trustworthy and will do all they can to pay off their mortgage, they could fall into financial hardship. If this occurs, your role as guarantor means the lender can call on you to repay the loan. This could leave you in dire financial straits, hence why it is very important to consider the potential consequences and worst-case scenario before you agree to take on the role.
With young people struggling to save the required amount to put down as a deposit on a mortgage (or to get a mortgage at all), it is no surprise that guarantor mortgages are becoming more common. However, proper advice should be sought prior to agreeing to be a guarantor for anyone – even your own child.
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.