Guarantor loans explained: borrowing with someone else's backing
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Quick answer: A guarantor loan is where someone else — usually a family member — agrees to repay the loan if you default. They help people with thin or poor credit access borrowing, but put the guarantor's finances and credit file at risk.
Guarantor loans bridge the gap for borrowers who cannot get credit on their own. A guarantor — typically a parent, partner, or close friend with good credit — promises to cover repayments if the borrower fails. The borrower gets access to funds; the guarantor takes on significant risk.
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Read the full credit cards & loans guide →Primary source: www.gov.uk/consumer-protection-rights/loans
How guarantor loans work
The borrower applies with a nominated guarantor. The lender assesses both parties' credit and affordability. If approved, the borrower receives the funds and makes monthly repayments.
If the borrower misses payments, the lender contacts the guarantor who must pay. Persistent default affects both credit files and the guarantor may face legal action for the full balance.
Risks for the guarantor
Guarantors are often parents helping adult children. If the child defaults, the parent must pay — potentially from retirement savings or by remortgaging.
The financial association on the guarantor's credit file can affect their own ability to borrow. Guarantors should treat this as seriously as taking out the loan themselves.
Alternatives to consider
A credit union loan may accept borrowers with poor credit at lower rates than guarantor lenders.
For small amounts, a 0% purchase credit card (if the borrower can qualify with a thin file) or budgeting support may be safer options.
If debt is the underlying issue, free advice from StepChange can address the root cause rather than adding new borrowing.
Common questions
Who can be a guarantor?
Usually someone aged 18–75 with good credit, a UK address, and a separate bank account from the borrower. Most lenders require the guarantor to be a homeowner.
Can a guarantor be removed later?
Generally no. The guarantor remains liable for the full loan term. Some lenders allow release if the borrower's credit improves significantly, but this is rare.
Does a guarantor loan help the borrower's credit score?
Yes, if repayments are made on time. Consistent payment history on any credit account builds your credit profile over time.