Guarantor Loans UK Explained: How They Work, Risks, and Alternatives

Quick answer: A guarantor loan is a personal loan (typically £1,000–£15,000) where a friend or family member agrees to repay if you can’t. Interest rates are high (30–50% APR) — lower than payday loans but far more expensive than standard personal loans. The guarantor’s credit is at risk if payments are missed. Consider alternatives like credit-builder cards or credit union loans first. Source: MoneyHelper — Guarantor loans.

Guarantor Loans UK Explained

If you have poor credit and can’t get a standard loan, a guarantor loan is one option — but it comes with significant risks for both borrower and guarantor. This guide explains how they work and what to consider before applying.

What Is a Guarantor Loan?

A guarantor loan is a type of personal loan where a second person (the guarantor) agrees to make repayments if the main borrower defaults. The guarantor is usually a family member or close friend with a good credit history.

Key characteristics:

Feature	Details
Loan amount	£1,000–£15,000
Repayment term	1–7 years
Typical APR	30–50%
Who it’s for	People with poor or no credit history
Guarantor requirement	Must be a UK homeowner or have good credit
FCA regulated	Yes — but high cost

How Guarantor Loans Work

You apply with a guarantor lender (e.g., Amigo Loans, Tappily, Bamboo)
Your guarantor is credit-checked — they must pass affordability assessment
The loan is paid to the guarantor, who then transfers it to you (this is a legal requirement to confirm the guarantor understands their commitment)
You make monthly repayments — if you miss one, the lender contacts your guarantor
If you default, the guarantor becomes liable for the full remaining balance

Source: FCA — Guarantor loans.

The Real Cost

Loan Amount	Term	APR	Total Repayable	Interest Paid
£3,000	3 years	49.9%	£6,420	£3,420
£5,000	4 years	45%	£9,168	£4,168
£10,000	5 years	40%	£18,360	£8,360

Compare this to a standard personal loan at 8% APR: a £5,000 loan over 4 years would cost £5,832 total — less than half.

Use our what is APR guide to understand how interest compounds on loans.

Risks for the Guarantor

Being a guarantor is a serious financial commitment:

Your credit score is affected — the loan appears on the guarantor’s credit file
You’re legally liable — if the borrower defaults, you must pay the full remaining balance
The relationship can suffer — money disputes are a leading cause of family conflict
Your home could be at risk — some lenders require the guarantor to be a homeowner, and enforcement could ultimately lead to charging orders on property
You can’t easily withdraw — once committed, you’re locked in for the full term

Before agreeing to be a guarantor, ask yourself: Can I afford to repay this entire loan if the borrower can’t? If not, don’t do it.

Source: MoneyHelper — Being a guarantor.

Risks for the Borrower

High interest costs — you’ll pay back 2-3x the amount borrowed
Strained relationships — missing payments puts your guarantor under financial pressure
Debt spiral risk — the high monthly payments can push you toward further borrowing
Limited lenders — few companies offer guarantor loans, reducing competition

If you’re struggling with repayments, read our how to get out of debt guide and contact StepChange for free help.

Alternatives to Guarantor Loans

Before considering a guarantor loan, explore these options:

Alternative	Typical Rate	Best For
Credit-builder card	30–35% APR	Building credit history
Credit union loan	12–26% APR (capped)	Small ethical loans
Budgeting loan (on benefits)	0%	Essential costs if on UC
0% purchase card	0% for 12-20 months	Specific purchases
Bank overdraft	35-40% EAR	Very short-term only
Personal loan (if credit allows)	6–15% APR	Larger amounts

Read our bad credit loans guide and payday loans vs personal loans guide for detailed comparisons.

Frequently Asked Questions

“What is a guarantor loan?” | “A guarantor loan is a personal loan where a friend or family member agrees to repay if you can’t. Typical amounts are £1,000-£15,000 at 30-50% APR. The loan is paid to the guarantor first, who transfers it to the borrower.” “Is being a guarantor risky?” | “Yes. You’re legally responsible for the full loan if the borrower defaults. The loan appears on your credit file, and missed payments damage your credit score. Only agree if you can afford to repay the entire loan yourself.” “What’s better than a guarantor loan?” | “Credit-builder cards (lower APR, builds your own credit), credit union loans (much lower rates, ethical lending), or a budgeting loan if you’re on benefits. All are cheaper than guarantor loans.” “Can I get out of a guarantor loan early?” | “You can repay early with reduced interest (under FCA rules). However, the guarantor cannot unilaterally withdraw — they’re committed for the full term unless the loan is repaid.”

Sources and Further Reading

Disclaimer: This guide provides general information only. Borrowing decisions should be based on your individual circumstances. Always seek free advice from MoneyHelper or Citizens Advice before taking on high-cost credit.