Credit checks on a guarantor: what lenders look at and how it shows on your file

A guarantor is someone who "guarantees" a loan for someone else, agreeing to pay it back if the other person cannot¹. Before accepting you in that role, the lender will look at your credit file. For most guarantor loans and guarantor mortgages that check is a soft search, which is not visible to other companies and does not affect your credit score¹.

What changes your file is what happens next. As long as the borrower pays back the debt on time, being a guarantor will not affect your credit rating. But if you end up making payments on their behalf, those payments are added to your credit history and could reduce your credit score¹. A default gets recorded on both credit files⁴.

The checks themselves are not the risk. The guarantee is. If the borrower fails to make payments, the guarantor is legally liable to pay back the loan for them¹, and depending on the terms of the agreement the guarantor may become liable to pay back everything owed, not just the payments that were missed⁵.

What a lender checks before accepting a guarantor

When a borrower applies for a guarantor loan, the lender must do an affordability check for both the main borrower and the guarantor⁸. The creditor agrees to lend the money based on the guarantor being able to repay the loan in full, so the guarantor's own finances are central to the decision, not a formality⁴.

The guarantor must prove they can afford the repayments, based on their income, savings and any assets⁴. Beyond that, the lender might ask for proof that the guarantor is working, proof of income, or for the guarantor to be a homeowner¹. Requirements vary by lender, and a guarantor mortgage is decided case by case: it is possible that the security a guarantor offers could offset the risk the borrower poses as a customer⁹.

Lenders also have to be able to show their workings. When agreeing to a loan, lenders need to make sure the borrower can afford the repayments without too much trouble, and must show what checks they did if the loan is later complained about as unaffordable¹⁰. That record matters to guarantors, because it is the evidence a complaint rests on if the lending should never have happened.

For a rented home the picture is slightly different. If a tenant fails an income, credit or reference check, they could offer to provide a guarantor¹¹. The landlord or agent usually checks the guarantor's income and credit history¹², and usually checks that the guarantor can afford to pay the rent¹³.

Soft or hard search: how a guarantor credit check shows on your file

Before you become a guarantor, the lender will carry out a credit check on you. This is normally a soft credit search, which is not visible to other companies and will not affect your credit score². The same applies to guarantor mortgages: guarantors do have their credit checked, and most lenders want to see a strong credit score, but the search is a soft credit check that will not affect the guarantor's credit score and is not visible to other companies looking at the file in future³.

A hard search behaves differently. Hard checks involve a full search of your credit report and leave a footprint on your credit file that is visible to other lenders for at least 12 months, and they can affect your credit report and score¹⁴. A lot of checks in a short amount of time can reduce your score¹⁵. Some lenders use a soft search in some cases and a hard search in others, and where a hard search is used it will be recorded on your credit file and may be visible to other lenders¹⁶.

A credit check is done on you if you agree to be a guarantor, and this is added to your credit file¹⁷. That entry is not the same as a hard footprint, but it does mean the guarantee is on record.

Who can pass: age, residency, credit history and homeowner requirements

In general, a guarantor must have a good credit history, be at least 21 years old, or 18 in some cases, and live in the UK¹. The UK residency condition exists so the lender can take legal action if it needs to¹. Independent guidance puts the age bar in the same place: the guarantor generally needs to be over 21 years old and have a good credit rating¹⁸, and guarantors need a good credit history and must be over 21, usually as homeowners⁶.

The borrower's position is the mirror image. A guarantor loan can be a good solution if the borrower has a bad credit score or no credit history, such as a student just starting out or someone new to the country¹. The borrower must be at least 18 years old¹⁸. A guarantor mortgage can help where the borrower has a low income, a small or no deposit, a bad credit score, or little or no credit history⁹.

Can I be a guarantor if I have bad credit?

Usually not, on the guarantor side. The role exists to strengthen an application, so the lender is looking for a good credit history in the person providing the guarantee¹. Where a borrower has bad credit, the guarantor is the compensating strength, not a second weak point.

There is more room for manoeuvre than a single rule suggests. Lenders decide guarantor mortgages on a case-by-case basis, and it is possible that the security a guarantor offers could offset the risk the borrower poses as a customer⁹. Some lenders ask for additional proof instead of, or as well as, a clean file: proof that the guarantor is working, proof of income, or that the guarantor is a homeowner¹.

If a guarantor is not available, the alternatives for a borrower with a poor credit history sit elsewhere. Some landlords and rental companies do credit checks and may not rent to someone with bad credit¹⁹, and a low score can mean being turned down or asked for a larger deposit or guarantor²⁰. For borrowing, getting a loan with a poor credit history and guarantor loans and being a guarantor set out the options and what each costs.

Can my partner or spouse be my guarantor?

Usually not. To be a guarantor, you generally must not be financially connected to the borrower, such as a spouse or partner¹⁸. The guarantor is usually a friend or family member⁴. The point of the rule is that a guarantor who already shares the borrower's finances adds little protection if the household's income falls.

That does not stop family help taking other forms. A guarantor mortgage involves a parent using their savings or their home to help their child get a mortgage²¹. Where a couple is separating, anyone considering being a guarantor is advised to get independent legal advice and talk to a mortgage adviser before agreeing²².

Being a guarantor can hit your credit score if the borrower misses payments

This is the part that matters most. As long as the borrower pays back the debt on time, being a guarantor will not affect your credit rating. But if you have to make payments on their behalf, those payments are added to your credit history and could reduce your credit score¹. Guarantor loans are less risky for the borrower than the guarantor, but can negatively affect both people's credit score if the loan is not paid back on time¹.

A default is recorded on both credit files⁴. If the borrower misses payments, the guarantor will need to pay instead²³, and if the guarantor refuses to pay, the lender may start enforcement action and the guarantor's credit rating will be affected²⁴. The lender chases the borrower first, then the guarantor, who is responsible for the debt²⁵.

The size of the exposure is worth stating plainly. Depending on the terms of the agreement, the guarantor may become liable to pay back everything owed, not just the payments that were missed⁵. Guarantor loans can also be more expensive than some other types of credit, since they often have higher interest rates¹. What a guarantor pays when the borrower misses payments and how a guarantor loan default affects your credit file go through the mechanics.

Can I change my mind after agreeing to be a guarantor?

Not once the money has gone out. You can only change your guarantor during the loan application process; once the loan has been paid out, you cannot change your guarantor²⁶. For a guarantor mortgage, what happens if the guarantor dies depends on the lender: some require the borrower to find a new guarantor, while others will allow the borrower to pay off some of the mortgage with the guarantor's estate⁹.

The protection available before signing is advice, not a cooling-off right. Anyone considering being a guarantor is advised to get independent legal advice and talk to a mortgage adviser before agreeing²². That advice is about understanding the size of the liability and how long it lasts, which is the thing a guarantor cannot undo later.

If the lender should not have accepted you as a guarantor

There is a route out where the lending should never have happened. You can ask to be removed as guarantor if the loan was unaffordable for the borrower, you could not afford to repay it, you were pressured, the implications were not explained, other financial links were not considered, or top-up responsibility was not made clear²⁴.

The Financial Ombudsman Service looks at whether the lender completed reasonable and proportionate checks before lending to the borrower and agreeing to the guarantor, and whether it obtained the guarantor's agreement¹⁰. Where the borrower should not have been given the loan, the ombudsman will usually say the lender should refund any interest and charges paid, with interest, and remove any adverse information recorded on the credit file; if a balance remains, it will usually say all interest and charges should be removed so the balance is only what was lent, deducting payments already made, with any overpayment refunded with interest¹⁰.

Where the guarantor should not have been accepted, the ombudsman will usually say the guarantor should be released from the guarantee, with any payments already made refunded and information added to the credit file removed¹⁰. Where a balance remains after those adjustments, it is usually fair for the borrower to pay it back, though there will be some rare instances where the ombudsman does not think this is fair¹⁰. Complaints by guarantors of loans to businesses are not covered¹⁰.

The volume of complaints shows this is a live route: guarantor loan complaints had a 52% uphold rate in Q1 2025/26⁷. Complaining your guarantor loan was unaffordable and complaining about a lender or finance company set out how to do it. Free, impartial help is available from MoneyHelper and from debt advice charities such as StepChange.

Is it financial abuse if someone pressures me to be their guarantor?

Yes. If your partner or a family member is pressuring you to act as a guarantor for a loan, this is financial abuse¹. Pressure to act as a guarantor for a loan is a form of financial abuse²⁷. That matters legally as well as practically: being pressured is one of the grounds on which a guarantor can ask to be removed²⁴.

Where the pressure comes from a partner, the wider financial picture often needs untangling at the same time. Lending money to family: agreements and interest covers arrangements between relatives, and debt: a complete guide to help, solutions and your rights sets out where to get free advice. Support organisations for economic abuse can help someone work out what has been signed in their name and what can be done about it.