- Agreeing to be a guarantor doesn't affect your credit score by itself. Landlords and letting agents usually run a soft credit check on you, which stays invisible to other lenders and has no impact on your score.
- Your credit can be affected if the tenant falls behind on rent and you're asked to cover it but don't, especially if the situation ends up as a County Court Judgment against you.
- If you'd rather not put your own credit at risk for a friend or family member's tenancy, Rentmigo can act as the guarantor instead.
Being asked to guarantee someone's rent is a bigger decision than it first looks.
You're not just adding your name to a form, you're agreeing to cover the rent if the tenant can't. So it makes sense to want to know what that could do to your own credit before you agree.
The short version is that becoming a guarantor doesn't damage your credit on its own. What matters is what happens after, especially if the tenant misses payments and nobody sorts it out quickly.
If you're the one being asked to guarantee a tenancy and want to understand exactly what you'd be taking on, or you'd rather someone else carried that risk instead, Rentmigo can act as the guarantor in your place.
What happens to your credit when you agree to be a guarantor
Nothing shows up on your credit file just from agreeing to be a guarantor.
Before a landlord or letting agent accepts you, they'll usually run a credit check to confirm you meet their requirements, things like a stable income and no serious credit issues.
This is typically a soft check, which means it's visible only to you and doesn't affect your score or leave a mark that other lenders can see.
That check exists to protect the landlord, not to penalise you. It's their way of confirming that if something did go wrong, you'd realistically be able to step in.
Our guide on whether a guarantor needs a good credit score covers what landlords tend to look for, and who can legally act as a guarantor in the UK if you're unsure whether you'd even qualify.
Does your credit score drop if the tenant misses rent?
Not automatically. Missing a rent payment doesn't land on your credit file the same way a missed loan or credit card payment would.
Most private landlords don't report monthly rent payments to credit reference agencies the way a bank reports loan repayments. So if the tenant falls behind, there isn't an instant mark against you just because of that missed payment.
What usually happens instead is that the landlord contacts you, as the guarantor, and asks you to cover the shortfall. If you pay when you're asked, this shouldn't affect your score at all. The risk only really starts if you're unable or unwilling to pay once you've been asked, because that's when the situation can escalate.
Can unpaid rent lead to a County Court Judgment against you?
Yes, in England and Wales, if a landlord takes legal action over unpaid rent and the court rules against you, this can result in a County Court Judgment, known as a CCJ, being registered specifically in your name.
Landlords can pursue the tenant, the guarantor, or both for rent arrears once a tenancy has broken down. If the claim succeeds and the debt still isn't paid, a CCJ is what makes the judgment official.
A CCJ stays on your credit file for six years and is one of the more serious things a lender can see when you apply for credit, a mortgage or even another tenancy.
Paying it off quickly, within a month of the judgment, can sometimes get it removed from your record, but leaving it unpaid means it stays visible and active for the full six years.
Scotland and Northern Ireland use different court processes for recovering unpaid debts, so if your tenancy is outside England or Wales, the exact route a landlord would take looks a little different, even though the underlying risk to your credit is similar.
If you'd rather not put your own credit at risk for a friend or family member's tenancy, Rentmigo can act as the guarantor instead.
Does being a guarantor link your credit file to the tenant's?
Not just from signing a tenancy guarantee. A standalone rent guarantee doesn't automatically create the kind of financial association you'd get from something like a joint bank account or a joint loan.
Where a connection can appear is if things end up in court together, for example, if a landlord names both the tenant and the guarantor on the same claim. At that point, the court record itself links you, rather than the original guarantee doing so.
How long are you actually exposed for as a guarantor?
For as long as the guarantee document itself says, and in England that's no longer anchored to a fixed tenancy term.
Since 1 May 2026, the Renters' Rights Act has abolished fixed-term tenancies in England. New tenancies start as periodic, or rolling, agreements with no built-in end date, and existing fixed-term tenancies converted automatically on that date. A tenant can now leave by giving two months' notice, but otherwise the tenancy simply continues.
That matters for guarantors because a guarantee written to last "for the duration of the tenancy" no longer has a natural cut-off point to fall back on.
Some guarantee documents set their own fixed limit regardless of how long the tenancy runs, others don't. Before agreeing to guarantee anyone's rent in England, it's worth reading exactly when the guarantee ends, because you can no longer assume it stops when a fixed term would have.
This is specific to England. Welsh guarantor contracts can still be agreed as fixed-term or periodic, and Scotland's tenancies have had no fixed term since 2017, for different reasons. Our guide on how the Renters' Rights Act affects international tenants covers more of what's changed.
Why some people choose not to ask family or friends to be a guarantor
None of this makes being a guarantor impossible or unreasonable. But it does explain why many tenants think twice before asking someone they know to take it on.
Even a small chance of a CCJ, or being chased for missed rent, is a lot to ask of a parent or friend, especially if the guarantee runs for years rather than months.
And if something does go wrong, it can put real strain on the relationship, not just the finances.
That's part of why professional guarantor services have become more common. Our guides on professional guarantor versus family guarantor and guarantor versus rent guarantor service go into how the two options actually compare.
How Rentmigo removes that risk
Rentmigo can act as your guarantor instead, so no one in your personal life has to take on the financial responsibility, or the risk to their own credit file, on your behalf.
You apply online, show that you can afford the rent, and if you're approved, Rentmigo takes on the guarantor role for the landlord.
Your family or friends aren't named on the agreement and aren't exposed if anything goes wrong later. You can read a full breakdown in our guide on how Rentmigo works.
If you don't have a guarantor who's willing to take on that risk, or you'd simply rather keep your tenancy separate from your family's finances, check your eligibility with Rentmigo and see whether we can guarantee your rent instead.
