So how much does a guarantor need to earn?#

There's no fixed figure. No law sets one, and there's no industry-wide minimum — every lender, letting agent and landlord decides for themselves.

What they're all doing, though, is checking the same thing: can this person comfortably cover the payments if they ever need to? That check is called an affordability assessment, and while there's no official threshold to pass, there is a widely used rule of thumb.

Here's how that works in practice:

If you're... Paying each month Your guarantor may need to earn
Renting a property £1,000 £4,000 a month
Repaying a mortgage £700 £3,150 a month

Treat those as a guide rather than a target. Every lender has its own rules on who qualifies and how much they need to earn, so the real number could be higher or lower.

What a guarantor actually agrees to#

A guarantor is someone who promises to pay another person's debt if that person doesn't repay a loan or meet other financial obligations.

You'll usually come across two kinds:

  • Loan guarantors, including for mortgages
  • Rent guarantors, for a tenancy

Either way, the promise is the same. Your guarantor is telling the lender or landlord: if this person stops paying, I'll cover it. That reassurance is often what gets an application approved when it otherwise wouldn't be.

It's a serious commitment. If a guarantor can't meet those obligations when they're called on, they could face legal claims for the outstanding amount.

What a guarantor is not#

This is the part people most often get wrong, and it's worth being clear on before anyone signs.

A guarantor isn't a primary party to the agreement. That means:

  • If you're renting, your guarantor won't be listed as a tenant
  • If it's a mortgage, your guarantor won't be a joint owner. They don't own a share of the property and won't appear on the deeds

In other words, they take on the risk without getting any of the ownership. That's the trade-off, and it's why the decision deserves a proper conversation rather than a quick favour.

When a guarantor actually has to pay#

A guarantor isn't making payments alongside you. They sit behind you, as a backstop.

Before a guarantor is legally required to step in, the lender has to formally default the borrower (opens external site) — meaning there's been a failure to meet the legal obligations of the loan. Up to that point, your guarantor owes nothing.

If everything goes to plan, they'll never pay a penny.

What they could end up covering#

If payments are missed, the guarantor becomes responsible for the outstanding obligations — the money owed — and has to repay it within the timeframe set out in their contract.

If they don't, they could face legal action, and it could affect their own credit.

With renting, a guarantor's contract can stretch further than just the rent. Alongside unpaid rent for the full length of the tenancy, they might also be asked to cover:

  • Damage to the property
  • Extra fines
  • Interest on any unpaid rent

The contract should spell all of this out, so read it properly before signing.

Can a guarantor qualify without a big salary?#

Yes — a guarantor doesn't technically have to "earn" anything at all.

What lenders and landlords care about is whether the payments can be met, not where the money comes from. That could be:

  • Income from work
  • Savings
  • Property assets

Some lenders and landlords will only accept a guarantor with a steady income. Plenty won't insist on it, as long as their criteria are met overall.

Why credit history often matters more than income#

Here's the bit that surprises people. A good credit history is arguably more important than what someone earns right now.

Someone with a low credit score probably won't be accepted as a guarantor, however healthy their salary is.

It comes down to confidence. The whole point of a guarantee is reassurance, and a low score raises doubts about whether that person will reliably make payments — which is exactly what's being promised.

If you're planning to ask someone to be your guarantor, it's worth them checking their credit report first, so there are no surprises partway through an application.

Who can be a guarantor in the UK?#

To start with, a guarantor needs to be an adult living in the UK. Most banks and lenders set a minimum age (opens external site), and some also apply a maximum age limit.

Beyond that, they'll need:

  • A good credit score
  • Enough income or savings to cover the payments set out in the contract

It also helps if they own a property, though that isn't always necessary.

Guarantors are often close relatives — a parent or a sibling — but they don't have to be. Some lenders want the two of you to have known each other for at least two years. Otherwise, anyone who meets the lender's criteria can do it.

For renting, the requirements are much the same. Friends or family can act as a rent guarantor, but they usually need to live in the UK and own a property. Ultimately, it's up to the landlord who they accept.

What your guarantor will need to provide#

On top of the basics above, a guarantor is normally asked for:

  • Proof of address and identification — usually a driving licence or passport, plus bank statements or utility bills showing their address
  • Permission to run a credit search — looking at their credit report to assess past borrowing and financial stability
  • Recent wage slips. If they're retired, proof of income from investments, or proof of savings — typically a bank statement

Every lender, estate agent and landlord asks for a slightly different set, so expect some variation.

How long is a guarantor liable?#

It depends on the contract. For a loan, the agreement decides — and that could mean staying liable until the loan is repaid in full.

With mortgages, there's often a way out. Many lenders let borrowers remortgage and remove a guarantor once enough equity has built up, so a guarantor doesn't necessarily stay liable for the whole mortgage term.

Equity is simply the share of your home you own outright. Say a property cost £200,000: you put down a £50,000 deposit and borrowed £150,000. That gives you 25% equity. It grows with every mortgage payment you make, until you own 100% of your home.

There's no set amount of equity needed to remove a guarantor, because every provider has its own rules. It also depends on your payment history, so paying on time each month makes a real difference. The only way to know for certain is to ask your mortgage lender about their policy.

Guarantors on a tenancy agreement#

Again, the contract decides. Guarantors normally stay on a tenancy agreement for the whole length of the tenancy (opens external site), which keeps the landlord covered for unpaid rent and damage.

Your tenancy agreement (opens external site) should state how long the rental period runs and when the guarantor's responsibilities end. There are two types:

  • Fixed-term agreements — lasting a set period, such as 12 months. The guarantor's responsibilities won't extend beyond that. The contract can be renewed, but everyone has to agree to it
  • Periodic agreements — usually rolling month to month. The guarantor can stay in place for the whole tenancy, which means their liability can extend indefinitely

That difference matters a lot. One is a commitment with an end date; the other doesn't have one. Make sure you both know which you're signing.

Can you change your mind?#

Once someone has agreed to be a guarantor and signed the contracts, they can't back out.

That's because the decision to lend, rent or approve a mortgage was based partly on their credit history, proof of income and savings. Take the guarantor away and the approval no longer stands up.

So it's worth taking time over the conversation. Once the ink is dry, it's binding.

Renting without proof of income#

Given how binding all this is, it's fair to ask whether you can rent without proof of income at all — either your own or a guarantor's.

It's possible, but you'll probably find it difficult.

There are plenty of good reasons you might not have proof of income. Perhaps you're a student, you've moved to a new area, you're waiting for a new job to start, or you've recently come to the UK for the first time.

In that situation, the best approach is to be upfront with estate agents and landlords. Explain why you can't provide proof of income and try to put their mind at ease. Things that can help:

  • Private savings that would cover the rent
  • An offer letter from a new employer setting out your future salary
  • Rent upfront — some landlords will accept a period in advance, such as six months
  • References from previous landlords, for extra reassurance

If paying upfront isn't affordable, you'll most likely need a guarantor with proof of savings or income instead. Or you could look at finding a co-signer.

Guarantor vs co-signer#

These two get mixed up all the time, but they're not the same thing.

Guarantor Co-signer
Rights to assets No right to any assets, such as the house Jointly owns assets with the borrower
When they pay Only steps in if the borrower or renter has trouble paying Responsible for repayments straight away
Share of payments Covers the shortfall if one arises Pays a set percentage from the start

Co-signers take on more immediate responsibility (opens external site) than guarantors — but unlike a guarantor, they get joint ownership in return.

The key things to remember#

  • A guarantor promises to pay another person's debt if that person fails to make their repayments. That's different from a co-signer, who is responsible for payments from day one and jointly owns the assets.
  • There's no set amount a guarantor has to earn. It varies between individual lenders and landlords.
  • As a rule of thumb, expect a monthly income of four to five times the monthly payment.
  • Income isn't the only route — savings and property assets can count too.
  • A guarantor normally needs to be an adult living in the UK with a good credit score.
  • A poor credit score is more likely to rule someone out than a modest income.
  • Once the agreement is signed, a guarantor stays financially liable for the full period set out in the contract, and can't back out.