If you share a flat with friends or a partner and your names are all on one tenancy agreement, you have probably signed up for something called joint and several liability without realising what it actually means. I have covered the UK rental market for years, and this single clause is the one that causes the most confusion — and the most financial damage — when things go wrong. Put simply, it means that if one flatmate stops paying rent, the landlord can come after you for the full amount, not just your share.
That is the reality of joint liability. It does not matter if you paid your half on time every month. If the other person does not, the landlord can demand the missing rent from you. And from 1 May 2026, the rules have changed in ways that make it even more important to understand what you have signed. Here is what you actually need to know.
Before we go further, if you are still deciding between a joint tenancy and renting a room individually, it is worth reading our guide on decoding UK lease agreements — it explains the key differences in plain language. And if you are worried about protecting your deposit or belongings, a small safe with a PIN keypad can give you peace of mind for valuables in a shared home.
What joint and several liability actually means for you
The most important thing to grasp is that joint and several liability is not about fairness — it is about collection. If you and two friends rent a place for £1,800 a month and one friend stops paying, the landlord does not have to chase that friend. They can come straight to you for the full £1,800. Legally, you then have to try to recover the missing share from your friend yourself. That is a civil matter between you and them, and the landlord is not involved.
This is the standard setup for friends or couples renting together. It is fundamentally different from renting a room in a house of multiple occupation (HMO), where each person has their own tenancy agreement and is only responsible for their own rent. I have seen tenants assume they are only on the hook for their share, and that assumption can be expensive. If you are thinking about moving in with people you do not know well, my advice is to get everything in writing between yourselves before you sign — a simple agreement about how you will handle a flatmate leaving or falling behind can save a lot of trouble later.
Why the 2026 changes make this more urgent
The Renters’ Rights Act 2025, which took full effect on 1 May 2026, has reshaped how tenancies work in England. Fixed-term assured shorthold tenancies are gone. Every tenancy is now an assured periodic tenancy from day one. That sounds like a small change, but it has big consequences for joint tenants.
Under the old system, if one tenant wanted to leave during a fixed term, they often could not without the landlord’s agreement. Now, any one joint tenant can end the tenancy for everyone by serving a valid notice to quit. They must give at least two months’ notice in writing, and they do not need the consent of the other tenants. When that notice expires, the tenancy ends for everyone. The remaining tenants have no automatic right to stay — they must negotiate a brand-new tenancy with the landlord.
This affects around 1 in 4 UK households who rent privately, according to recent data. If you are in a joint tenancy, you could come home one day to find your flatmate has given notice and your home is about to disappear. The only way to prevent this is to agree a variation of the tenancy in writing, removing the departing tenant and adding a replacement if needed, with the landlord’s consent.
There is also a new requirement that landlords must have given tenants an official Information Sheet about the Renters’ Rights Act by 31 May 2026. If they did not, they can be fined up to £7,000. If you never received this document, it is worth checking with your landlord or letting agent.
Where people go wrong with joint tenancies
Assuming you are only liable for your share
This is the most common mistake I come across. Tenants split the rent between themselves and assume the landlord will only chase the person who does not pay. That is not how joint and several liability works. The landlord can pursue any tenant for the full amount. If you are the one with the best credit score or the most savings, you are the most likely target. The landlord does not have to pursue everyone equally — they can claim the full debt from the most solvent tenant.
What I would do in this situation: before signing, have an honest conversation with your flatmates about what happens if someone cannot pay. A written agreement between you — even just a text or email — can help you recover money later, but it will not protect you from the landlord’s claim.
Thinking a guarantor only covers their own child
If you are a student and your parent acts as a guarantor, they are not just guaranteeing your share. Under a joint tenancy, any guarantor is jointly and severally liable for the entire rent arrears of all tenants. If your flatmates stop paying, your parent can be pursued for the full amount. The only way to limit a guarantor’s liability to one person is to use separate room-by-room tenancies, which is a different legal structure entirely.
Believing you can leave quietly without affecting others
Under a periodic tenancy, if you want to leave, you can serve a notice to quit and end the tenancy for everyone. You do not need permission from your flatmates. But doing this without warning can leave them scrambling to find a new place or negotiate a new tenancy. The better approach is to agree a variation of the tenancy in writing, removing yourself and, if the landlord agrees, adding a replacement tenant. This keeps the tenancy alive for everyone else.
Ignoring the new Section 8 rules for rent arrears
With Section 21 abolished, the only way a landlord can regain possession for rent arrears is through Section 8. The threshold for mandatory possession is now three months (or 13 weeks) of arrears under Ground 8. But because almost every Section 8 case now requires a court hearing, the landlord must have a clear, consolidated rent ledger showing the total debt for the property — not individual pots for each tenant. If you are behind, the landlord can pursue one tenant, all tenants, or the guarantor. Often, they go after the non-defaulting tenant or the guarantor if the tenant who has not paid has no money or has moved abroad.
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| Scenario | Who the landlord can pursue | What happens to the tenancy |
|---|---|---|
| One tenant stops paying rent | Any or all tenants for the full amount | Tenancy continues; landlord can seek possession via Section 8 after 3 months’ arrears |
| One tenant serves notice to quit | N/A — tenancy ends for everyone | All tenants must leave; remaining tenants must negotiate a new tenancy |
| Guarantor is called upon | Guarantor is liable for the full rent arrears of all tenants | Tenancy continues; guarantor can be pursued alongside or instead of tenants |
| All tenants want to leave by mutual agreement | N/A — surrender of tenancy | Tenancy ends by mutual surrender; no notice required |
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How to protect yourself in a joint tenancy
Get a written agreement between flatmates
This is not a legal requirement, but it is the single most practical step you can take. A simple document signed by all tenants can set out how you will handle a flatmate leaving, how you will split rent if someone falls behind, and how you will recover money from a non-paying tenant. It will not override the tenancy agreement, but it gives you a clear basis to pursue each other in small claims court if needed. If you need help drafting this, speaking to a tenant landlord lawyer can clarify what is enforceable.
Know how to remove or add a tenant properly
If a flatmate wants to leave and you want to stay, do not let them just hand in their keys. The correct process is to agree a variation of the tenancy in writing with the landlord. This removes the departing tenant and, if you are replacing them, adds a new tenant. The landlord’s consent is required, and a new tenancy agreement or deed of assignment should be signed. The deposit prescribed information must also be re-served if the tenancy changes. Informal verbal arrangements are unenforceable and leave you exposed.
- 1Agree the change with all tenantsDiscuss who is leaving and who (if anyone) is replacing them. Get written consent from all current tenants before approaching the landlord.
- 2Get the landlord’s written consentThe landlord must agree to the change. They may require a new tenancy agreement or a deed of assignment. Do not proceed without this.
- 3Complete Right to Rent checksIf a new tenant is joining, the landlord must carry out a Right to Rent check before they move in. This is a legal requirement.
- 4Re-serve the deposit prescribed informationWhen the tenancy changes, the deposit prescribed information must be re-served to all tenants. Failure to do this can affect the validity of the deposit protection.
- 5Sign the new or varied agreementAll tenants and the landlord should sign the updated agreement. Keep a copy for your records. Verbal arrangements are not enforceable.
Understand the guarantor trap
If you are acting as a guarantor for someone in a joint tenancy, you need to know that your liability is not limited to that person. You are on the hook for the entire rent arrears of all tenants. The only way to limit a guarantor’s liability to one person is to use separate room-by-room tenancies, which are typically used in HMOs. If you are a parent considering acting as a guarantor for your child’s student house, ask the landlord whether the tenancy is joint or individual. If it is joint, your liability extends to every tenant in the property.
What to do if you are being pursued for someone else’s rent
If the landlord comes after you for rent that another tenant has not paid, your first step is to check the tenancy agreement and the rent ledger. Under the new rules, the landlord must have a consolidated rent ledger showing the total debt for the property. If they cannot produce this, it may affect their ability to pursue possession. You can also seek legal advice. A tenant landlord lawyer can advise on your options, including whether you can recover the money from the non-paying tenant through small claims court. If you are the non-paying tenant, the landlord can pursue you, your flatmates, and your guarantor — so it is in everyone’s interest to resolve the arrears quickly.
Frequently asked questions about joint tenancy liability
Can I be evicted if my flatmate stops paying rent? ▾
Can I leave a joint tenancy without my flatmates’ permission? ▾
Is a guarantor liable for the whole rent or just one person’s share? ▾
What happens if one tenant dies? ▾
Can the landlord increase the rent if one tenant leaves? ▾
Do I need a lawyer to remove a tenant from a joint tenancy? ▾
Joint tenancy liability is one of those things that feels abstract until it becomes your problem. The key takeaway is simple: you are responsible for the full rent, not just your share. That means you need to trust your flatmates, have a plan for when things go wrong, and understand that one person’s decision can affect everyone. If you are about to sign a joint tenancy, take the time to read the agreement carefully and ask the landlord or letting agent to explain anything you do not understand. A few minutes of checking now can save you thousands of pounds later.
If this was useful, you might also want to read common mistakes in rental lease agreements you should avoid.
Sources and Further Reading
Your ultimate UK apartment leasing checklist — A step-by-step guide covering everything from viewing a property to signing the agreement, including what to check before you commit to a joint tenancy.
Joint tenancy guide for landlords and tenants. LetSafe UK, 2026.
Joint and several liability explained. OpenRent, 2026.
Renters’ Rights Act 2025 Information Sheet. UK Government, 2026.
