Commercial personal guarantee
Commercial personal guarantee before signing
A personal guarantee can change the risk of a commercial lease. Even if the business case looks workable, a guarantee may increase the downside for the person signing if rent, costs, trading, or exit assumptions go wrong.
Use this page to think about guarantee risk before you sign, then run the free commercial check if you want to pressure-test the numbers as well.
YieldLens UK provides indicative decision-support only. It is not financial advice, legal advice, tax advice, a valuation, a RICS valuation, building survey advice, or a substitute for professional due diligence.
Quick answer
- Check whether a guarantee is being required at all.
- Check whether it is capped, unlimited, or tied to more than rent.
- Read it together with the deposit, lease length, and break clause.
- A solicitor should review the wording before it is treated as settled.
Why the guarantee matters
A guarantee can turn a business risk into a personal one.
If the lease underperforms, the downside may not stop with the company.
Compare the protections
A personal guarantee sits alongside other protections, not instead of them.
The practical question is what happens if the lease underperforms.
Rent deposit
Cash held by the landlord at the start of the lease.
Personal guarantee
A separate promise by an individual to back lease obligations if needed.
Director guarantee
A common form of guarantee where a director or owner is asked to stand behind the lease.
Rent-free period
Can improve launch cash, but does not remove guarantee exposure.
Break clause
Can reduce commitment length, but the guarantee wording still matters.
Lease length
Longer terms can increase the period of exposure if the site underperforms.
Assignment and subletting
May help with exit flexibility, depending on the lease wording.
Repairing obligations
Can create extra downside if the lease ends badly or the premises need work.
Illustrative example
A thin opening buffer makes personal downside more important.
This is a safe fictional example, not a real case study.
Annual rent
£60,000
Monthly rent
£5,000
Expected monthly revenue
£24,960
Rent burden
20.0%
Opening cash buffer
£9,000
Fit-out
£50,000
If a lease has a 20.0% rent burden and only £9,000 left after opening costs, the downside position matters. A personal guarantee should be understood alongside rent, deposit, lease length, break clause, and exit flexibility.
Questions to ask
Ask the questions that make the guarantee position clear.
These are the checks that should be answered before the guarantee becomes part of the deal.
How YieldLens helps
The free commercial check tests the pressure points around the guarantee question.
YieldLens can show whether the site still looks viable once the commercial assumptions are tested, but it cannot review guarantees or assess legal liability.
Free check
- Rent burden, opening cash pressure, break-even customers, downside trading, and lease pressure points.
- A quick screen for whether the site deserves deeper work.
£49 Standard Commercial Viability File
- Assumption review, stress-test interpretation, negotiation levers, evidence checklist, and lease questions.
- A printable decision memo tied to the saved result.
- Useful when the commercial questions need to be organised before signing.
For the full lease pressure test, see the commercial lease viability check.
Related pages
Use the next page that matches the lease question you are asking.
These pages stay close to the guarantee, deposit, and exit questions.
Commercial lease checklist before signing
Use the hub to step through the wider pre-signing checks.
Commercial heads of terms before signing
Check the early deal points before the lease gets expensive.
Commercial lease deposit before signing
Check how cash at the start compares with guarantee exposure.
Commercial lease length before signing
See how the commitment period affects the downside.
Commercial break clause before signing
Check whether the exit date is enough if things go wrong.
Frequently asked questions
Commercial personal guarantee FAQs
Short answers for people checking downside exposure before they sign.
What is a personal guarantee in a commercial lease?
A personal guarantee is a promise by an individual, often a director, to back the lease obligations if the business cannot pay. The wording and scope matter.
Why does a personal guarantee matter before signing?
It can increase downside beyond the business itself, especially if rent burden is high or opening cash is thin.
Is a personal guarantee the same as a rent deposit?
No. A deposit is cash held by the landlord. A guarantee is a separate promise that can expose the person signing it if the lease fails.
Should a guarantee be checked alongside the break clause?
Yes. A break clause may reduce the lease term, but the guarantee wording can still matter if the lease ends badly or conditions are not met.
Can a personal guarantee affect lease viability?
Yes. It can change the downside exposure and should be considered with rent, deposit, lease length, and exit flexibility.
Is YieldLens giving legal advice on personal guarantees?
No. YieldLens UK provides indicative decision-support only. It does not review guarantee wording or replace legal, lease, valuation, tax, or financial advice.
Important disclaimer
YieldLens UK provides indicative decision-support only. It is not financial advice, legal advice, tax advice, a valuation, a RICS valuation, or a substitute for professional due diligence.