Commercial Lease Renewal Stamp Duty
SDLT on commercial lease renewals under the Landlord and Tenant Act 1954 — holdover periods, overlap relief, contracting out, and worked examples.
Key Takeaways
- A commercial lease renewal under the Landlord and Tenant Act 1954 is treated as a grant of a new lease for SDLT purposes
- Overlap relief prevents double taxation by crediting SDLT paid on the old lease for any period also covered by the new lease
- The holdover period (statutory continuation) does not trigger new SDLT — it is merely the existing lease continuing on its original terms
- Contracting out removes the tenant's automatic renewal rights, meaning no holdover period but also no automatic overlap relief framework
- The effective date for SDLT on a renewed lease is the date the new lease is completed or substantially performed
- If renewed rent is significantly higher than the rent used in the original NPV calculation, an abnormal rent increase may require a supplementary SDLT return
- SDLT must be filed within 14 days of the effective date of the new commercial lease
- Lease renewals at identical rent to the expired lease can still trigger SDLT if the original NPV calculation was below the threshold but the new longer term pushes NPV above £150,000
In this article
Commercial Lease Renewals and SDLT
When a commercial lease expires and a new lease is negotiated, that renewal is a fresh transaction for SDLT purposes. You effectively receive a new lease grant, and SDLT applies to any premium paid and to the NPV of rent under the renewed terms.
This can catch business tenants by surprise. If you have occupied the same premises for many years without ever filing an SDLT return for a renewal (perhaps because the previous lease's NPV was below threshold), a new longer term or significantly higher rent on the renewed lease may push the NPV above the £150,000 commercial nil-rate band and create a tax liability.
Our commercial lease stamp duty guide covers the fundamentals of NPV calculation in detail. The lease transactions guide provides a broader overview of all lease SDLT situations.
The Landlord and Tenant Act 1954
The Landlord and Tenant Act 1954 gives most business tenants in England and Wales "security of tenure" — the right to remain in their premises when a lease expires and to request a new tenancy on reasonable terms. The Act sets out a formal procedure for renewal that both parties must follow.
The Renewal Process
- Section 25 Notice (landlord): The landlord can serve a section 25 notice to terminate the existing tenancy and set out whether it will oppose renewal and on what grounds.
- Section 26 Request (tenant): Alternatively, the tenant can serve a section 26 request to start the renewal process proactively.
- Negotiation: Parties negotiate the terms of the new lease — rent, term length, break clauses, alterations, and alienation provisions.
- New lease grant: Once agreed, a new lease is executed. This is the taxable event for SDLT.
SDLT applies at the point the new lease is granted. The holdover period between lease expiry and new lease grant does not attract new SDLT — it is governed by the original lease terms.
New Lease vs Lease Continuation
A critical distinction for SDLT is between a genuine new lease renewal and a mere statutory continuation of the old lease.
| Situation | SDLT Treatment |
|---|---|
| Statutory continuation under LTA 1954 (holding over) | No new SDLT — old lease continues, no new lease granted |
| New lease granted under LTA 1954 renewal process | SDLT on new lease with overlap relief available |
| New lease outside LTA 1954 (contracted-out) | SDLT on new lease; overlap relief may apply in principle |
| Informal extension of existing lease (variation) | May be a deemed surrender and regrant — see S&R guide |
Holdover Period and SDLT
When a protected tenancy under the LTA 1954 expires but the tenant continues to occupy while renewal negotiations proceed, the tenant is said to be "holding over" or in a "statutory continuation". The tenancy continues on the same terms as the expired lease.
No SDLT arises during the holdover period. The original lease's SDLT was paid when that lease was granted. The statutory continuation is merely that lease persisting by operation of law — there is no new lease, no new taxable event.
Holdover can continue for months or even years if negotiations are prolonged or if the tenant pursues an opposed renewal through the courts. Throughout this period, SDLT remains dormant.
SDLT Clock Restarts at New Lease
Once the new lease is signed and dated (even if backdated to the original expiry), the SDLT clock starts. The 14-day deadline runs from the effective date of the new lease — not from when the holdover started.
Overlap Relief Explained
Overlap relief is an SDLT mechanism that prevents double taxation when a new lease covers the same period of time as was already taxed under a previous lease. It operates by giving a credit for the NPV of the overlap period.
How Overlap Relief is Calculated
The overlap period is the number of years at the start of the new lease that were also covered by the expired lease. The NPV of those years (based on the rent under the original lease, discounted at 3.5%) is subtracted from the NPV of the new lease before applying the NPV rate bands.
Overlap Relief Formula
The NPV of the overlap period uses the old lease's rent (not the new rent) and the same 3.5% discount rate, calculated as if that period were a standalone lease from year 1.
Overlap relief is automatic — HMRC's SDLT calculation for commercial lease renewals incorporates it. Your solicitor will input the relevant details into the SDLT return and the system will apply the credit.
Contracting Out of Security of Tenure
Under section 38A of the LTA 1954, a landlord and tenant can agree to exclude the statutory renewal rights before the lease is granted. This is known as "contracting out". A contracted-out lease gives the tenant no automatic right to renew at expiry.
SDLT Implications of Contracting Out
Contracting out does not affect the SDLT on the initial lease — it is still calculated on the premium and NPV of rent in the usual way.
At the end of a contracted-out lease, there is no statutory continuation. The tenant must vacate or negotiate a new lease as a matter of contract. A new lease is a fresh SDLT transaction. Overlap relief may still be available in principle if the new lease starts on the same day the old one expired and the parties can show continuity, but HMRC's position on this can be more nuanced. Specialist advice is recommended.
Why Landlords Insist on Contracting Out
Many landlords — particularly in prime retail or office locations — insist on contracting out to retain flexibility at lease expiry. If you are taking a contracted-out lease, be aware that renewal is not guaranteed and any new lease will be a fresh SDLT event with no automatic overlap mechanism.
NPV Calculation on the Renewed Lease
The NPV calculation for a renewed commercial lease follows the same method as for any new commercial lease — discount all future rent at 3.5% per year and apply the commercial NPV rate bands (0%/1%/2%). The key difference is that overlap relief reduces the effective NPV before the rates are applied.
If the renewed lease has a significantly higher rent than the expired lease, this can produce a materially higher NPV — and therefore higher SDLT — even after overlap relief. Market rent reviews or open-market renewals that reflect a rising market can create unexpectedly large SDLT bills.
Worked Example: Renewing a 5-Year Commercial Lease at Higher Rent
Scenario Details
- • Original lease: 5 years at £30,000/year
- • Renewal: new 5-year lease at £45,000/year
- • Premium: none
- • Overlap period: 5 years (the original lease's full term is the overlap)
Step 1: NPV of Original Lease (overlap amount)
NPV of £30,000/year for 5 years at 3.5%:
This is the overlap credit. (Assume this was below threshold originally — no SDLT was paid on it, but we still apply overlap relief as if it had been taxed from year 1.)
Step 2: NPV of New Lease
NPV of £45,000/year for 5 years at 3.5%:
Step 3: Apply Overlap Relief
Step 4: Apply NPV Rate Bands
Taxable NPV of £67,725 is below the £150,000 threshold.
Total SDLT: £0
The overlap relief effectively eliminated the SDLT liability on this renewal despite the higher rent.
Higher Rent Scenarios — When SDLT Applies on Renewal
Overlap relief does not always eliminate the SDLT on a renewal. Consider a scenario where the rent increase is significant:
Substantial Rent Increase Example
- • Original lease: 5 years at £20,000/year (NPV = £90,100)
- • Renewal: 10 years at £80,000/year (NPV = £665,360)
- • Overlap credit: £90,100
Apply NPV rate bands:
- • 0% on £150,000 = £0
- • 1% on £425,260 = £4,253
Frequently Asked Questions
Do I need to file an SDLT return on a commercial lease renewal even if no tax is due?
Generally, an SDLT return (SDLT1) is required for any notifiable land transaction. A commercial lease renewal is typically notifiable. However, if both the premium and the taxable NPV (after overlap relief) are below the nil-rate thresholds and the transaction is under the relevant turnover, specialist advice should confirm whether notification is required.
Can I negotiate overlap relief directly with HMRC?
Overlap relief is a statutory entitlement — it is not discretionary and does not require negotiation. It applies automatically when a new lease is granted to the same tenant on the same or adjacent premises, replacing or renewing a previous lease. The calculation is done through the SDLT return.
What if the renewal is agreed verbally before the formal lease is signed?
The SDLT effective date is when the lease is substantially performed — which can include when the tenant takes possession under the new agreed terms or makes the first payment of rent. Verbal agreements can trigger substantial performance. SDLT can become due before the formal lease document is signed.
What businesses can opt out of the LTA 1954?
Any business tenancy can be contracted out of LTA 1954 protection provided the correct procedure is followed before the lease is granted: the landlord must serve a health warning notice, and the tenant must make a statutory declaration. Agricultural tenancies and tenancies for a term not exceeding 6 months are excluded from the 1954 Act automatically.
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Emma Richardson, MRICS
Chartered Surveyor & Property Tax Specialist
Emma Richardson is a RICS-qualified Chartered Surveyor with over 12 years of experience in UK property taxation. She founded Stamp Duty Calculator to help buyers understand the complex world of property transaction taxes.