What is Sublease?
Definition
A sublease occurs when a lessee (the original tenant) leases out all or part of a leased asset to a third party while retaining the primary lease obligation with the original lessor. Under Lease Accounting Standard (ASC 842 IFRS 16), subleases require separate accounting treatment and classification distinct from the head lease.
How Subleasing Works
In a sublease arrangement, three parties are involved: the original lessor, the lessee (now acting as sublessor), and the sublessee. The original lease remains in force, meaning the lessee continues to be responsible for payments, even if sublease income is received.
The structure typically involves:
The original lease agreement between lessor and lessee
A secondary agreement between lessee and sublessee
Independent accounting treatment for both agreements
This creates dual financial flows—lease expense and sublease income—which must be tracked separately.
Sublease Classification
Accounting for subleases depends on sublease classification, which determines whether the sublease is treated as a finance lease or an operating lease.
Classification is based on factors such as:
Transfer of control of the underlying asset
Duration of the sublease relative to the head lease
Present value of sublease payments compared to asset value
The classification assessment is performed using the right-of-use asset rather than the underlying asset, which distinguishes it from standard lease evaluation.
Accounting Treatment for Sublessors
The original lessee (sublessor) must account for both the head lease and the sublease:
Continue recognizing lease liability under the head lease
Recognize sublease income over the lease term
Derecognize or adjust the ROU asset if classified as a finance sublease
Calculations may involve estimating the present value of lease payments and applying appropriate discount rates, often influenced by the implicit rate in the lease.
Practical Example
A company leases office space for $200,000 annually and subleases half the space to another company for $120,000 per year.
Head lease expense: $200,000
Sublease income: $120,000
Net cost impact: $80,000
The company continues to recognize full lease liability but offsets expenses with sublease income, improving overall cost efficiency and supporting better cash flow planning.
Business Use Cases
Subleasing is commonly used as a strategic tool to optimize asset utilization:
Reducing unused office space costs
Managing excess capacity in logistics or warehousing
Adapting to workforce changes such as hybrid work models
Supporting restructuring without terminating leases
It plays a key role in managing lease portfolios and improving financial flexibility.
Financial Reporting and Disclosure Impact
Subleases introduce additional reporting requirements:
Separate recognition of lease expense and sublease income
Enhanced transparency in lease disclosure requirements
Consideration of foreign currency lease adjustment for cross-border leases
Alignment with multi-entity lease accounting for global organizations
Accurate reporting ensures stakeholders understand the economic impact of subleasing activities.
Governance and Controls
Effective governance ensures proper handling of subleases:
Implement segregation of duties (lease accounting) in contract approval and accounting
Regularly reassess classification and assumptions
Maintain documentation for lease external audit readiness
Monitor sensitivity through lease discount rate sensitivity
These controls support compliance and consistency across reporting periods.
Relationship with Lease Modifications
Subleasing differs from lease modification accounting, where the original lease terms are changed. In a sublease, the original lease remains unchanged, and a new agreement is layered on top.
Organizations may evaluate both approaches depending on their financial and operational goals, particularly when dealing with multi-currency lease accounting scenarios.
Summary
A sublease allows a lessee to re-lease an asset to a third party while retaining the original lease obligation. It introduces dual accounting considerations, requiring careful classification, measurement, and disclosure. When managed effectively, subleasing enhances asset utilization, improves financial flexibility, and supports better cash flow outcomes.