Lease Modification, as per IFRS 16 refers to CHANGES made to the terms and conditions of a lease contract after its inception.
These changes can result from negotiations between the LESSOR and the LESSEE or due to changes in laws and regulations. For example, lease modifications include changes in ‘Lease Term‘, changes in ‘Rent Payments‘, and changes in the ‘Scope‘ of the lease.
Quick Definition: A lease modification is a change to the original contractual terms and conditions of a lease including alterations to scope, consideration, or lease term that was not part of the initial agreement between the lessor and lessee.
What Is a Lease Modification?
Under both ASC 842 (US GAAP) and IFRS 16 (International), a lease modification is formally defined as a change in the scope or the price of a lease that was not part of the original terms and conditions of the contract. This distinguishes modifications from routine contractual events such as index-based rent adjustments or the exercise of pre-existing renewal options.
Lease modifications are increasingly common in modern business environments. Organizations frequently need to downsize or expand their leased real estate, renegotiate payment schedules, add or remove assets from a Portfolio Agreement, or extend terms to secure continuity. Each of these actions triggers specific accounting obligations under the relevant lease accounting standard.
Modification vs. Remeasurement: A Critical Distinction
Before diving deeper, it is essential to distinguish a modification from a remeasurement. A remeasurement occurs when a pre-contractual trigger activates such as a change in a variable rate index (e.g., CPI) or the exercise of an option already included in the lease. A modification, by contrast, involves parties agreeing to new terms not contemplated in the original contract.
If a lessee and lessor agree to extend the lease term beyond the original contract window by executing an amendment, that is a modification. If the lessee simply exercises a renewal option that was already written into the original lease, that is a remeasurement even though the practical outcome looks similar.
Types of Lease Modifications
Lease modifications come in many forms. Accounting standards broadly categorize them based on whether the modification grants additional rights of use and whether those additional rights are appropriately priced at standalone market rates.
Scope Expansion
Adding new assets to an existing lease such as additional office floors, warehouse units, or vehicles. If priced at standalone market rates, this may qualify as a separate new lease.
Scope Reduction
Partial early termination i.e. returning some assets while retaining others. Requires a proportional reduction in the right-of-use (ROU) asset and lease liability, with any gain/loss recognized immediately in P&L.
Term Extension or Reduction
Agreeing to extend the lease beyond the original end date, or shortening the remaining term. Results in remeasurement of the lease liability and ROU asset using a revised discount rate.
Payment Restructuring
Changing the lease payment amounts, timing, or structure including rent deferrals or rent concessions. COVID-19 spurred widespread use of this type, with specific practical expedients issued by FASB and IASB.
Classification Change
A modification can cause a lease originally classified as an operating lease to be reclassified as a finance lease, or vice versa. This triggers full remeasurement and reclassification of the ROU asset.
Combined Modifications
Real-world modifications often combine multiple changes e.g., extending the term while also adding new assets at a reduced rate. These require careful disaggregation for accounting purposes.
The “Separate New Lease” Test
The most pivotal question in lease modification accounting is whether the modification should be treated as an entirely separate new lease or as a modification of the existing lease. Under both ASC 842 and IFRS 16, a modification qualifies as a separate new lease when both of the following conditions are met:
- The modification grants the lessee an additional right of use not included in the original lease such as additional space, an extra vehicle, or another physical asset.
- The increase in lease payments for the additional right of use is commensurate with the standalone price of that right of use, adjusted for contract circumstances.
If both conditions are satisfied, the new scope is accounted for as a fresh lease, and the original lease continues unchanged. If either condition fails, the modification is not a separate lease, and full remeasurement of the existing lease is required.
Many organizations mistakenly believe that any expansion of leased space automatically constitutes a separate new lease. However, if the pricing is below the current standalone market rate, the arrangement fails the second criterion and must be treated as a modification of the existing lease, requiring full remeasurement.
Accounting Treatment Under ASC 842 & IFRS 16
When a modification does not qualify as a separate new lease, the lessee must remeasure the lease liability and adjust the ROU asset. The remeasurement uses the discount rate as of the modification effective date. Below is a summary of the accounting treatment by modification type.
| Modification Type | Accounting Treatment | P&L Impact | Complexity |
|---|---|---|---|
| Scope Expansion (Separate Lease) | New ROU asset and lease liability recognized as of modification date | No immediate P&L | Low |
| Scope Expansion (Not Separate) | Remeasure existing liability; adjust ROU asset | No immediate P&L | Medium |
| Scope Reduction | Proportional reduction of ROU asset and liability | Gain or loss recognized immediately | Medium |
| Term Extension | Remeasure liability at revised discount rate; adjust ROU | No immediate P&L | Medium |
| Payment Restructuring | Remeasure liability; adjust ROU asset | No immediate P&L | Medium |
| Lease Classification Change | Reclassify asset; re-measure based on new classification | Potentially significant P&L | High |
Discount Rate at Modification Date
One of the most complex aspects of modification accounting is the requirement to use a revised discount rate as of the modification effective date. Under ASC 842, lessees use the rate implicit in the lease if determinable, or the incremental borrowing rate (IBR) otherwise. The IBR must reflect current market conditions as of the modification date, not the original commencement date.
Maintain a standing process for determining the IBR at various points in time. Interest rate environments shift and the organizations that rely on stale IBR estimates often face audit challenges and misstatement risk during modification accounting.
IFRS 16 vs. ASC 842: Key Differences
While both standards share the core modification framework, there are meaningful differences practitioners must understand:
| Feature | ASC 842 (US GAAP) | IFRS 16 |
|---|---|---|
| Lessee classification | Operating vs. Finance | Single model (all finance-type) |
| Short-term lease practical expedient | Available (≤12 months) | Available (≤12 months) |
| Discount rate option | IBR or implicit rate | IBR or implicit rate (same) |
| Lessor accounting on modification | Re-evaluate lease classification | Similar; refer to IFRS 16.87–89 |
| COVID-19 rent concession expedient | FASB ASU 2020-05 | IASB Amendment (May 2020) |
Step-by-Step Lease Modification Process
Successfully accounting for a lease modification requires a structured, repeatable process. Below are the key steps organizations should follow from the moment a modification is initiated through to financial reporting.
Identify the Modification Event
Detect the change in lease terms through contract review, lease management systems, or business unit notification. Capture the modification effective date i.e. the date when both parties have agreed to new terms.
Assess Scope & Nature of the Change
Determine whether the modification expands scope, reduces scope, changes the term, restructures payments, or a combination. Document the specific changes and their effective dates.
Apply the Separate New Lease Test
Evaluate whether the modification qualifies as a separate new lease. If yes, initiate a new lease schedule. If no, proceed to remeasurement of the existing lease.
Determine the Revised Discount Rate
Calculate the IBR (or implicit rate) as of the modification effective date. For organizations with many leases, maintain a tiered IBR schedule by currency, term, and credit quality.
Remeasure the Lease Liability
Recalculate the present value of remaining lease payments as of the modification date, using the revised discount rate and updated payment schedule.
Adjust the Right-of-Use Asset
For most modifications, the ROU asset is adjusted by the same amount as the lease liability change. For partial terminations (scope reductions), apply proportional reduction logic and recognize any resulting gain or loss.
Update Disclosures & Documentation
Update the lease schedule, ensure all journal entries are documented, and refresh the disclosure footnotes in the financial statements reflecting the modification and its accounting impact.
Real-World Lease Modification Examples
Technology Company Adds Two Additional Office Floors
A software company has an existing 10-year operating lease for floors 3–5 of an office tower, with 6 years remaining. It agrees with the landlord to add floors 6 and 7 effective immediately. The incremental annual payment for floors 6–7 is $800,000, which is exactly the current market rate for comparable space in the building.
Retailer Returns 40% of Warehouse Space
A retailer leases a 50,000 sq ft warehouse under a 7-year finance lease with 4 years remaining. Due to reduced inventory needs, it negotiates with the lessor to reduce the space to 30,000 sq ft (a 40% reduction), with a proportional reduction in rent. The existing lease liability is $2.4M and the ROU asset carries a net book value of $1.9M.
Manufacturer Extends Equipment Lease at Favorable Rate
A manufacturer has a 5-year operating lease on production equipment with 1 year remaining. It agrees to extend the lease for an additional 4 years at a fixed rate below the current market rate for that equipment (due to the existing relationship). The standalone market rate would be 15% higher.
Key Terms & Definitions
- Right-of-Use (ROU) Asset
- An asset recognized on the balance sheet representing the lessee’s right to use the underlying leased asset over the lease term.
- Incremental Borrowing Rate (IBR)
- The rate of interest the lessee would pay to borrow, over a similar term and with similar collateral, an amount equal to the lease payments.
- Lease Liability
- The present value of all remaining lease payments, discounted at the rate implicit in the lease or the IBR, recognized on the balance sheet.
- Modification Effective Date
- The date at which the modification is agreed upon by both lessor and lessee, triggering all accounting remeasurements under ASC 842 or IFRS 16.
- Finance Lease
- A lease where substantially all risks and rewards of ownership transfer to the lessee. Similar to a capital lease under the former ASC 840 standard.
- Standalone Price
- The price at which an entity would sell or lease the right to use an asset individually, in a separate transaction at arm’s length.
Frequently Asked Questions
What is a lease modification?
A lease modification is any change to the original terms and conditions of a lease contract including changes to scope, consideration, or lease term that was not part of the original agreement. Examples include adding leased assets, extending the lease period, changing payment amounts, or returning a portion of leased space early.
Under both ASC 842 and IFRS 16, modifications require specific accounting treatment, including potential remeasurement of the lease liability and ROU asset.
How does a lease modification differ from a remeasurement?
A modification is a new agreement between the parties, terms not contemplated in the original contract. A remeasurement, by contrast is triggered by a pre-existing contractual mechanism, such as an annual CPI rent adjustment or the exercise of a renewal option already written into the original lease.
Remeasurements use the original discount rate (with limited exceptions), while modifications typically require a new IBR as of the modification effective date.
When is a lease modification treated as a separate new lease?
A modification is treated as a separate new lease only when two conditions are simultaneously met: (1) the modification grants additional rights of use not in the original lease, AND (2) the additional consideration payable for the extra rights is commensurate with the standalone market price for those rights.
If either condition fails for instance, the price is below market, or no additional assets are added the modification is treated as a change to the existing lease requiring remeasurement.
Do lease modifications affect the income statement?
Most modifications do not create an immediate income statement impact. The primary effect is a balance sheet remeasurement, adjusting the ROU asset and lease liability simultaneously.
The key exception is a scope reduction (partial early termination). When a lessee returns a portion of leased assets, any difference between the proportional reduction in the liability and the proportional reduction in the ROU asset is recognized as a gain or loss in profit or loss on the modification date.
What discount rate should be used for lease modification accounting?
For modifications that do not qualify as separate new leases, the lessee must use a revised discount rate as of the modification effective date. This is either the rate implicit in the lease (if readily determinable) or the lessee’s incremental borrowing rate as of that date, not the original commencement date rate.
This is a common source of error. Organizations should maintain IBR documentation by currency, credit profile, and lease term to support audit inquiries.
Are rent concessions during COVID-19 treated as lease modifications?
Not necessarily. Both FASB (ASU 2021-05) and the IASB issued practical expedients allowing lessees to elect to account for qualifying COVID-19 related rent concessions such as rent deferrals or forgiveness as if they were not modifications, provided certain criteria were met (e.g., the concession arose directly from COVID-19 and the total consideration is substantially the same or less than original).
Organizations that applied these expedients avoided the need for full modification accounting, instead recognizing changes as variable lease payments or negative variable payments in the period.
- Identify the modification and determine the effective date
- Assess whether modification qualifies as a separate new lease
- If not separate: obtain revised IBR as of modification date
- Recalculate the present value of revised future lease payments
- Adjust ROU asset and lease liability accordingly
- For scope reductions: recognize gain or loss in P&L
- Update lease schedule, journal entries, and financial statement disclosures

(Qualified) Chartered Accountant – ICAP
Master of Commerce – HEC, Pakistan
Bachelor of Accounting (Honours) – AeU, Malaysia