IFRS 16 Lease Modifications: Every Scenario Explained with Journal Entries

What is a Lease Modification?

IFRS 16.44 defines it as "a change in the scope of a lease, or the consideration for a lease, that was not part of the original terms and conditions." Changes include:

• Adding or removing an asset
• Increasing or decreasing lease payments
• Extending or shortening the lease term
• Changing the purchase option

Modification vs. Reassessment

Important distinction:

• Modification: A change in scope or consideration (deliberate renegotiation)
• Reassessment: A change in facts requiring you to update estimates (e.g., you now believe you'll exercise an extension option)

Step 1: Is It a Separate New Lease?

Not all modifications are treated the same. IFRS 16.44— 45 says if the modification is a "separate lease," account for it separately. A separate lease exists when:

• The modification adds an asset, AND
• The lessee's right to use that asset is separately identifiable, AND
• The price of that lease is commensurate with its standalone price

Example 1 (Separate lease): A retail company leases a building. The lessor offers to add a rooftop advertising space (identifiable, separately priced at £50k/year). The company treats the original lease as modified (building rent increases), and the advertising space as a new, separate lease.

Example 2 (Not separate, single modification): A company leases equipment. Midway through, it requests to add more equipment at the same rate per unit. This is not separately identifiable at a standalone price, so it's a modification to the original lease, not a new lease.

Scope Changes: Adding or Removing an Asset

Adding an Asset (Increase in Scope)

If the modification increases the scope and is not a separate lease, remeasure the lease:

• Calculate the new lease liability (PV of all remaining payments + new payments for the added asset)
• Calculate the increase in ROU asset
• Journal entry: Dr ROU Asset / Cr Lease Liability

Worked Example: Adding Parking Spaces
On 1 Jan 2026, a company leases an office building for £200k/year, 10-year term, IBR 5%.
On 1 July 2026 (mid-year), the lessor agrees to add 10 parking spaces at £10k/year.

Modification treatment:
— The parking spaces are not separately identifiable (bundled with building)
— Recalculate lease liability: remaining building payments + parking payments
— New lease liability = £1,680,000 (original balance: £1,550,000)
— Increase = £130,000
— ROU asset increases by £130,000

Journal entry:
Dr ROU Asset £130,000 / Cr Lease Liability £130,000

Removing an Asset (Decrease in Scope)

If the modification decreases the scope, reduce the lease liability and ROU asset. The difference hits P&L as a gain or loss.

Example: Early Lease Termination (Partial)
Company leases a 3-floor office building. On 1 July 2026, it surrenders the top floor early. Remaining payments reduce by £60k/year (3 years remaining).

— Old lease liability: £180k
— New lease liability (2 floors only): £120k
— Reduction: £60k (gain, hits P&L)

Journal entry:
Dr Lease Liability £60,000 / Cr Gain on Modification £60,000

Payment Changes: Increase or Decrease

Payment Increase (Fixed or Inflation-Linked)

If the modification increases lease payments (e.g., rent goes from £100k to £110k/year), remeasure the lease:

• Recalculate the lease liability with the new payment amount
• The difference adjusts the ROU asset

Example: Mid-Lease Rent Increase
Building lease at £500k/year, 10 years remaining, IBR 4%.
Lessor offers: "Reduce your rent to £480k/year for the next 5 years if you renew for 10 additional years post-lease."

This is a modification because the original lease didn't include the renewal at that price.

— Old remaining liability: £4.1m
— New liability (5 years at £480k + 10 years at original rate): £4.3m
— Increase: £200k

Journal entry:
Dr ROU Asset £200,000 / Cr Lease Liability £200,000

Reassessments: When to Remeasure (vs. Modify)

These are not modifications but require remeasurement:

1. Change in Lease Term Assessment

You initially didn't include an extension option (thought you wouldn't exercise it). Later, you determine you will exercise it. Reassess and remeasure.

Example: 5-year office lease with a 3-year renewal option at market rate. At inception, you thought: "Probably won't renew." Now (in year 3), your business is thriving and you're certain you'll renew. Reassess the lease term to 8 years, remeasure the liability, and adjust the ROU asset.

2. Change in Termination Option Assessment

You originally included a termination option in the lease term because you thought you'd exercise it. Now you're certain you won't. Remove it from the term and remeasure.

3. Change in Residual Value Guarantee

Your estimate of the residual value you'll guarantee changes (e.g., market value of equipment drops). Update the lease liability if this affects the payment amount.

Journal Entries for Modifications

Template 1: Increase in Scope

Template 2: Decrease in Scope

Template 3: Payment Increase with Same Term

Worked Example: Complex Multi-Step Modification

Scenario

Original lease (1 Jan 2025):
— Annual rent: £300k
— Lease term: 10 years
— IBR: 5%
— ROU asset at inception: £2,318k
— Lease liability at inception: £2,318k

As of 1 Jan 2026 (1 year in):
— ROU asset (net of depreciation): £2,094k
— Lease liability (after 1 payment): £1,990k

Modification (1 Jan 2026):
— Lessor and lessee agree:
— Rent increases to £330k/year (3% increase)
— Lease term extended by 2 years (now 11 years remaining)
— Company to add parking (identifiable, £25k/year)

Step 1: Identify the Lease(s)

This is a single modification of the original lease (parking is bundled, not separate; rent increase applies to original asset).

Step 2: Calculate New Lease Liability

Remaining 11 years:

• Building rent: £330k × 11 years = £3,630k (undiscounted)
• Parking: £25k × 11 years = £275k (undiscounted)
• Total: £3,905k

Discounted at 5% over 11 years ≈ £3,020k

Step 3: Calculate Change in Liability

• Old liability: £1,990k
• New liability: £3,020k
• Increase: £1,030k

Step 4: Journal Entry

Step 5: Going Forward

Year 2 (2026) expense:

• ROU depreciation: (£2,094k + £1,030k) ÷ 11 years = £281k
• Interest expense: £3,020k × 5% = £151k
• Total lease expense: £432k

What Auditors Focus On

1. Was It a Modification?

Auditors ask: "How did you identify this as a modification vs. a reassessment?" Document your reasoning. Review the lease agreement and the change letter. Be clear.

2. Was the Calculation Correct?

Auditors recalculate the new lease liability and verify the adjustment. Common errors:

• Forgetting to include certain payments (parking, residual value changes)
• Using the wrong IBR (should be the original IBR, not the current IBR at modification date)
• Miscounting the remaining lease term

3. Was the ROU Asset Adjusted Appropriately?

If the modification increases the liability, the ROU asset increases by the same amount (not a gain). If the liability decreases, the reduction could be partly a gain. Auditors verify the split.

FAQs

Real-Life Case Study: Renegotiating Space Mid-Lease