Are They Really Identical?
No. On recognition and initial measurement they agree almost completely, which is why the two are often described as converged. That description does not survive contact with the income statement.
The real differences, in order of how much they move the numbers:
- Lessee classification. ASC 842 retains the operating and finance lease split for lessees. IFRS 16 does not. An ASC 842 operating lease produces a single straight-line lease cost sitting in operating expenses; an IFRS 16 lease always produces depreciation plus interest, front-loaded, with the interest below EBITDA. Same lease, same balance sheet, different profit profile and different EBITDA.
- Index-linked payments. IFRS 16 remeasures the lease liability when an index or rate changes the cash flows. ASC 842 does not; the incremental amount is a variable lease cost in the period incurred.
- Low-value exemption. IFRS 16 has one. ASC 842 has none at all.
- Restoration and dismantling. IFRS 16 puts these in the right-of-use asset. US GAAP accounts for them separately as an asset retirement obligation under ASC 410-20.
- Lessor classification. IFRS 16 uses risks and rewards with non-quantified indicators. ASC 842 applies five specified criteria including quantified thresholds, and splits finance leases into sales-type and direct financing.
Reference: IFRS 16.22 to .46; ASC 842-20-25-1 to 25-6 and 842-20-30-5.
Lessee Basics: ROU Asset and Liability
Both standards require the same starting point:
| Item | IFRS 16 | ASC 842 |
|---|---|---|
| ROU Asset (initial) | Liability + prepayments + initial direct costs + restoration, less incentives | Liability + prepayments + initial direct costs, less incentives. Restoration handled separately under ASC 410-20 |
| Lease Liability (initial) | PV of unpaid lease payments at commencement | PV of unpaid lease payments at commencement |
| Discount Rate | Implicit rate if readily determinable, otherwise the IBR | Same. Non-public entities may also elect a risk-free rate by class of underlying asset |
| Lessee classification | None. Single model for all leases | Finance or operating, tested against five criteria |
| Income statement | Depreciation (straight-line, or the pattern of benefit) plus interest. Front-loaded | Finance lease: as IFRS 16. Operating lease: a single straight-line lease cost, with asset amortisation as the balancing figure after imputed interest |
That last row is the whole story. Everything above it is common ground.
ROU Asset Measurement: Where They Agree
This is frequently written up as the first big difference between the two standards. It is not a difference at all, and it is worth being precise about because the claim circulates widely.
IFRS 16.24 requires:
ASC 842-20-30-5 requires:
Same build-up. Initial direct costs are required under both, not optional, and they are added, never deducted. There is no practical expedient permitting a US filer to measure the asset at the liability amount, and ASC 842-20-30-1, sometimes cited for this, is the liability measurement paragraph.
The one genuine difference is restoration. IFRS 16.24(d) brings dismantling and restoration costs into the right-of-use asset, with the corresponding provision under IAS 37. US GAAP keeps them outside the lease entirely: the obligation is an asset retirement obligation under ASC 410-20, with its own asset recognised separately. The total capitalised is similar; the line it sits on, and the standard that governs its subsequent measurement, is not.
Reference: IFRS 16.24; ASC 842-20-30-5; ASC 842-10-30-9 to 30-10 (initial direct costs); ASC 410-20.
Worked Example: ROU Asset Calculation
Scenario: Office Lease with Setup Costs
Lease terms:
- 5-year office lease
- Annual payment: £100,000, paid at year-end
- Discount rate (IBR): 5%
- Initial direct costs (fitout, legal): £10,000
- Estimated restoration cost (at lease end): £5,000 (PV = £3,916 at 5%)
- Lease incentive received: £20,000 (rent-free month)
Step 1: Calculate Lease Liability (identical under both standards)
| Year | Payment | Discount Factor | PV |
|---|---|---|---|
| 1 | £100,000 | 0.9524 | £95,240 |
| 2 | £100,000 | 0.9070 | £90,700 |
| 3 | £100,000 | 0.8638 | £86,380 |
| 4 | £100,000 | 0.8227 | £82,270 |
| 5 | £100,000 | 0.7835 | £78,350 |
| Total Lease Liability | £432,940 | ||
Step 2: Calculate ROU Asset
IFRS 16:
- Lease liability: £432,940
- Initial direct costs: +£10,000
- Restoration obligation (PV): +£3,916
- Lease incentive: −£20,000
- ROU Asset = £426,856
ASC 842:
- Lease liability: £432,940
- Initial direct costs: +£10,000 (required, not optional)
- Restoration obligation: excluded, recognised separately under ASC 410-20
- Lease incentive: −£20,000
- ROU Asset = £422,940
The £3,916 gap is the restoration provision, and it has not disappeared under US GAAP. It sits in a separate asset retirement obligation asset alongside the lease, accreting to £5,000 by lease end. The capitalised total is the same, split across two line items instead of one.
Now the part that actually matters. Assume the ASC 842 lease is classified as an operating lease.
| Year 1 charge | IFRS 16 | ASC 842 operating lease |
|---|---|---|
| Depreciation / amortisation | £85,371 | No separate line |
| Interest on lease liability | £21,647 | No separate line |
| Single lease cost | None | £98,000 |
| Total in profit or loss | £107,018 | £98,000 |
| Of which above EBITDA | Nil | £98,000 |
Year 1 profit is roughly £9,000 lower under IFRS on a single office lease, and EBITDA is £98,000 higher. Scale that across a property portfolio and it is the reason lease-heavy retailers report very different multiples depending on which framework they file under.
Over the full term the totals converge. Lifetime cost is £495,000 under both: £490,000 of net lease payments and initial direct costs, plus £5,000 of restoration. IFRS gets there through front-loaded depreciation and interest; ASC 842 gets there through a flat £98,000 a year. Nothing is lost, it is purely timing and geography. But timing and geography are what covenant tests and EBITDA multiples are built on.
Reference: IFRS 16 paragraph 24; ASC 842-20-30-1.
Initial Direct Costs
IFRS 16: Capitalise incremental costs of obtaining the lease, meaning costs that would not have been incurred had the lease not been obtained. Broker commissions qualify. Add to the ROU asset.
ASC 842: The same definition and the same treatment. Both standards narrowed this from the legacy position, so internal legal costs, negotiation time and general overheads that would have been incurred anyway are expensed under both.
Audit implication: the question is the same on both sides of the Atlantic. Is the population capitalised complete, and does each item pass the incremental test? Expect challenge on internal costs that have been swept in.
Restoration and Dismantling Costs
This is a real difference and it is easy to get wrong in both directions.
IFRS 16: the estimated dismantling and restoration cost goes into the ROU asset under IFRS 16.24(d), with the corresponding provision recognised under IAS 37 and unwound as a finance cost.
ASC 842: it does not enter the lease at all. The obligation is an asset retirement obligation under ASC 410-20, with its own capitalised asset and its own accretion expense.
Audit implication: IFRS auditors challenge: Have you considered restoration obligations? ASC auditors are less aggressive.
Reassessment: When Does the Liability Change?
Both standards require you to remeasure the liability if estimates change. But the triggers differ:
IFRS 16
- Change in the assessment of a lease term or a purchase option. Revised discount rate (IFRS 16.40, .41)
- Change in amounts expected under a residual value guarantee. Unchanged rate (IFRS 16.42(a), .43)
- Change in future payments from a change in an index or rate. Unchanged rate (IFRS 16.42(b), .43)
- Change in floating interest rate payments. Revised rate (IFRS 16.43)
- Lease modification. Separate assessment under IFRS 16.44 to .46
ASC 842
- Change in the assessment of a lease term or a purchase option. Revised discount rate (ASC 842-20-35-5)
- Change in amounts probable of being owed under a residual value guarantee. Unchanged rate
- Change in an index or rate: no remeasurement. The incremental payment is a variable lease cost in the period incurred (ASC 842-10-35-4, 35-5)
- Lease modification. Separate assessment
The genuine difference is index-linked payments, and it runs the opposite way to how it is usually described. IFRS 16 remeasures the liability when a CPI uplift changes the cash flows. ASC 842 leaves the liability alone and takes the increment straight to expense. Over a twenty-year indexed property lease that compounds into a materially different carrying amount.
Note also that ASC 842 does update the discount rate on a term or purchase option reassessment. The claim that US GAAP locks the rate at commencement for all purposes is wrong.
Worked Example: Lease Reassessment
Scenario: CPI-Linked Lease Payments
Original lease (Jan 2026): 5-year property lease, £100,000 a year in arrears, uplifted annually by CPI. IBR at commencement 5%. The liability at commencement uses the payments as they stand at that date, so £100,000 a year, giving £432,940.
January 2027: CPI comes in at 3%, so the Year 2 payment becomes £103,000 and subsequent payments step up from there.
IFRS 16:
- Remeasure the liability for the revised payments (£103,000 and the uplifted stream that follows)
- Use the original 5% rate. IFRS 16.43 requires an unchanged discount rate for an index-driven change
- The increase is added to the right-of-use asset. Nothing goes to profit or loss on the remeasurement itself, and nothing goes to equity
ASC 842:
- No remeasurement. The liability continues on the original schedule at 5%
- The £3,000 of extra cash paid in Year 2 is recognised as variable lease cost in Year 2
- The liability is only revisited if something else triggers it, such as a change in the lease term assessment or a modification
Outcome: after the first uplift the IFRS liability and right-of-use asset are higher than the US GAAP equivalents, and the gap widens with each subsequent uplift. US GAAP shows a smoother balance sheet and a lumpier expense. This is the single most common source of reconciling items on an indexed property portfolio in a dual-reporting group.
Reference: IFRS 16.39 to .43; ASC 842-10-35-4 and 35-5; ASC 842-20-35-5.
Recognition Exemptions (Short-Term and Low-Value)
This is where the two standards genuinely part company, and getting it wrong has a direct balance sheet consequence.
Short-term leases. Both standards have this. A lease of 12 months or less at commencement, with no purchase option the lessee is reasonably certain to exercise. Under both, the election is made by class of underlying asset, and the payments are recognised on a straight-line basis over the term.
Low-value leases. IFRS 16 only. IFRS 16.5(b) lets a lessee elect not to apply the recognition requirements to a lease of a low-value asset. Two conditions in IFRS 16.B4 have to hold: the lessee can benefit from the asset on its own or with resources readily available, and the asset is not highly dependent on or interrelated with other assets. The election is made lease by lease, not by class, which is the opposite basis to the short-term election. IFRS 16.B3 assesses value when the asset is new, regardless of the age of the asset actually leased, and IFRS 16.B5 says a car does not qualify however cheap it is.
On the USD 5,000 figure itself: it is not in IFRS 16 either. It appears once, in IFRS 16.BC100, recording that the Board had in mind assets with a value when new in the order of USD 5,000. It is a Basis for Conclusions observation, not a threshold, and an entity that applies it as a hard cut-off without the IFRS 16.B4 conditions will get challenged on it.
Reference: IFRS 16.5 to .8, B3 to B8, BC100; ASC 842-20-25-2; ASU 2016-02 Basis for Conclusions BC122 to BC124.
Lessor Differences
Lessor accounting was largely carried forward unchanged by both boards, which means it carried forward the differences that already existed between IAS 17 and the old US model.
- Classification. IFRS 16.62 and .63 use a risks and rewards assessment supported by non-quantified indicators, so the analysis is a judgement in the round. ASC 842-10-25-2 applies five specified criteria, two of which are quantified in practice: the lease term covering a major part of the remaining economic life, and the present value of payments amounting to substantially all of the fair value. The bright lines make ASC 842 more mechanical and more predictable, and occasionally produce a different answer on the same facts.
- Finance lease sub-classification. IFRS 16 has one category. ASC 842 splits lessor finance leases into sales-type and direct financing, which affects whether selling profit is recognised at commencement or deferred.
- Operating lease income. No difference. IFRS 16.81 and ASC 842-30-25-11 both require straight-line recognition, or another systematic basis if that better represents the pattern of benefit. Neither permits acceleration because the contract contains escalations, which is the point of straight-lining in the first place.
For a group that both leases in and leases out, these rarely net off in any meaningful way, because the lessee differences sit in the income statement and the lessor differences sit in classification. For leasing companies and dealer-lessors, the sales-type versus direct financing split is the one to model.
Audit Red Flags and Implications
For auditors:
- Initial ROU asset: Verify all components are included (IFRS) or correctly omitted (ASC). Check initial direct costs and restoration obligations.
- Discount rate: Challenge the IBR build-up. Verify it is lease-specific, not a blanket group rate.
- Lease term: Assess extension and termination options. Are they reasonably certain? Both standards use the same threshold here, so a difference in answer between frameworks points to a difference in judgement, not in the rules.
- Reassessment: Ensure management has reassessed when CPI, lease terms, or other estimates changed. IFRS may have more reassessments than ASC.
- Short-term and low-value: Challenge the classification. Is that 13-month lease really not short-term? Is that £8k piece of equipment really not low-value?
For controllers and CFOs:
- Document the lease term assessment (extensions, terminations, purchase options). This drives the liability — getting it wrong overstates or understates assets and liabilities.
- Maintain an IBR schedule for different lease types (property, vehicles, equipment). Auditors will ask to see it.
- If you are IFRS, include initial direct costs and restoration costs. If ASC, you can omit them, but consistency matters.
- Reassess leases annually, especially for CPI revisions. Document the change and the impact on the liability.
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Talk to an Expert →Frequently Asked Questions
Are IFRS 16 and ASC 842 identical?
No. They agree on recognition and initial measurement of the right-of-use asset and lease liability, but ASC 842 retains the operating and finance lease classification for lessees and IFRS 16 abolished it. An ASC 842 operating lease produces a single straight-line lease cost within operating expenses, whereas IFRS 16 always produces depreciation plus interest, front-loading the charge and moving interest below EBITDA. IFRS 16 also has a low-value exemption, which ASC 842 does not, and IFRS 16 remeasures the lease liability for index-linked payment changes, which ASC 842 does not.
What is the main difference between IFRS 16 and ASC 842 ROU asset measurement?
There is no difference in the build-up, contrary to a claim that circulates widely. IFRS 16.24 and ASC 842-20-30-5 both measure the right-of-use asset as the lease liability plus payments made at or before commencement plus initial direct costs, less lease incentives received. Initial direct costs are required under both and are added, not deducted. There is no ASC 842 practical expedient permitting measurement at the lease liability amount. The one genuine difference is restoration and dismantling costs, which IFRS 16.24(d) includes in the right-of-use asset while US GAAP recognises them separately as an asset retirement obligation under ASC 410-20.
How do reassessment requirements differ?
The important difference is index-linked payments. IFRS 16.42(b) requires the lessee to remeasure the lease liability when a change in an index or rate changes the cash flows, using the unchanged original discount rate. ASC 842-10-35-4 does not remeasure for an index change at all; the incremental amount is recognised as variable lease cost in the period incurred. Both standards revise the discount rate on a change in the lease term or purchase option assessment, so it is not correct to say ASC 842 locks the rate at commencement. IFRS 16 has no reassessment trigger for the implicit rate becoming determinable after commencement.
Can IFRS 16 and ASC 842 produce different balance sheet totals for the same lease?
Yes, and increasingly so over time. After the first index-driven uplift the IFRS 16 lease liability and right-of-use asset are higher than the US GAAP equivalents, because IFRS remeasures and ASC 842 does not, and the gap widens with each subsequent uplift. Lifetime cost is the same under both, but the annual charge and its position relative to EBITDA differ throughout, and on an ASC 842 operating lease there is no separate depreciation or interest line at all.
About the author — Usman Qureshi (ACCA)
Usman Qureshi is a Chartered Certified Accountant (ACCA) working in audit and advisory. He writes on IFRS 16 and ASC 842 lease accounting.
This guide is simplified for educational purposes and does not constitute professional accounting advice. Actual IFRS 16 vs ASC 842 assessments depend on specific lease facts and judgments. Auditors and preparers should consult the full text of IFRS 16 and ASC 842, and their own professional advisors, before finalising lease accounting treatment. The article reflects IFRS Accounting Standards and US GAAP effective as of July 2026.
Real-Life Case Study: One Lease, Two Standards
Scenario. A US-parented group leases equipment and must report under both IFRS 16 and ASC 842.
The key difference. IFRS 16 uses a single model, every lease is finance-like, giving front-loaded depreciation-plus-interest. ASC 842 keeps a dual model: a "finance lease" behaves like IFRS 16, but an "operating lease" produces a single, straight-line expense even though the ROU asset and liability are still on balance sheet. So EBITDA and expense profile differ for the same operating lease.
Takeaway. Both standards put leases on the balance sheet, but ASC 842's surviving operating-lease category means the income statement geography differs. Reconcile the P&L profile, not just the balance sheet, when bridging the two.
Illustrative composite scenario for educational purposes. Figures are indicative and do not represent any specific company.