How does construction contract revenue recognition differ between the CPA (US GAAP) and CFA (IFRS) perspectives?

Question

AcadiFi · Accepted Answer

Both IFRS 15 and ASC 606 converged significantly on construction contract accounting, but subtle differences remain that matter for cross-border financial analysis.

**Core Agreement (Both Frameworks):**
Construction contracts typically satisfy the "over time" criteria because the customer controls the asset as it's built (e.g., on the customer's land). Revenue is recognized using either:
- **Input method**: Costs incurred / total estimated costs (cost-to-cost)
- **Output method**: Surveys of work completed, milestones, units delivered

**Key Differences:**

| Issue | IFRS 15 | ASC 606 (US GAAP) |
|---|---|---|
| Combining contracts | Based on single commercial objective | Similar criteria, slightly different wording |
| Variable consideration threshold | "Highly probable" no significant reversal | "Probable" no significant reversal (lower bar) |
| Contract modifications | Prospective or cumulative catch-up | Similar but more prescriptive guidance |
| Loss contracts | Onerous contract provision under IAS 37 (full contract losses) | ASC 606 -- recognize loss on the performance obligation level |
| Capitalized contract costs | Amortize over transfer period; impairment testing | Similar, but practical expedient if amortization < 1 year |

**Worked Example -- Terraform Builders (fictional)**

Terraform has a $50M highway contract with a $5M incentive bonus for early completion. Costs incurred to date: $18M of estimated $40M total.

| Framework | Bonus Included in Revenue? | Revenue Recognized |
|---|---|---|
| IFRS 15 (highly probable) | No -- too uncertain at 45% completion | $50M × (18/40) = $22.5M |
| US GAAP (probable) | Yes -- management estimates 75% likely | $55M × (18/40) = $24.75M |
| **Difference** | | **$2.25M higher under US GAAP** |

For financial analysts comparing a US-listed and IFRS-listed construction firm, the variable consideration threshold alone can create a 5-10% revenue difference in early contract stages. The IFRS entity looks more conservative initially but catches up as uncertainty resolves.

When analyzing loss-making contracts, the IFRS approach (IAS 37 onerous contract) may front-load larger loss provisions than the US GAAP performance-obligation-level approach, depressing near-term earnings but providing a cleaner future margin profile.

How does construction contract revenue recognition differ between the CPA (US GAAP) and CFA (IFRS) perspectives?

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