Right-of-Use Assets: How RE-FX and Asset Accounting Work Together

Under ASC 842 and IFRS 16, almost every lease a company signs as a lessee ends up on the balance sheet as a right-of-use (ROU) asset and a lease liability. In SAP, the lease contract itself and its valuation live in Flexible Real Estate Management (RE-FX). The ROU asset, however, is typically carried in Asset Accounting (FI-AA).

That split is deliberate. RE-FX knows the contract: term, payments, options, and conditions. FI-AA knows how to carry, depreciate, and report fixed assets. Understanding where one ends and the other begins is the key to a clean lessee setup – and to an audit trail that holds up under SOX.

Who Does What

RE-FX is responsible for the contract and its valuation:

• lease contract, terms, and conditions,

• the valuation rule that defines how the contract is measured,

• present value calculation of the lease liability,

• interest on the liability and payment flows,

• triggering the postings that create and change the ROU asset.

FI-AA is responsible for the asset:

• a dedicated subledger asset for the ROU asset,

• acquisition and production cost (APC) as delivered by RE-FX,

• periodic depreciation,

• asset history, asset reporting, and the asset roll-forward for disclosures.

RE-FX also offers an alternative: direct balance sheet postings, where ROU creation and depreciation go straight to a designated G/L account without a subledger asset. Most companies with material lease portfolios prefer full integration with Asset Accounting, because it gives them the standard asset reports and a consistent fixed-asset roll-forward.

The Valuation Rule: Where Accounting Policy Meets Configuration

The central object in RE-FX is the valuation rule. It is configured under Balance-Sheet Valuation of Contracts and assigned to a company code and contract type. Each rule follows a valuation type – for ROU accounting, this is balance-sheet capitalization, which creates the ROU asset and the lease liability.

The rule's classification determines how the ROU asset is depreciated. Relevant options include:

• ROU approach with linear depreciation – the typical model for IFRS 16 and for ASC 842 finance leases.

• Straight-line lease – depreciation is derived as the linearized commitment minus interest. This reflects the ASC 842 operating lease model, where the lessee reports a single, straight-line lease cost.

Because ASC 842 uses a dual lessee model and IFRS 16 a single model, the same contract can need different valuation rules per accounting principle. Groups reporting under US GAAP and IFRS should define their valuation rules per principle from the start, rather than trying to derive one view from the other later.

How the Postings Reach FI-AA

The integration is controlled through a few configuration elements:

• Asset class: A dedicated asset class for lease ROU assets is recommended. It keeps ROU assets separate from owned property, plant, and equipment in reporting and account determination.

• Depreciation areas: The valuation rule is linked to the depreciation area that belongs to the relevant accounting principle – for example, an IFRS area. With parallel valuation, each principle gets its own area.

• Flow types: These keys control the automatic postings. Separate flow types are needed for acquisition (asset acquisitions and retirements in FI-AA), depreciation, payment, and interest.

• Asset transaction types: They are mapped to flow types – acquisition, depreciation on current- and prior-year acquisitions, retirement, and reactivation.

• Account symbols: Flow types lead to posting records with account symbols, which are then linked to G/L accounts.

The result: RE-FX calculates, FI-AA carries. The ROU asset's APC comes from the RE-FX valuation, and depreciation runs through FI-AA.

Contract Changes and Remeasurement

Leases change. Rents are indexed, terms are extended, options are exercised, space is returned. Each change can require a remeasurement of the lease liability and an adjustment of the ROU asset.

In RE-FX, these changes are processed as delta postings against the existing valuation. Customizing defines reference flow types for these deltas. If a contract ends or conditions change after all periods have been posted, the remaining value is posted as a one-time adjustment.

For FI-AA, this means the ROU asset is not a "post once and depreciate" object. Its value moves over the lease term, and each movement should be traceable back to a contract event in RE-FX.

Common Pitfalls

• Mixing ROU and owned assets in one asset class. This complicates disclosures and account determination.

• One valuation rule for all principles. ASC 842 operating leases and IFRS 16 leases do not depreciate the same way. A single rule hides the difference instead of handling it.

• Depreciation areas not aligned with ledgers. If the RE-FX valuation rule and the FI-AA depreciation area point to different accounting principles, reconciliation breaks.

• Manual corrections in FI-AA. Adjusting a ROU asset directly in Asset Accounting breaks the link to the contract. Corrections belong in RE-FX.

• Weak reconciliation. The lease liability in RE-FX, the ROU asset in FI-AA, and the G/L balances should be reconciled regularly. Auditors will ask for it.

Where Lessor Accounting Fits

RE-FX and FI-AA cover the lessee side. Companies that also lease assets out to customers face a different set of questions: classification as operating, sales-type, or finance lease, lease income, net investment, and selling profit. At Revident, we handle lessor accounting under ASC 842 and IFRS 16 in SAP Revenue Accounting and Reporting (RAR), without an additional leasing system or license, while the leased assets themselves stay in FI-AA as long as the lease classification requires it. Operating leases are close to the RAR standard; for finance and sales-type leases, the interest and principal split requires additional customer-specific logic in RAR.

Related Articles

• ASC 842 and IFRS 16 Lease Accounting in RE-FX

• What Is SAP RE-FX? Real Estate Management in SAP Explained

• Real Estate Contracts in RE-FX: Conditions, Terms, and Periodic Posting

The Bottom Line

RE-FX and FI-AA are a division of labor: RE-FX values the contract, FI-AA carries the ROU asset. The quality of the setup depends on a few design decisions – valuation rules per accounting principle, a dedicated asset class, aligned depreciation areas, and a clear rule that changes start in the contract, not in the asset. Get those right, and lessee accounting becomes a controlled, auditable process rather than a monthly reconciliation exercise.

Setting up right-of-use asset accounting in SAP? Talk to our experts.