ASC 410-20 Asset Retirement Obligations: Initial Recognition, Accretion, Revisions and Settlement Entries

Scope and recognition of AROs are covered in our ASC 410-20 standards page. This article does the arithmetic. It follows one obligation from day one through settlement, with an entry at each step, then lists the audit tests. The numbers are round and illustrative, not taken from any entity.

What is the initial entry?

The entity records a liability at fair value when the obligation is incurred, and adds the same amount to the carrying amount of the related long-lived asset. Fair value is an expected present value: estimate the timing and amount of the retirement cash flows, then discount them at a credit-adjusted risk-free rate. AccountingTools describes the steps in this order and states that the retirement cost is added to the carrying amount of the related fixed asset.

Illustration only. A company installs equipment on January 1, Year 1 and is legally required to remove it in 10 years. Estimated cash cost of removal at that date is $1,000,000. The credit-adjusted risk-free rate is 6%. Present value is $1,000,000 divided by 1.06 to the tenth power, or $558,395.

The asset retirement cost is then depreciated over the asset's useful life. On a straight-line basis over 10 years, that adds about $55,840 a year to depreciation.

How does accretion work?

The liability grows each year through accretion expense. AccountingTools states that any period-to-period increase in the liability is recognized as accretion expense. Each layer accretes at the credit-adjusted risk-free rate used when that layer was first measured.

Year 1 accretion is $558,395 times 6%, or $33,504. The year-end liability is $591,899.

At the end of Year 3, the liability has accreted to $665,057 if nothing else changes. By Year 10 it reaches $1,000,000.

When the estimate changes, which rate applies?

Revisions to the timing or amount of cash flows are treated by layers. AccountingTools states that an upward revision is a new liability layer discounted at the current credit-adjusted risk-free rate. A downward revision reduces an existing layer and is discounted at the rate used when that layer was first recognized. If a downward revision cannot be matched to a layer, a weighted-average credit-adjusted risk-free rate is used.

Illustration only. At the end of Year 3, new regulation raises the expected removal cost by $200,000 in Year 10 dollars. The credit-adjusted risk-free rate is now 8%, and seven years remain. Present value of the increase is $200,000 divided by 1.08 to the seventh power, or $116,698.

The new layer accretes at 8% from then on. The original layer keeps accreting at 6%. The added asset retirement cost is depreciated over the remaining life of the asset. By Year 10 the two layers total $1,200,000.

The revision is a layer-by-layer calculation. Restating the whole liability at the current rate misstates accretion.

How is the obligation settled?

When the work is done, the liability is derecognized. The entity derecognizes the ARO when the asset is retired or the remediation occurs. PwC and EY both note that when an entity settles the ARO with its own resources, a gain is typically recognized, because the original fair value reflects a third-party profit margin and a market risk premium. A settlement for less than the carrying amount produces a gain, and one for more produces a loss.

Illustration only. At the end of Year 10 the liability is $1,200,000. The company completes the removal for $1,150,000 in cash.

Audit angle

AROs are estimates built on legal obligations, so the audit starts with completeness. See auditing accounting estimates.

• Completeness. Read leases for restoration clauses, permits, environmental reports and contracts. Compare the list of obligations to the ARO roll-forward. A tenant with specialized build-outs and no ARO needs an explanation.
• Estimate. Compare the cash flow estimate to vendor quotes, prior removal costs and engineering reports. Test the inflation and probability assumptions.
• Rate and layers. Obtain the layer schedule. Check that each layer uses the rate in effect at its measurement date, that upward revisions use the current rate and that downward revisions use the original rate.
• Roll-forward. Agree opening balance, accretion, revisions, settlements and closing balance. Recompute accretion by layer.
• Asset side. Agree the asset retirement cost to the liability and recompute its depreciation. See PP&E accounting.
• Settlements. Examine invoices and recompute the gain or loss.

Common misstatements: no ARO recorded for lease restoration, accretion booked at the current rate on old layers and revisions booked entirely through expense.

CORAA prepares ready-to-review audit files for US CPA firms from QuickBooks books; you review and sign. See /us.

Sources

• PwC, Property, plant and equipment guide, 3.5 Retirement AROs: https://viewpoint.pwc.com/dt/us/en/pwc/accounting_guides/property_plant_equip/property_plant_equip_US/Chapter_3_Asset_retirement_obligations/3_5_Retirement_AROs.html
• AccountingTools, Asset retirement obligation: https://accountingtools.com/articles/asset-retirement-obligation
• EY, Financial reporting developments: Asset retirement obligations (layers, revisions at current or original credit-adjusted risk-free rate, gain on settlement): https://www.ey.com/content/dam/ey-unified-site/ey-com/en-us/technical/accountinglink/documents/ey-frdbb1026-08-11-2026.pdf

AU-C references are to AICPA Professional Standards, paraphrased here; read the standard itself before relying on a requirement. This page is guidance, not professional advice. Report an error