Core ARO Calculations, Explained in Plain English

Understand How Your Asset Retirement Obligations Are Calculated

VIZIO ARO breaks complex ARO math into clear, traceable steps. Below, you can see exactly how we handle the core calculations auditors care about most without spreadsheets or black boxes.

Built for ASC 410-20 and audit readiness

Every obligation, rate, and schedule is fully documented.

Transparent schedules, no black boxes

Your team can review and export every calculation.

Enterprise-grade platform on AWS

Security, performance, and availability you can trust.

The Six Core ARO Measurement Calculations

These are the building blocks of every Asset Retirement Obligation. Each one is automated, documented, and visible to your finance team and auditors.

Initial ARO Liability Measurement

We calculate the present value of your expected retirement cash flows using a documented discount rate, aligned with ASC 410-20.

In practice

You enter the expected decommissioning costs and timing; the system applies the chosen rate and shows the present value.

In VIZIO ARO

The inputs, rate, and resulting liability are stored with each obligation so you and your auditors can see how the number was derived.

Asset Retirement Cost (ARC) Capitalization

The ARO liability amount is capitalized as part of the related asset cost so it can be depreciated over the asset's life.

In practice

You see the ARC value attached to the asset, not buried in a spreadsheet formula.

In VIZIO ARO

The platform posts the correct initial journal entry (Dr ARC / Cr ARO Liability) and ties it to the asset record.

Accretion Expense Schedule

As time passes, the ARO liability grows with interest (accretion) so it reaches the full expected cost by settlement.

In practice

You get a period-by-period schedule showing accretion expense and updated liability balances.

In VIZIO ARO

For each cost layer, the system generates an accretion schedule that can be reviewed, exported, and posted to your general ledger.

Depreciation of the ARC

The capitalized retirement cost (ARC) is depreciated over the asset's useful life, alongside other asset costs.

In practice

Finance sees ARC depreciation by period without maintaining separate offline models.

In VIZIO ARO

Depreciation follows your configured useful life and method, and the ARC's net book value is updated automatically.

ARO Liability Rollforward

We show how the liability moves from opening to closing balance: additions, accretion, settlements, and changes in estimate.

In practice

One report tells the full story for management and auditors—no need to reconcile multiple spreadsheets.

In VIZIO ARO

Rollforward reports are generated from actual cost layers and postings, so balances always tie out.

ARC Net Book Value Tracking

We track the remaining ARC on your books after depreciation and any changes in estimate.

In practice

You can see the ARC's net book value at any period end, ready to feed fixed asset and disclosure reporting.

In VIZIO ARO

NBV is updated whenever schedules run, estimates change, or terminations occur, with a full audit trail.

Cost Layers & Change-in-Estimate Calculations

Real AROs rarely stay flat. VIZIO ARO lets you add new cost layers, adjust estimates, and correct mistakes while keeping a clear audit trail of how and why each obligation changed.

New cost layer – initial estimate

First estimate of retirement cost for a new obligation (for example, a well, facility, or asset group).

Increase in estimate (upward revision)

Additional cost layer that increases the total expected retirement cost while preserving the original history.

Decrease in estimate (downward revision)

An adjustment that reduces expected retirement cost, with full visibility into before/after values.

Change in timing of retirement

Re-estimation when useful life is extended or shortened, updating cash flow timing and discounting.

Mass Adjust (bulk change in estimates)

Bulk update of amounts, dates, or other fields across multiple obligations or cost layers in one step.

Reversal of incorrect cost layer

Neutralizes the financial impact of an erroneous layer while keeping an audit trail of what changed and why.

Settlement & Termination Calculations

When obligations are settled or terminated, you need to know exactly how the liability, cash flows, and any gain or loss are calculated. The platform walks you through each step.

Full settlement of an obligation

Recording the difference between actual decommissioning costs and the carrying amount of the ARO liability.

Partial settlement

Settling only part of an obligation (for example, some wells in a field) while other cost layers remain active.

Termination with minimal or zero cost

Handling cases where the obligation is closed but no material cash outflow occurs at settlement.

Gain / loss on settlement

Calculating and posting gains or losses when actual settlement differs from the recorded liability.

Terminate cost layer vs terminate obligation

Distinguishing between closing an individual layer and closing all layers for an obligation.

Mass terminate / mass reverse

Bulk termination or reversal of obligations and cost layers with consistent financial treatment.

Posting & Journal Entry Calculations

Behind every schedule is a set of journal entries. VIZIO ARO shows which postings are created, how they are calculated, and how they flow into your general ledger.

Initial recognition journal entry

Dr Asset Retirement Cost / Cr ARO Liability when the obligation is first recognized.

Periodic accretion postings

Dr Accretion Expense / Cr ARO Liability based on the scheduled accretion amounts.

ARC depreciation postings

Dr Depreciation Expense / Cr Accumulated Depreciation for the ARC portion of the asset.

Change-in-estimate postings

Entries required when cost estimates or timing change, so the books stay aligned with updated assumptions.

Retrospective adjustment postings

Adjustments that impact prior periods, with clear flags and documentation for auditors.

Reversal of erroneous postings

System-driven reversals that fully offset incorrect entries while keeping the original record for audit.

What This Means for Finance & Audit

Controllers, FP&A, and auditors all want the same thing: clear, defensible numbers. VIZIO ARO shows exactly how each obligation was measured, updated, and settledwith schedules you can export and review together.

  • No hidden overrides: inputs, discount rates, and methods are visible.
  • Audit-ready rollforwards: liability changes are traceable back to cost layers and postings.
  • Exportable support: schedules and disclosure tables can be downloaded as Excel or PDF.

Walk Through Your Own AROs

Share a simple export of your current AROs, and well map them into these calculations so your team can see the impact before you commit to anything.