Common-Control Transactions, Explained: Moving Assets Between Sister Companies at Carryover Basis Under ASC 805-50

You own two companies. Company A holds a division worth far more than it paid years ago, and you want it inside Company B — cleaner org chart, better financing terms, a tidier story for a future sale. Your instinct says to record the move at today's value: get an appraisal, book the division at fair value, maybe even recognize the gain. Under U.S. GAAP, every part of that instinct is wrong. When both sides of a deal answer to the same controlling party, nothing has really changed hands in economic substance — the same owner controlled the assets before and after. So ASC 805-50 requires the receiving entity to book the transferred net assets at their existing carrying amount, recognize no goodwill, recognize no gain, and restate its prior-period financial statements as if the combination had always been in place. This guide walks through what counts as a common-control transaction, the carryover-basis rule and its equity plug, the retrospective restatement that follows, and the traps that catch small groups doing their first internal reorganization.

What Counts as a Common-Control Transaction​

A common-control transaction is a transfer of net assets or an exchange of equity interests between entities controlled by the same party. The classic shapes:

• Sister-company transfers. Parent P owns Subsidiary A and Subsidiary B. A sells a division, a subsidiary, or a bundle of assets to B.
• Dropdowns. A parent contributes a business down into a subsidiary, often ahead of a financing or a carve-out.
• Share exchanges and internal mergers. Sister companies merge, or shareholders swap shares into a newly formed holding company (a "NewCo") with no change in underlying ownership.
• Spin-offs and distributions. A parent distributes a subsidiary's shares to its owners — again with no outsider entering the picture.

The threshold question is whether common control actually exists, and it is tested under the consolidation guidance in ASC 810: does a single entity or person hold a direct or indirect controlling financial interest in both sides? Subsidiaries of one parent plainly qualify, as do a parent and its own subsidiary. But the answer is not always obvious. Two portfolio companies owned by different funds inside one private equity complex look commonly controlled on the surface — same general partner, same management company — yet under ASC 810 the general partner often lacks a controlling financial interest in each fund, in which case the companies are not under common control at all and the acquisition method applies instead. If your structure involves funds, trusts, or family members with separate holdings, nail down the control analysis before you touch the accounting, because it selects the entire rulebook.

One more scope note: ASC 805-50 covers the transaction between the entities, whatever its legal form. A downstream merger is accounted for as if the parent acquired the subsidiary's shares; a NewCo formation reflects the predecessor group's accounting with only the legal capital updated. Form does not change the answer.

The Core Rule: Carryover Basis, No Step-Up, No Goodwill​

ASC 805-50-30-5 states the measurement rule in one sentence: the entity that receives the net assets or equity interests initially measures them at the historical cost recorded by the parent of the entities under common control. Practitioners call this carryover basis, and three consequences follow:

1. No fair-value step-up. The receiving entity books the transferor's carrying amounts, not appraised value — even when an independent third party has determined fair value. PwC's business combinations guide works an example where Sister A sells Subsidiary C to Sister B for 115 million in cash, with an independent appraisal supporting exactly that price, against a book value of 100 million. Company B still records its investment at the parent's basis of 100 million. The appraisal is evidence for the deal price, not the accounting.
2. No new goodwill. Goodwill arises when an acquirer pays more than the fair value of identifiable net assets in a change of control. Here there is no change of control, so no goodwill is recognized — by definition.
3. It is the parent's basis, not necessarily the transferor's books. The standard points to the ultimate parent's carrying amounts, which matter when pushdown accounting was not applied. If Parent P acquired Subsidiary A years ago and never pushed its acquisition basis down into A's separate books, A's standalone carrying values differ from P's basis — and the receiving sister must use P's basis, not A's. Pull the parent's basis schedule before booking anything.

Why does GAAP insist on this? Because a change in legal ownership without a change in control is not an economic event for the group. Letting commonly controlled entities mark assets up to appraised values on internal transfers would let any group manufacture earnings and equity by shuffling divisions between subsidiaries. Carryover basis keeps the transaction honest: the group ends the day with exactly what it started with.

When Cash Changes Hands, the Difference Goes to Equity​

Real reorganizations involve real consideration — B pays A 115 million in cash for net assets carried at 100 million. The receiving entity cannot book the assets above carrying amount, so the 15 million excess has to go somewhere. It goes to equity: a deemed dividend by the receiving entity and a deemed capital contribution by the transferring entity. Symmetrically, if consideration comes in below carrying amount, the receiver records a capital contribution. Cash paid or received in a common-control transfer that is not a routine commercial exchange is, in substance, a distribution or contribution between the parties, and the accounting says so.

A short journal entry makes the mechanics concrete. Sister B pays 115,000 in cash for net assets the parent carries at 100,000:

The transferor mirrors it: remove the net assets at carrying amount, record the cash, and credit the difference to equity as a capital contribution. No gain or loss hits either income statement.

The same substance-over-form logic governs other cash movements inside the group. Cross-charges for shared services can run through the income statement when they reasonably reflect costs incurred or value provided. But cash transferred for no goods or services is a pure equity transaction on both sides — a dividend by the payor, a contribution to the recipient — regardless of what the wire memo says.

The Retrospective Restatement: Pooling-Style Combination​

Measurement is only half the story. When the transferred net assets amount to a business (rather than a bare group of assets), the transfer is a change in the reporting entity under ASC 805-50-05-5, and the receiving entity must retrospectively combine the entities for all periods presented — as if the combination had been in effect since the inception of common control. This is the pooling-of-interests treatment the old APB Opinion 16 used for mergers, preserved here as a fossil: combine historical costs, combine historical results, eliminate intra-entity transactions, and restate comparatives.

The mechanics, per ASC 805-50-45 and ASC 250-10:

• Restate every prior period presented, but only for periods during which the entities were under common control. If Parent acquired Sister A in 2022 and Sister B in 2023, and A absorbs B in 2025, the combined history starts in 2023 — the earliest date both were commonly controlled. Periods before common control began are never restated.
• The current year is combined from January 1. Results of operations for the transfer year comprise the previously separate entities combined from the beginning of the period through the transfer date, plus the combined operations after it. A June transfer still shows a full year of combined results.
• Eliminate intra-entity balances and transactions in every period presented — revenue, cost of sales, receivables, payables, and the retained earnings effect at the start of the earliest period — so pre-combination results sit on the same basis as post-combination results.
• Disclose the combination. The footnotes for the transfer year must name and briefly describe the entity brought into the reporting entity and state the method of accounting used.
• One carved-out exception: previously capitalized interest under ASC 835-20 is not recalculated in the restated periods (ASC 250-10-45-21).

Not every transfer triggers all of this. The test is whether the net assets are more like a business or more like a group of assets:

• Business transferred → change in reporting entity → retrospective combination described above.
• Assets transferred (PwC's example: an unoccupied building) → book at carrying value prospectively, no restatement.
• Routine inventory transfers → recorded at the exchange price, common control or not, because valuation is not in question.
• Financial assets → depending on the facts, these may qualify for sale accounting at fair value or stay at historical cost at the subsidiary level. Run the transfer analysis rather than assuming carryover.

Getting the business-versus-assets call wrong in either direction is expensive: an unnecessary restatement wastes audit fees, while a missed retrospective combination draws a restatement of the restatement.

The Traps That Catch Small Groups​

Noncontrolling interests stay at carrying amount. If one combining entity is only partly owned, the noncontrolling interest is adjusted through equity to reflect the new ownership percentages — it is never remeasured to fair value, because there is no acquisition date. Changes in a parent's ownership while control is retained are equity transactions under ASC 810-10-45-23, full stop.

Pushdown optionality creates basis gaps. Pushdown accounting is an election each acquired company makes in its separate statements. When some subsidiaries elected it and others did not, the parent's basis and the transferor's books diverge, and the receiver must still use the parent's basis. Map every basis difference before the transfer; discovering one during audit fieldwork is how closings slip by weeks.

The receiving entity is not always the legal survivor. Like reverse-acquisition accounting, the accounting receiver can differ from the legal acquirer. When both entities sat under common control all period at the parent's basis, the designation does not matter — the restated statements come out the same either way. It matters precisely when basis differences exist, which is when you least want ambiguity. Work through which entity is deemed to receive the other and document it.

Book and tax diverge sharply. Carryover basis is a book rule, not a tax rule. An internal asset transfer can be a taxable event — triggering gain, transfer taxes, or state consequences — while the financial statements serenely show no gain at all. Model the tax cost of the legal steps independently, and book any resulting deferred taxes (including outside-basis differences) rather than assuming a book-tax match.

Goodwill impairment history has no clean answer. When a transferred business joins the receiver's reporting units, should historical impairment tests pretend it was always part of those units, or treat it as its own unit for the back periods? There is no specific guidance; two approaches developed in practice. Pick one, apply it consistently, and disclose enough for the position to be followed.

IFRS reporters live in a different world. IFRS 3 excludes common-control combinations from its scope entirely, and the IASB's long-running project on the topic has yet to produce a standard. In practice most IFRS reporters use a predecessor-values method that looks much like ASC 805-50's carryover basis — but it is a policy choice requiring disclosure under IAS 8, not a codified rule. If your group reports under both frameworks, the memos differ even when the numbers rhyme.

Booking It in Plain-Text Ledgers​

The equity-plug mechanics translate directly into a Beancount-style ledger. Suppose Sister B pays 115,000 USD in cash for a business the parent carries at 100,000 USD. No fair-value debate, no goodwill — just carrying amount plus an equity distribution for the excess (see the Beancount documentation for ledger syntax if this format is new to you):

2025-06-30 * "Receive Division D from Sister A — common-control transfer at parent's carrying amount"
  Assets:Investments:Division-D          100,000 USD
  Equity:Distributions:Deemed-Dividend    15,000 USD
  Assets:Cash:Checking                   -115,000 USD

Two details worth keeping. First, date the entry on the legal transfer date even though the comparative statements will present the business as combined from the start of the earliest common-control period — the retrospective combination is a presentation exercise over historical data, not a backdated journal entry. Second, keep the parent's basis schedule as a supporting file next to the ledger: when an auditor asks why the investment sits at 100,000 USD against a 115,000 USD wire, the answer is one schedule, not a reconstruction.

Before You Sign the Transfer Agreement​

The accounting rewards preparation and punishes improvisation, so sequence the work ahead of the legal close. Confirm common control exists under ASC 810 rather than assuming sister status is enough. Pull the ultimate parent's basis in every asset and liability moving, including any pushdown gaps. Decide whether a business or a bare asset group is transferring, because that call alone determines whether comparatives get restated. Draft the restated prior periods — combined only from the inception of common control, intra-entity activity eliminated — before the auditors ask. And get tax advice on the legal steps early, since the same transfer can be a nonevent on the books and a taxable event on the return. Do those five things and the reorganization closes as paperwork; skip them and it closes as a restatement.