Collateral accounting is the set of rules that determine whether a pledged asset sits on the borrower’s balance sheet or the lender’s, and how each party reports the loan, the asset, and any changes in its value. Under U.S. GAAP, the governing standard is ASC Topic 860, Transfers and Servicing. Its core rule is straightforward: most pledges are secured borrowings, not sales, so the collateral stays on the borrower’s books and the lender keeps it off its own. Everything else in this area is a variation on that rule.
The Rule That Decides Where Collateral Sits
ASC 860 asks whether the borrower has surrendered control of the asset. A transfer counts as a true sale only when three conditions are met at once: the asset is isolated from the transferor and its creditors, the recipient has the right to pledge or sell what it received, and the transferor does not maintain effective control. If any condition fails, the transaction is a secured borrowing.1Financial Accounting Standards Board. Transfers and Servicing (Topic 860) – Accounting Standards Update 2014-11
Ordinary secured loans, repurchase agreements, and securities lending arrangements almost always fail those conditions. The borrower keeps the asset. The lender records only the receivable.
How the Borrower Reports Pledged Collateral
In a typical secured borrowing, the borrower keeps the pledged asset on its balance sheet and records the loan proceeds as a liability. Pledging does not change measurement. The borrower continues to depreciate equipment, amortize intangibles, or mark securities to market exactly as it would if the asset were unencumbered.
Reclassification is required in one specific situation: when the lender has the contractual right to sell or re-pledge the collateral. The borrower then moves the asset into a separate line, often labeled something like “Securities Pledged to Creditors,” so investors can see the asset is not freely available.1Financial Accounting Standards Board. Transfers and Servicing (Topic 860) – Accounting Standards Update 2014-11 Measurement stays the same. Only the label changes.
Footnote disclosure carries much of the weight here. For repurchase agreements and securities lending arrangements treated as secured borrowings, ASC 860 requires a breakdown of the total obligation by class of collateral pledged, the remaining contractual maturity of the agreements, and a discussion of risks associated with a decline in collateral value.1Financial Accounting Standards Board. Transfers and Servicing (Topic 860) – Accounting Standards Update 2014-11 Investors can see how much is pledged, for how long, and what happens if the market moves against the borrower.
How the Lender Reports Collateral
The lender’s treatment turns on one question: does it have the right to sell or re-pledge the collateral?
If not, the collateral stays off the lender’s balance sheet. The lender discloses the arrangement in its footnotes but recognizes only the loan receivable. This is the usual outcome for an ordinary commercial loan secured by equipment or real estate.
If the lender has that right and exercises it by selling the collateral to a third party, the accounting changes. The lender records the sale proceeds as an asset and books a liability for the obligation to return equivalent collateral when the borrowing is repaid. A lender that sells $1 million of pledged securities debits cash for $1 million and credits an “Obligation to Return Pledged Collateral” liability for the same amount.1Financial Accounting Standards Board. Transfers and Servicing (Topic 860) – Accounting Standards Update 2014-11 The liability captures the economic reality: cash in hand, asset owed back.
Cash Collateral Follows a Different Rule
Cash is fungible. Once it changes hands, no one can tell whether it was spent, invested, or left alone. ASC 860 therefore requires the party receiving cash collateral to record it as an asset paired with a liability for the obligation to return it. The party posting the cash derecognizes it and records a receivable.1Financial Accounting Standards Board. Transfers and Servicing (Topic 860) – Accounting Standards Update 2014-11
This applies whether or not the recipient has any contractual right to re-use other forms of collateral. Cash collateral is always on the recipient’s balance sheet and always off the poster’s. You cannot treat cash as “pledged but untouched” the way you can treat a bond held in a segregated account.
Rehypothecation and Its Effect on Both Sides
Rehypothecation is the lender’s re-use of collateral it received, by pledging or selling it to a third party. It is common in prime brokerage, securities lending, and repo markets. When the lender has that contractual right and exercises it, the borrower loses immediate control of the asset even though it still holds the economic interest.
On the borrower’s side, the asset gets reclassified to reflect the loss of immediate access. On the lender’s side, selling rehypothecated collateral triggers on-balance-sheet recognition of the sale proceeds and the return obligation described above. The borrower carries a real risk: if the lender becomes insolvent after rehypothecating the collateral, the borrower may hold only an unsecured claim for the return of an equivalent asset rather than the original property.
Valuation, Haircuts, and Margin Calls
Pledged financial assets used in margin accounts, repos, and securities lending are typically measured at fair value each reporting period. Under ASC 820, fair value is the price that would be received to sell the asset in an orderly transaction between market participants at the measurement date. For liquid securities, that usually means the closing market price.
Lenders rarely lend dollar-for-dollar. They apply a haircut, a percentage reduction that buffers against price swings and liquidation costs. A security worth $100,000 with a 20 percent haircut supports only $80,000 of borrowing. The Federal Reserve applies similar margins to collateral pledged at its discount window, calibrating the reduction to the historical volatility and liquidity of each asset class.2Federal Reserve. Collateral Valuation
Between reporting dates, collateral is marked to market. If value drops below an agreed threshold, the lender issues a margin call for additional collateral or partial repayment. In brokerage accounts, maintenance margin generally cannot fall below 25 percent of the current market value of the securities, though many firms set their own requirements at 30 or 40 percent.3FINRA. Know What Triggers a Margin Call Posting additional collateral triggers the same borrower and lender entries described earlier. New cash is derecognized by the poster and recognized by the recipient with a return obligation; new securities are reclassified if the lender can re-pledge them. When collateral rises well above the threshold, the lender may be required to release the excess.
What Happens at Default
Default changes everything. Under ASC 860, when a borrower defaults and is no longer entitled to redeem the pledged asset, it must remove the asset from its balance sheet. The lender recognizes the collateral as its own asset, measured initially at fair value.1Financial Accounting Standards Board. Transfers and Servicing (Topic 860) – Accounting Standards Update 2014-11
If the lender had already sold the collateral through rehypothecation before default, it derecognizes the return obligation, since that obligation no longer exists. The borrower, meanwhile, does not automatically eliminate the loan liability just because the collateral has been forfeited. The debt can be derecognized only to the extent it meets the separate conditions for extinguishing a liability.
The asymmetry catches people off guard. Losing the collateral does not wipe out the debt. A borrower who pledged $800,000 in securities against a $1 million loan and then defaults still owes the remaining $200,000. The lender books the seized securities at fair value and pursues the deficiency separately.
A Note on IFRS 9
Companies reporting under International Financial Reporting Standards follow IFRS 9, which reaches similar outcomes through a different test. Instead of leading with control, IFRS 9 first asks whether the entity has transferred substantially all the risks and rewards of ownership. If it has, the asset is derecognized. If it has retained substantially all risks and rewards, the asset stays. Only when the answer is ambiguous does the standard fall back to a control test, and if control is retained, the entity recognizes the asset to the extent of its continuing involvement.4IFRS Foundation. IFRS 9 Financial Instruments For a standard secured loan, both frameworks land in the same place: the collateral stays on the borrower’s books. The difference tends to surface only in complex structured transactions where control and risk diverge.