How Is a Warehouse Margin Call Calculated, and What Does a Mortgage Seller Owe When One Lands?

How is a warehouse margin call calculated? In a warehouse line documented as a repurchase facility, the lender subtracts the collateral value it assigns to the purchased mortgage loans from a margin amount derived from the funding outstanding, and the shortfall is the margin deficit the seller must eliminate. Under the Master Repurchase Agreement, September 1996 Version, the buyer’s margin amount is “the amount obtained by application of the Buyer’s Margin Percentage to the Repurchase Price for such Transaction as of such date.” The repurchase price is the purchase price plus accrued price differential, so the call grows with unpaid pricing even when the collateral has not moved.

What formula produces the margin deficit?

A margin deficit exists when “the aggregate Market Value of all Purchased Securities subject to all Transactions in which a particular party hereto is acting as Buyer is less than the aggregate Buyer’s Margin Amount for all such Transactions,” and the seller cures by transferring cash or additional securities reasonably acceptable to the buyer until the total equals or exceeds that amount. Mortgage loans reach the form through paragraph 1, which applies it to transfers of “securities or other assets.” Where the parties agree no percentage, the form supplies one: market value on the purchase date divided by purchase price on the purchase date.

Warehouse facilities keep the architecture and move the base. In the JPMorgan facility for Pulte Mortgage LLC, “Margin Amount” is the applicable margin percentage multiplied by the market value of the purchased loan rather than by the repurchase price. One formula haircuts the debt and the other haircuts the asset, so the same nominal percentage produces a different call. The percentage is not in the filed agreement: both “Margin Percentage” and “Purchase Price” are defined in an unfiled side letter.

How does the lender determine market value?

The 1996 form assumes a quoted market, defining market value as a price “obtained from a generally recognized source agreed to by the parties or the most recent closing bid quotation from such a source,” plus accrued income. Whole loans have no such source, so warehouse forms substitute lender determination. The Pulte agreement defines market value as “what the Agent determines as the market value of any Purchased Loan, using a commercially reasonable methodology that is, in its sole discretion, in accordance with standards customarily applicable in the financial industry to third party service providers providing values on comparable assets,” and makes that determination “conclusive and binding upon the parties, absent manifest error.” Three qualifiers travel with the grant: the methodology must be commercially reasonable, conclusiveness yields to manifest error, and value is set “without reference to Hedge Agreements or Investor Commitments.”

What knocks a loan out of the borrowing base?

Eligibility is pushed to a schedule rather than negotiated in the body; the Pulte agreement provides only that “‘Eligible Loans’ is defined on Schedule EL.” Document delivery is the sharper risk. Primary loan documents must reach the custodian before the purchase date for a dry loan, and on or before the seventh business day after the purchase date for a wet loan, “in order for any particular Purchased Loan to continue to have Market Value.” A missed custodial deadline is not a covenant breach to be discussed; it zeroes the asset and produces the deficit arithmetically. Aging is handled through concentration instead: an “Aged Mortgage Loan” is a non-jumbo purchased loan whose purchase date was more than 60 days but not more than 90 days earlier, and reclassification does not restart the clock.

How long is the cure clock, and what must the notice say?

Timing turns on one defined moment. Notice given at or before the margin notice deadline on a business day requires transfer “no later than the close of business in the relevant market on such day”; notice given after it moves the transfer to the next business day. That deadline is whatever the confirmation or an annex says and, absent agreement, whatever market practice establishes. As to content, the form requires little: paragraph 4(a) conditions the obligation on “notice” alone and prescribes no calculation, valuation date, or loan-level breakdown. Failure to comply with paragraph 4 is itself an event of default, with no grace period on the face of the form. Prior forbearance buys nothing, because “the failure to give a notice pursuant to Paragraph 4(a) or 4(b) hereof will not constitute a waiver of any right to do so at a later date.”

What can be negotiated before the facility closes?

The form contemplates two borrower protections and leaves both blank. Paragraph 4(e) permits the parties to agree that margin rights may be exercised “only where a Margin Deficit or Margin Excess, as the case may be, exceeds a specified dollar amount or a specified percentage of the Repurchase Prices for such Transactions,” and that figure must be agreed before the transactions are entered. Paragraph 4(f) lets them agree that the test runs transaction by transaction rather than across the book. Counterparties do use these levers: on the same form in a non-mortgage facility, CHS Inc. and MUFG Bank fixed a daily 12:00 noon measurement, a cure due on the second business day after receipt of notice, and a $1,000,000 floor below which no call may be made.

Why does the remedy survive a bankruptcy filing?

Because the facility is a repurchase agreement. The statutory definition reaches transfers of “mortgage loans, interests in mortgage related securities or mortgage loans” against funds, with a simultaneous agreement to transfer them back “at a date certain not later than 1 year after such transfer or on demand.” A repo participant’s contractual right to liquidate, terminate, or accelerate “shall not be stayed, avoided, or otherwise limited by operation of any provision of this title or by order of a court or administrative agency.” The protection runs only so far: liquidation proceeds exceeding the stated repurchase prices and expenses “shall be deemed property of the estate, subject to the available rights of setoff.”

Practitioner takeaway

A margin call is arithmetic performed by the counterparty holding the pen. The advance rate sits in a side letter, the valuation standard is a discretionary grant with three qualifiers, eligibility sits on a schedule, and the cure can fall due the same day. The leverage is entirely ex ante — in the threshold, the calculation basis, the notice deadline, and the definition of market value. Read those four before the first transaction.