Secondary-market agreement requiring a lender to deliver an eligible product amount by a specified date or resolve the shortfall.
A mandatory commitment is a secondary-market agreement requiring a lender to deliver an eligible dollar amount of a mortgage product by a specified date or resolve the delivery shortfall under the commitment terms.
A mandatory commitment matters because it lets a lender lock investor pricing for an amount and product without tying the commitment to one named borrower and property. Eligible loans with matching characteristics can generally be assigned or substituted within the commitment rules.
The flexibility comes with a firmer delivery obligation. If the lender cannot deliver enough qualifying loans by the deadline, it may need to pair off or otherwise resolve the shortfall and can owe a market-based fee.
This execution remains separate from the borrower’s note terms. The borrower does not become responsible for the lender’s pair-off cost or investor delivery obligation merely because the loan was expected to fill the commitment.
Borrowers usually do not see mandatory commitment language in ordinary closing documents. They see the borrower-facing rate, lock period, and loan terms.
The term becomes useful when explaining why lenders are disciplined about lock expirations, loan changes, product eligibility, and closing forecasts. Behind the scenes, the lender may be matching a changing Mortgage Pipeline against commitments with fixed product, amount, pricing, tolerance, and delivery-period requirements.
| Stage | Main lender obligation |
|---|---|
| Commitment | Accepts price, product, amount, tolerance, and delivery deadline |
| Pipeline allocation | Identifies eligible closed or expected loans that can fill the commitment |
| Delivery | Assigns qualifying loans up to the required amount |
| Reconciliation | Measures overdelivery, underdelivery, or ineligible loans |
| Shortfall resolution | Substitutes eligible loans, extends when permitted, or pairs off under the terms |
| Term | Main distinction |
|---|---|
| Best-Efforts Commitment | Usually tied more directly to whether a specific loan closes |
| Mandatory commitment | Creates a firmer delivery obligation for the lender |
| To-Be-Announced (TBA) Market | Broader agency MBS forward market connected to lender pricing and hedging |
A lender accepts a mandatory commitment to deliver $10 million of eligible 30-year fixed-rate mortgages by month-end. It initially expects twelve locked loans to fill the commitment.
Two loans fall out, but three other qualifying loans close early. The lender substitutes eligible production and delivers within the commitment tolerance. If it remained short, the lender would need to resolve the difference under the investor’s pair-off or extension rules.
Mandatory commitment differs from Best-Efforts Commitment because mandatory execution places a stronger delivery burden on the lender.
It differs from Rate Lock because rate lock is the borrower-facing rate agreement, while mandatory commitment is part of the lender’s investor or market execution.
It also differs from Loan Sale because a commitment sets up a future delivery or sale obligation, while the loan sale is the actual transfer.