Master servicer vs special servicer: who handles your CMBS loan, and when

The master servicer handles a CMBS loan while it performs: it collects payments, handles routine requests and advances missed payments to bondholders. The special servicer takes over when a servicing transfer event occurs, such as a payment 60 days late or a missed balloon, and decides on the workout, sale or foreclosure. Both work under the trust’s pooling and servicing agreement.

The terms below are from the reference deal used across this site, BANK5 2025-5YR14 (master servicer Trimont LLC, special servicer Torchlight Loan Services, LLC): its pooling and servicing agreement and prospectus. Other deals differ in detail.

Side by side

	Master servicer	Special servicer
Handles	Performing loans	Loans after a servicing transfer event, and foreclosed property (REO)
Main jobs	Collect payments, escrows and reserves; insurance; financial statements and inspections; routine waivers and consents	Asset status report; modification, forbearance, discounted payoff, note sale, foreclosure or deed in lieu; managing and selling REO
Advances	Makes P&I advances and servicing advances, unless nonrecoverable	Makes no P&I advances
Major decisions on performing loans	Forwards them to the special servicer, unless the two agree the master will process them	Processes them, subject to directing certificateholder consent
Typically appointed by	The depositor at closing	The controlling class, through the directing certificateholder; often an affiliate of the B-piece buyer
Paid	A servicing fee, a small annual percentage set loan by loan in the PSA	Special servicing fee 0.25% a year ($3,500 a month minimum), workout fee 1%, liquidation fee 1%
Directory	Master servicers	Special servicers

How a loan moves between them

The transfer triggers

In the reference PSA, a loan moves to the special servicer when any “Servicing Transfer Event” occurs (section 1.01). The main ones:

1. A missed balloon payment, unless the borrower has delivered a signed refinancing commitment or purchase contract that closes within 120 days of maturity (and then only while no P&I advance is needed).
2. Any other payment 60 days late.
3. Imminent default: the servicer determines that a payment or balloon default is likely in the foreseeable future and would last at least 60 days, with the directing certificateholder’s consent while it has control.
4. Another default that the servicer judges may materially impair the property’s value or the loan, including failure to keep required insurance.
5. Insolvency events: a bankruptcy or receivership order, the borrower consenting to a receiver, admitting in writing it cannot pay its debts, or filing for bankruptcy relief.
6. Notice of foreclosure proceedings against the property by someone else.

The day count after a missed payment is laid out on the servicer clock; a missed maturity is on maturity default.

The return trip

A specially serviced loan becomes a Corrected Loan, and goes back to the master servicer, after three consecutive full and timely monthly payments (counting any modification) if no other transfer event is continuing or foreseeable (PSA section 1.01, “Corrected Loan”; section 3.19(a)). From then on, the special servicer earns a 1% workout fee on each collection of principal and interest for as long as the loan stays corrected, so its incentive does not end when the file closes. The numbers are on special servicing fees.

Advances: why the master servicer moves fast

When a payment is missed, the master servicer generally advances it to bondholders: principal and interest advances, and servicing advances for taxes, insurance and property protection. It earns interest on those advances and is reimbursed before bondholders. It stops advancing once it judges an advance nonrecoverable, never advances a balloon payment, and cuts interest advances in proportion once an appraisal reduction applies. The special servicer makes no P&I advances and no recoverability determination on them (prospectus, “Advances”). For a borrower, that means a delinquency costs the trust money from the first month, which is why servicers act early.

Who decides what on a performing loan

Not every request goes to the master servicer alone. In the reference deal, a request that is a “Major Decision” on a loan that is not specially serviced is forwarded to the special servicer, which processes it (including dealing with the borrower) unless the two agree otherwise, subject to the directing certificateholder’s consent while it has control. Other routine matters, such as waivers of non-material covenant defaults, are “Master Servicer Decisions” handled without that consent (prospectus, “Modifications, Waivers and Amendments”). Major Decisions include changes to monetary or material non-monetary terms, waivers of due-on-sale clauses, assumptions that release a borrower or guarantor, collateral releases, extensions and discounted payoffs. Practical guidance: servicer consent, loan assumption, partial release.

Other servicing roles you may meet

• Primary servicer or sub-servicer: a servicer the master servicer delegates to. In BANK5 2025-5YR14, Midland Loan Services was primary servicer for certain loans sold by JPMorgan Chase Bank.
• Operating advisor: an independent party that reviews the special servicer’s actions and reports to bondholders, and can recommend its replacement (BellOak, LLC here). Required by the risk retention rule when a B-piece buyer holds the retained interest; see risk retention.
• Asset representations reviewer: reviews delinquent loans for breaches of the loan sellers’ representations when investors vote for a review (also BellOak here).
• Directing certificateholder: not a servicer, but it approves or objects to the special servicer’s major decisions; see the B-piece.
• Servicer of a split loan: if your loan’s senior notes sit in several trusts, one trust’s servicers usually service the whole loan under that trust’s agreement; see pooling and servicing agreement.

What to do with this as a borrower

• Performing loan, routine request: start with the master servicer, and expect anything material to need the special servicer’s sign-off. Build in time. Details on the master servicer.
• Trouble coming: a loan can be transferred before a payment is missed, as an imminent default. A clear written case helps; the modification rules are on loan modification.
• Already with the special servicer: identify it with who is my special servicer, read special servicing, and line up refinance or recapitalization options early. Get help from Janover Capital LLC.

Related: CMBS primer, watchlist, glossary.

Sources: BANK5 2025-5YR14 Pooling and Servicing Agreement, dated as of April 1, 2025: section 1.01 (“Servicing Transfer Event”, “Corrected Loan”, “Workout Fee Rate”, “Liquidation Fee Rate”), sections 3.11, 3.19(a) and 4.03; BANK5 2025-5YR14 prospectus: “Summary of Terms” (Master Servicer, Primary Servicer, Special Servicer, Operating Advisor, Asset Representations Reviewer), “Pooling and Servicing Agreement” (Advances; Special Servicing Compensation; Modifications, Waivers and Amendments). Not legal advice; your trust’s agreement governs.