Underwriting — 8 min read
Reading a T-12 the way an underwriter does
The operating statement you send and the operating statement a credit committee reads are not the same document.
July 29, 2026

A trailing twelve-month operating statement arrives as a spreadsheet of collections and costs. It leaves underwriting as a smaller number, and the difference is entirely made of adjustments that are standard, predictable and almost never explained to the borrower in advance.
What gets removed from income
- Concessions, bad debt, model units and employee units — economic vacancy, not physical vacancy.
- Non-recurring income: a lease termination fee, an insurance recovery, a one-off legal settlement.
- Pro-forma rent. Underwritten rent is what is on the rent roll today, capped at market.
- Percentage rent with no multi-year history.
What gets added to expense
A management fee is applied whether or not you pay one — typically three to four percent of effective gross income — because a lender has to be able to hire a manager if it takes the property back. Replacement reserves are deducted per unit or per square foot. Taxes are reassessed at the purchase price where the jurisdiction reassesses on sale, which on a below-market-basis property can be the largest single adjustment in the file.
How to send a better package
Send the statements in the accounting system’s own export rather than a retyped summary. Reconcile the rent roll to the December collections line before anyone else does. Flag the non-recurring items yourself and say what they were. An underwriter who finds a surprise re-reads everything; an underwriter who is told about it in advance reads on.
Written for a demonstration site. Chordline Commercial Capital is fictional and every figure quoted above is illustrative rather than observed.Full disclosures.
More notes
SizingThe constraint that bindsThree tests decide the size of a commercial loan. Knowing which one is stopping you is worth more than knowing all three.
StructureThe balloon nobody mentionsA thirty-year amortisation with a ten-year term repays about a fifth of the principal. The rest is due on a Tuesday.
TransitionalBridge debt is a date, not a rateThe interesting number on a bridge loan is not the coupon. It is the day the loan is due and whether anything retires it.