The escrows are the least glamorous part of a 221(d)(4) and the most common reason a capital plan comes up short. Here is each one, what it secures, and when the money comes back.
Working capital escrow
Posted at initial endorsement to cover costs the mortgage does not, and to absorb overruns.
Form and mechanics — verified from Form HUD-92412M. The escrow is posted as cash and/or one or more unconditional, irrevocable letters of credit issued to the lender by a banking institution. The form is structured as two buckets: a working capital amount and, for new construction only, a construction contingency amount.
Permitted uses of the working capital portion: furniture, fixtures and equipment not covered by loan proceeds; marketing and leasing costs; and accruals during construction for interest, MIP, taxes, ground rents, property insurance and assessments. The contingency portion covers cost overruns and HUD-approved change orders.
Release. The construction contingency is released at final endorsement. The working capital is released at the later of twelve months after final endorsement, or the point at which the project demonstrates to HUD’s satisfaction that it has achieved sustaining occupancy — 1.0 debt service coverage — for six consecutive months.
Amount. Industry sources consistently give 4% of the loan amount for new construction and 2% for substantial rehabilitation, with the new construction 4% understood as 2% working capital plus 2% contingency. That split is structurally consistent with the two buckets on HUD-92412M, which is meaningful support. We could not verify the percentages from the MAP Guide itself — treat them as the planning figure and confirm.
One narrowing worth knowing: the 2021 MAP Guide eliminated the working capital escrow for substantial rehabilitation LIHTC projects that are 90%+ Section 8 and 90%+ LIHTC, where the lender can demonstrate sufficient income during rehabilitation.
Assurance of completion
Secures completion of construction. Verified from Form HUD-92450M: permitted forms are cash, or one or more unconditional irrevocable letters of credit issued to the lender by a banking institution. The remaining balance returns at final mortgage insurance endorsement, provided compliant latent-defects assurance has been posted.
The form itself contains no percentage — the amount is a fill-in set by the firm commitment, which means the sizing rule lives in the MAP Guide. Industry sources describe 100% payment and performance bonds as one path. Letter-of-credit percentages are widely quoted in the market, including a higher figure where an identity of interest exists, but we could not verify any of those numbers from a source we trust and are not going to print them. Ask your lender for the current requirement and get it in writing early — on a large project this is one of the biggest single calls on liquidity in the whole transaction.
Latent defects escrow
This one we can state with confidence — it is verified from two HUD forms that agree exactly.
- 2.5% of the total amount of the construction contract.
- Permitted forms: cash escrow, irrevocable letter of credit from a banking institution, or a surety bond from an accredited U.S. Treasury surety — a wider set of options than the completion assurance allows.
- Posted after final endorsement, as the successor assurance to the completion deposit.
- Released to the contractor at the later of fifteen months after the date of final completion, or the point at which all latent defects have been corrected to HUD’s satisfaction — and in any event requires HUD approval and no existing event of default.
Operating deficit escrow
Covers the gap between completion and sustaining occupancy. It is required on a 221(d)(4), and it may be waived on some LIHTC transactions.
We are not publishing a sizing figure. The two formulations in circulation — a months-of-debt-service test that varies by building type, and a flat percentage of the loan — conflict with each other, and both trace back to the same publisher. The MAP Guide devotes a section titled “Calculating Operating Deficits” to this, which itself suggests HUD sizes it off the appraiser’s and underwriter’s absorption and lease-up analysis rather than applying a flat percentage. Expect it to be driven by your absorption schedule, and get the number from your lender.
Replacement reserves
Required, funded from operations after closing, and governed by the regulatory agreement. The initial and annual deposit figures in circulation come from a single publisher and we could not corroborate them independently, so we are not repeating them here.
Budgeting for all of it
The shape of the problem: working capital and completion assurance are both live at initial endorsement, both are meaningful percentages of a large number, and neither is inside the mortgage. Letters of credit reduce the cash drain but consume borrowing capacity and carry fees of their own.
Two planning points. First, working capital does not come back at completion — it waits on twelve months plus six months of sustaining occupancy, so assume it is tied up well into stabilization. Second, latent defects sits behind completion assurance rather than beside it, so the contractor’s security obligation continues for fifteen months past final completion.
Finally, a draft mortgagee letter circulated in February 2026 proposed cutting the new construction working capital escrow from 4% to 2% and adding a mortgageable construction contingency of 2–5%. It has not been finalized. Do not budget against it.