The three-day clock, and the near-universal error about it. The consumer must receive the Closing Disclosure "no later than three business days before consummation" (12 CFR 1026.19(f)(1)(ii)(A)), and where it is not delivered in person, receipt is presumed three business days after mailing. Business day here carries Regulation Z's precise meaning, all calendar days except Sundays and federal holidays, so a Saturday counts.
The rule is easily read as meaning that any change restarts the three days. It does not. 12 CFR 1026.19(f)(2)(ii) lists the corrections that require a new waiting period and there are three of them: the annual percentage rate "becomes inaccurate, as defined in § 1026.22"; "the loan product is changed"; or "a prepayment penalty is added". Every other inaccuracy is handled by paragraph (f)(2)(i), which requires corrected disclosures "at or before consummation" with no new waiting period at all. The broader reading is not harmless, because it teaches borrowers that raising a question about a fee in the final week will delay their closing. Usually it will not.
The day-before inspection right. The same paragraph (f)(2)(i) adds an obligation that stands on its own: the creditor "shall permit the consumer to inspect the disclosures provided under this paragraph, completed to set forth those items that are known to the creditor at the time of inspection, during the business day immediately preceding consummation", and it may withhold only items relating solely to the seller's side. That is a right to see the day-before state of the numbers, distinct from the three-day delivery requirement, and it exists precisely for the situation where figures are still moving.
The charge may not exceed what the provider received. 12 CFR 1026.19(f)(3)(i) states that "the amount imposed upon the consumer for any settlement service shall not exceed the amount actually received by the settlement service provider for that service." A creditor or settlement agent may not mark up a third-party service and keep the difference. The one exception, at (f)(3)(ii), permits an average charge, and it is fenced: the average must not exceed the average actually paid across a defined class of transactions, the class must be defined by an appropriate period, geography and loan type, the same average must be used for every transaction in the class, and it may never be used for any kind of insurance, for any charge based on the loan amount or property value, or where another law prohibits it.
The form has to confess an overcharge. Where the final Total Closing Costs differ from the Loan Estimate's figure, the "Did this change?" column must say so. And where the increase exceeds the limits Regulation Z places on increases in closing costs, 12 CFR 1026.38(e)(2)(iii)(A)(3) requires a statement "that such increase exceeds the legal limits by the dollar amount of the excess", together with a pointer to where any refund is shown. The tolerance rules that produce that conclusion belong to the closing costs entry; the point here is that the form is required to state the answer rather than leave the borrower to compute it.
After signing, three separate deadlines keep running. If an event in the 30 days after consummation makes the disclosures inaccurate and changes an amount the consumer actually paid, corrected disclosures are due within 30 days of the creditor learning of it (12 CFR 1026.19(f)(2)(iii)). Non-numeric clerical errors may be corrected within 60 days (f)(2)(iv). And most usefully, where amounts paid exceeded what the good-faith rules permitted, the creditor must refund the excess and send corrected disclosures "no later than 60 days after consummation" (f)(2)(v). Comparing the two forms after closing is therefore still worth doing, which is not obvious and is not printed anywhere on the form.
Two things it costs, and one thing it does not. No fee may be imposed by a creditor or servicer "for the preparation or delivery" of the Closing Disclosure (12 CFR 1026.19(f)(5)). Separately, the settlement agent must give the seller its own version covering the seller's side of the transaction (12 CFR 1026.19(f)(4)). And the three days to read the form are not three days to cancel: the right of rescission is a different provision, and it does not attach to a mortgage used to buy a home. That distinction is drawn under refinancing and home equity loan.