Two federal deadlines sit underneath almost every financed home purchase in the United States. A lender has three business days after an application to send a Loan Estimate, and the buyer must receive the Closing Disclosure at least three business days before closing. Both come from Regulation Z, the rule the Consumer Financial Protection Bureau enforces under the Truth in Lending Act, and both apply to most closed-end mortgages secured by a home. Reverse mortgages, home equity lines of credit and manufactured housing loans not secured by real estate are outside these forms.

When the first clock starts

Under the rule, an application exists once a lender has six pieces of information: the borrower's name, income and Social Security number (to pull a credit report), the property address, an estimate of the property's value and the loan amount sought. From that point the lender has three business days to deliver the Loan Estimate, a standard three-page form that shows the expected interest rate, monthly payment, closing costs, estimated taxes and insurance, and features such as a prepayment penalty.

Until the buyer has the Loan Estimate and has told the lender they intend to proceed, the lender may not charge application fees. The one exception is a reasonable fee for pulling the credit report. A Loan Estimate is not an approval or a denial; the lender asks for more financial documents if the buyer moves forward.

What business day means here

For these deadlines, Regulation Z counts every calendar day except Sundays and the federal legal holidays, so Saturdays count. That is a different definition from a lender's ordinary business hours. Thanksgiving, Thursday, Nov. 26, 2026, and Christmas Day are both excluded from the count, which matters for anyone scheduling a closing around the holidays.

How far the final costs can move

The rule sorts closing costs into groups by how much they may rise between the Loan Estimate and closing. Fees paid to the lender or its affiliates generally cannot increase. Charges for third-party services that are not paid to the lender or an affiliate and that the buyer was allowed to shop for, together with recording fees, may rise as long as their combined total does not exceed the estimate by more than 10%. A third group, including prepaid interest, property insurance premiums and amounts placed in escrow, can change as long as the lender's estimate was based on the information reasonably available when it was made.

The second clock: the Closing Disclosure

The Closing Disclosure is a five-page form that lays out the final loan terms, projected monthly payments and every fee and cost. It must reach the buyer at least three business days before consummation, which is usually the closing appointment. The CFPB describes that window as the time to set the final figures against the Loan Estimate and raise questions with the lender.

Most corrections after that point do not restart the clock. Three changes do, and each requires a corrected disclosure and a new three-business-day wait: the annual percentage rate becomes inaccurate beyond the rule's tolerance, the loan product changes (a fixed-rate loan becoming an adjustable one, for example), or a prepayment penalty is added.

Putting the two forms side by side

Because every lender must use the same Loan Estimate layout, two or three estimates from different lenders can be compared line by line: the rate, the points in section A, the services in sections B and C, and the cash needed at closing. The Closing Disclosure uses matching section labels, so each line on the final form can be traced back to its estimate. The CFPB's pages on both forms walk through each section.

The questions worth bringing to the lender or a real estate attorney are specific ones: why a fee moved, whether it fell in a group that was allowed to move, and whether a change triggers a new waiting period under the rule.

This article reports rules, data and expert guidance. It is not legal, tax, insurance or financial advice. Talk to a licensed pro, your tax advisor or your insurer before you act on it.

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