MDIA Mortgage: Disclosures, Waiting Periods, and Tolerances

The Mortgage Disclosure Improvement Act, known as the MDIA, is a 2008 federal law that guarantees home loan borrowers a set schedule of written disclosures and mandatory review time before closing. Its core requirement is simple: your lender must deliver an initial Loan Estimate at least seven business days before closing, and a final Closing Disclosure at least three business days before you sign. If certain key terms change late in the process, the three-day clock starts over.¹

What the MDIA Actually Does

Before the MDIA, borrowers routinely saw final loan terms for the first time at the closing table, with no realistic chance to walk away. Congress added two protections that still define residential mortgage lending today: a seven-business-day gap between the initial Truth in Lending disclosures and closing, and a three-business-day gap after any corrected disclosure when the annual percentage rate moved beyond a set tolerance.²

In 2015, the Consumer Financial Protection Bureau folded those timing rules into the TILA-RESPA Integrated Disclosure framework, usually called TRID. TRID retired the old Good Faith Estimate and early Truth in Lending form and replaced them with two documents you’ll actually see: the Loan Estimate and the Closing Disclosure. The MDIA’s waiting periods survived intact and now sit in Regulation Z at 12 C.F.R. § 1026.19(e) and (f). When lenders talk about “MDIA compliance” today, they mean these timing rules.³

The Two Documents You Should Receive

The Loan Estimate arrives early. Your lender must deliver it, or place it in the mail, within three business days of receiving your application and no later than seven business days before closing. It shows the loan amount, interest rate, estimated monthly payment including taxes and insurance, the APR, and the total interest you’d pay over the loan’s life. It also itemizes projected closing costs by category, which matters later for fee tolerances, and identifies which settlement services you can shop for.⁴

The Closing Disclosure comes later and shows actual, final numbers. You must have it at least three business days before you sign, so you can compare it line by line against the Loan Estimate.⁵

The 7-3-3 Waiting Periods

The mortgage industry sometimes calls the MDIA framework the “7-3-3 rule.” The first seven refers to the minimum time between the initial Loan Estimate and closing. The first three is the minimum time between the Closing Disclosure and your signature. The second three is the mail presumption, discussed below.

Those seven days exist so you can review your terms, shop other lenders, or step away entirely. The MDIA specifically requires lenders to tell you that receiving disclosures or signing an application does not obligate you to complete the loan.¹

How Business Days Are Counted

For both waiting periods, “business days” means all calendar days except Sundays and federal public holidays: New Year’s Day, Martin Luther King Jr. Day, Washington’s Birthday, Memorial Day, Independence Day, Labor Day, Columbus Day, Veterans Day, Thanksgiving, and Christmas. Saturday counts. That’s a broader definition than most borrowers assume, so the clock runs faster than a Monday-through-Friday count would suggest.⁶

The Mail Presumption

When disclosures are mailed instead of handed to you, the law presumes you receive them three business days after the mailing date. So if a lender mails the Closing Disclosure, three business days for delivery are added on top of the three-day review period, which can stretch the timeline considerably.⁶ Electronic delivery works a little differently: if the lender can show you actually received the document earlier through a read receipt or system log, the review period starts from that confirmed date. Without proof of receipt, the same three-day mail presumption applies.

Changes That Restart the Three-Day Clock

After you receive your Closing Disclosure, only three types of change force a corrected disclosure and a fresh three-business-day waiting period:

The APR increases beyond tolerance. For a standard loan with regular payments, the disclosed APR cannot go up by more than one-eighth of a percentage point (0.125%). For loans with irregular features, such as multiple advances or uneven payments, the tolerance is one-quarter of a percentage point (0.25%). Move outside those bounds and a new Closing Disclosure has to go out.⁷
A prepayment penalty is added that wasn’t in the original disclosure.³
The loan product itself changes, such as switching from a fixed-rate mortgage to an adjustable-rate mortgage.³

Each corrected Closing Disclosure resets the clock completely. If a corrected disclosure arrives Monday and no holiday intervenes, the earliest you could close is Thursday. Multiple corrections mean multiple resets.

Changes That Don’t Delay Closing

Not every last-minute adjustment restarts the clock. The CFPB has clarified that typo corrections, issues discovered at the final walk-through, and most changes to amounts paid at closing, including seller credits, do not require a new three-day review.⁸ Your lender still has to give you a corrected Closing Disclosure reflecting the change, but the closing itself can go forward on the original date so long as none of the three trigger conditions above are involved. That matters in practice, because walk-through surprises are common in the final days.

Fee Tolerance Limits

The Loan Estimate is more than informational. It sets binding ceilings on how much your actual closing costs can rise. Fees fall into three tolerance categories.

Zero tolerance. Some fees cannot increase at all between the Loan Estimate and the Closing Disclosure: fees paid to the lender (such as origination charges), fees paid to a mortgage broker, fees for services provided by the lender’s affiliates, fees for third-party services where the lender didn’t allow you to shop, and transfer taxes. Any increase must be absorbed by the lender.⁹

Ten-percent cumulative tolerance. For third-party services you were allowed to shop for and where you chose a provider from the lender’s list, plus recording fees, the total across the category can rise by up to 10% from the Loan Estimate. The tolerance is measured across the group, not fee by fee. Exceed 10% and the lender owes you the overage.⁹

No cap. Some costs have no tolerance limit because they depend on outside factors: prepaid interest, property insurance premiums, escrow deposits, property taxes, and services from a third-party provider you chose on your own outside the lender’s list. These can change freely, though the lender’s estimate must reflect the best information available at the time.⁹

When a lender exceeds a tolerance limit, the required refund, called a “cure,” is due within 60 calendar days of closing. Comparing your Loan Estimate to your Closing Disclosure category by category is the most reliable way to catch overcharges.

Waiving the Waiting Period

The waiting periods can be waived, but only for a genuine personal financial emergency where a delay of a few days would cause real harm. The regulation’s textbook example is a home about to be sold at foreclosure during the waiting period.⁹ A rate lock about to expire or a scheduled move-in date does not qualify.

To waive, every borrower on the loan must sign a dated written statement, in their own words, describing the emergency and expressly waiving the waiting period. The lender is not allowed to hand you a pre-printed form for this. Because a regulator or court can later find the emergency insufficient, most lenders are cautious about accepting waivers at all.

Which Loans Are Covered

The MDIA timing and disclosure rules apply to closed-end consumer credit secured by real property or a cooperative unit. That covers most home purchase mortgages and refinances. The loan must be made by a creditor as defined under Regulation Z, must be for personal, family, or household purposes, and must be closed-end, meaning it has a fixed repayment schedule rather than a revolving credit line.⁵

Several loan types are excluded:

Reverse mortgages, which have their own separate disclosure regime under Regulation Z.
Home equity lines of credit (HELOCs), which are open-end credit governed by different disclosure rules.
Commercial or business-purpose loans, even when secured by real estate.

If you’re unsure whether your loan is covered, check whether you received a Loan Estimate. If you did, the full timing and tolerance framework applies.

What Happens If a Lender Violates the Rules

Lenders who skip or compress the waiting periods, deliver inaccurate disclosures, or charge fees beyond tolerance face consequences from two directions.

The CFPB can bring enforcement actions for systemic violations, either through federal court or administrative proceedings, and can seek civil monetary penalties, restitution, and injunctions requiring changes to a lender’s practices.¹⁰

Individual borrowers can also sue. Under the Truth in Lending Act, a borrower who proves a disclosure violation in a closed-end mortgage can recover statutory damages between $400 and $4,000 per violation, plus actual damages for any financial harm, plus attorney’s fees and court costs.¹¹ Class actions face a separate cap. Beyond the dollar amounts, a lender’s failure to observe the waiting periods can expose the loan agreement itself to legal challenge, which is why compliance departments treat these timelines as fixed.

1
Congress.gov. H.R.4019 – Mortgage Disclosure Improvement Act of 2007
2
Consumer Financial Protection Bureau. Truth in Lending Act
3
eCFR. 12 CFR 1026.19 – Certain Mortgage and Variable-Rate Transactions
4
Consumer Financial Protection Bureau. What Required Mortgage Closing Services Can I Shop For?
5
Consumer Financial Protection Bureau. TILA-RESPA Integrated Disclosure FAQs
6
Consumer Compliance Outlook. Mortgage Disclosure Improvement Act: Examples and Explanations
7
Consumer Financial Protection Bureau. 12 CFR 1026.22 – Determination of Annual Percentage Rate
8
Consumer Financial Protection Bureau. Know Before You Owe: You’ll Get 3 Days to Review Your Mortgage Closing Documents
9
Consumer Financial Protection Bureau. 12 CFR 1026.19 – Certain Mortgage and Variable-Rate Transactions
10
Consumer Financial Protection Bureau. Enforcement Actions
11
Office of the Law Revision Counsel. 15 USC 1640 – Civil Liability