“Within 3 business days” means you have three qualifying business days to act, and the count starts the day after the triggering event — not the day it happens. The triggering event might be signing a contract, receiving a disclosure, or closing on a loan. Which days qualify as “business days” depends on the legal context you’re in, and getting it wrong by a single day can cost you a cancellation right or expose a business to penalties.
The Two Federal Definitions of Business Day
Federal law uses two different definitions, and which one controls depends on the type of transaction.
The general definition in Regulation Z treats a business day as any day a creditor’s offices are open for carrying on substantially all of its business functions.1eCFR. 12 CFR 1026.2 – Definitions and Rules of Construction For most banks and lenders that operate Monday through Friday, this effectively means weekdays that aren’t federal holidays. Saturday is out.
A broader definition applies to mortgage rescission rights and certain mortgage disclosure deadlines. For those purposes, a business day is every calendar day except Sundays and federal public holidays listed in 5 U.S.C. § 6103(a).1eCFR. 12 CFR 1026.2 – Definitions and Rules of Construction Saturday counts under this definition, even if the lender’s office is closed. A borrower who signs refinance papers on Thursday has one fewer day than they might expect, because Saturday burns a day off the clock.
Eleven federal holidays pause both counts, among them New Year’s Day, Memorial Day, Juneteenth, Independence Day, Thanksgiving, and Christmas. When a holiday falls on a Saturday, the preceding Friday is treated as the holiday for federal purposes; when one falls on a Sunday, the following Monday is observed.2Office of the Law Revision Counsel. 5 USC 6103 – Holidays
How to Count the Three Days
The day the triggering event happens is Day 0. It doesn’t count toward your three days. The clock starts on the next qualifying business day.3Cornell Law School. Federal Rules of Civil Procedure Rule 6 – Computing and Extending Time That rule protects you from losing a day when something happens late in the afternoon.
Consider a mortgage rescission example. Disclosures are delivered and the loan closes on Friday, June 1. Using the broader definition (Saturday counts, Sunday doesn’t):
- Saturday, June 2 — Day 1
- Sunday, June 3 — skipped
- Monday, June 4 — Day 2
- Tuesday, June 5 — Day 3; the window closes at midnight
The right to cancel ends at midnight Tuesday.4Consumer Financial Protection Bureau. 12 CFR Part 1026 Regulation Z – Section 1026.23 Right of Rescission
Now run the same Friday event under the general definition, where only Monday through Friday count. Saturday and Sunday both drop out. Monday is Day 1, Tuesday is Day 2, Wednesday is Day 3. That extra day is why identifying the correct definition upfront matters so much.
Holidays That Fall Inside the Window
A federal holiday landing inside the three-day period simply doesn’t count. If a trigger starts the clock on a Wednesday and Thursday is Thanksgiving, Thursday is skipped. Whatever day Thursday would have been shifts forward, and the deadline lands one day later than it otherwise would.
When the Last Day Falls on a Weekend or Holiday
If the third day would land on a weekend or federal holiday, the deadline extends to the next available business day.3Cornell Law School. Federal Rules of Civil Procedure Rule 6 – Computing and Extending Time This extension is standard across federal court rules and consumer financial regulations. You don’t lose time because a deadline happened to fall on Christmas.
When Exactly the Deadline Expires
For mortgage rescission, the deadline is midnight on the third business day, not 5:00 PM.4Consumer Financial Protection Bureau. 12 CFR Part 1026 Regulation Z – Section 1026.23 Right of Rescission A borrower who mails a cancellation notice at 10:00 PM on the third day is still inside the window.
Other contexts are less generous. Many private contracts define the deadline as close of business, often 5:00 PM at the receiving office. Federal court electronic filings close at midnight in the court’s time zone. When a contract doesn’t specify a cutoff, the safest assumption is close of business at the location where performance is due. For cross-state deals that don’t name a controlling clock, the receiving party’s local time is the conventional default.
How you deliver the notice also matters. For mortgage rescission, placing the notice in the mail, delivering it to the creditor’s place of business, or filing it for electronic transmission all count, as long as it happens before the window closes.4Consumer Financial Protection Bureau. 12 CFR Part 1026 Regulation Z – Section 1026.23 Right of Rescission The IRS uses a similar postmark rule for tax filings: your return is on time if it’s properly addressed, postage-paid, and postmarked by the due date.5Internal Revenue Service. Topic No. 301, When, How and Where to File Many private contracts, by contrast, require actual receipt before the deadline. A letter postmarked on the last day but received a week later won’t count. Read the agreement to see whether postmark or receipt controls.
Where Three-Business-Day Deadlines Show Up
The FTC Cooling-Off Rule
If a salesperson comes to your home and sells you goods or services worth $25 or more, you have three business days to cancel for any reason.6Federal Trade Commission. Cooling-Off Period for Sales Made at Home or Other Locations For sales at temporary locations like hotel conference rooms, convention centers, or fairground booths, the threshold is $130.7eCFR. 16 CFR Part 429 – Rule Concerning Cooling-Off Period for Sales Real estate, insurance, and securities sales are excluded, as are deals done entirely by phone or mail. The seller is required to give you a cancellation form at the time of sale; if they didn’t, write your own letter and send it certified mail.
Mortgage Rescission
Federal law gives borrowers three business days to cancel certain home-secured loans after closing. It applies to refinances, home equity loans, and home equity lines of credit, but not to the mortgage used to buy the home in the first place.8Office of the Law Revision Counsel. 15 USC 1635 – Right of Rescission as to Certain Transactions The clock starts from the latest of three events: closing, receiving all required financial disclosures, or receiving the rescission notice.4Consumer Financial Protection Bureau. 12 CFR Part 1026 Regulation Z – Section 1026.23 Right of Rescission This is the context where Saturday counts. A borrower who closes on Wednesday has until midnight Saturday to cancel, not Monday.
Mortgage Disclosure Delivery
Under the TILA-RESPA Integrated Disclosure rules, a lender must deliver or mail a Loan Estimate no later than three business days after receiving your application.9eCFR. 12 CFR 1026.19 – Certain Mortgage and Variable-Rate Transactions This deadline uses the general business-day definition, so Saturday typically does not count here.
What Happens If You Miss It
If you miss a three-business-day cancellation window, you generally lose the right to cancel. The FTC Cooling-Off Rule and TILA rescission right are both use-it-or-lose-it protections. Once midnight passes on the third business day, the contract binds and your leverage is gone. No court will extend the deadline because you miscounted.
The consequences flip when a business is the one that missed something. If a lender never delivers the required rescission notice or material disclosures, the borrower’s three-day window doesn’t simply close. The right to rescind extends to three years after closing, or until the borrower sells or transfers the property, whichever comes first.10eCFR. 12 CFR 1026.23 – Right of Rescission For door-to-door sellers, failing to provide the cancellation form is itself a violation, and the practical effect is similar: without proper notice, the cancellation window may never have started.
How to Protect Yourself
The most common counting mistake is treating the trigger day as Day 1. It’s Day 0. If you close on a refinance Wednesday and start counting from Wednesday, you’ll think your deadline is Friday when it’s actually Saturday. That one-day error wipes out a third of your window.
Keep a paper trail. Certified mail with a return receipt gives you a postmark proving when you sent the notice and a signature proving delivery. For mortgage rescission, you can also hand-deliver the notice to the lender’s office; get a stamped or signed copy confirming the date and time. Electronic submissions work, but save the confirmation email or a timestamped screenshot.
When a contract or regulation doesn’t specify which business-day definition applies, default to the narrower one — Monday through Friday, excluding federal holidays. That gives you the most conservative count and the smallest chance of missing the deadline. For mortgage rescission, remember Saturday counts and plan accordingly.