mail box rule

(redirected from Mailbox rule)
Also found in: Financial, Wikipedia.

mail box rule

n. in contract law, making a written offer or acceptance of offer valid if sent in the mail, with postage, within the time in which the offer must be accepted, unless the offer requires acceptance by personal delivery on or before the specified date. The rule may also apply to mailing payments of insurance premiums when due. However, relying on this so-called "rule" can be dangerous, since the party awaiting the acceptance or payment may cancel the offer if there is no response in hand when the time runs out.

References in periodicals archive ?
The common law mailbox rule would not prove Maine Medical's request was timely because the rule does not apply unless a document has been mailed in sufficient time to be received by the due date in the ordinary course of post office business.
After researching the relevant case law, we were able to successfully argue that the mailbox rule should not apply in a situation where the plaintiff claimed to have used certified mail with return receipts available.
With a late tax return showing a tax underpayment, the mailbox rule is inapplicable.
The court found that the statutory mailbox rule (Sec.
Note that the IRS does not apply the mailbox rule to returns reporting additional tax that are mailed near the end of the limitation period--in this case, timely mailing does not equal timely filing.
Postal Service continues to qualify for the statutory mailbox rule under Sec.
Moreover, because the original return is late, the mailbox rule did not apply to it (and, implicitly, to the refund claim).