It's not usually easy. US bills are dated by "series" rather than when they were printed. Most of the time, but not always, a series starts when there's a new design, a new Secretary of the Treasury, or new Treasurer. That means the bill can't have been printed any earlier than when the change occurred. The problem is that the same series date is used in following years, and sometimes there's an overlap when one series continues to be printed even after the start of a new one.
If the bill is recent, it may be possible to cross-reference its serial number to an approximate printing date. The Bureau of Engraving and Printing (moneyfactory.com) maintains sets of tables indicating the dates that a particular range of serial numbers was printed.
It's in roughly the same place where the date would be on a modern dollar bill
Any U.S. million dollar bill you might find is only a novelty and is NOT legal tender.
Modern ones have the date on the front to the right of Jefferson's picture.
The U.S. has never printed a one million dollar bill. Any you find are novelties, and aren't worth anything.
No. The largest denomination the U.S. ever printed was $100,000. Any million dollar bill you might find is a novelty only worth its weight in paper.
It's in roughly the same place where the date would be on a modern dollar bill
No, the U.S. has never printed a $1,000,000 bill. Any you might find are novelties, not worth anything.
The U.S. has never printed a $1,000,000 bill. Any you might find are merely novelties, NOT genuine currency.
No. Thomas Jefferson's picture has been on every $2 bill printed since since 1928.
No. The U.S. has never printed a $1,000,000 bill. Any you might find are simply novelties. The largest U.S. bill ever printed was a $100,000 gold certificate, and it was never put into general circulation.
Any U.S. million dollar bill you might find is only a novelty and is NOT legal tender.
Modern ones have the date on the front to the right of Jefferson's picture.
The U.S. has never printed a one million dollar bill. Any you find are novelties, and aren't worth anything.
The U.S. has never printed a $3 bill, so any you may find are merely novelties.
The US never printed a one million dollar bill. Any you find are novelties, and aren't worth anything.
No. The largest denomination the U.S. ever printed was $100,000. Any million dollar bill you might find is a novelty only worth its weight in paper.
It's usually enough to just look at the bill's series date and letter (if any) to get an idea of the year or years when it may have been printed. If you want to know a more specific date within that range the Bureau of Engraving and Printing and other sites have tables that can help match a particular serial number / series date combination with the month in which the bill was printed. In general though, the series date and letter are sufficient to determine a bill's value. Please see the Related Question for more information.