No, you do not have to write the word “Dollars” on a check. On virtually every standard check printed in the United States, “Dollars” is already pre-printed at the right end of the long amount line. Your job is to fill in the value: spell the amount in words on that line and enter the matching figure in the small box with the dollar sign to its right.
What You Actually Write on the Amount Line
Start at the far left edge of the line and write the dollar amount in plain English, then add the word “and” followed by the cents expressed as a fraction over 100. For a payment of $1,250.75, you would write: One thousand two hundred fifty and 75/100. The pre-printed “Dollars” at the right end of the line completes the instruction to the bank.
Even when the amount is a round number with no cents, include “and 00/100” so no one can add digits after your entry. A check for exactly $500.00 should read: Five hundred and 00/100. That fraction format is the standard banking convention for expressing cents on the written line, and it keeps the value unambiguous.
Why “Dollars” Is Already Printed
Under the Uniform Commercial Code, a check qualifies as a negotiable instrument only if it promises to pay “a fixed amount of money.”1Cornell Law School. Uniform Commercial Code 3-104 – Negotiable Instrument The currency has to be identified somewhere on the document. Check manufacturers handle that by printing “Dollars” on the amount line, so you never have to write it yourself.
If you are using a non-standard or handwritten check that does not have pre-printed currency text, that is the one situation where you would need to write “Dollars” (or the applicable currency) yourself to meet the fixed-amount requirement.
What Happens if the Currency Word Is Missing
A check that is missing information, including the currency designation, is treated as an “incomplete instrument” under the Uniform Commercial Code. An incomplete instrument can still be enforced once the missing information is filled in, and if the addition is authorized by the person who signed it, the check is treated the same as one that was complete from the start.2Cornell Law School. Uniform Commercial Code 3-115 – Incomplete Instrument In practice, a bank presented with a U.S. check drawn on a U.S. account will assume the amount is in U.S. dollars, but leaving the currency off creates unnecessary risk of rejection or delay.
The Numeric Amount Box
The small rectangular box on the right side of the check has a pre-printed dollar sign and is where you enter the payment amount as a number, for example, $1,250.75. Bank tellers and automated scanning equipment read this field first for quick processing. The digits here should match exactly what you wrote in words on the amount line.
Automated systems use optical character recognition to read the numeric box and sort large volumes of checks quickly. Despite its practical importance for speed, the numeric box is not the final word on the check’s value. That role belongs to the written amount line.
When the Words and the Number Disagree
If the number in the box says $125.00 but the written line says “One hundred fifty-two and 00/100,” the bank follows the words. The Uniform Commercial Code sets a clear hierarchy: words prevail over numbers, and handwritten terms prevail over both typewritten and printed terms.3Cornell Law School. Uniform Commercial Code 3-114 – Contradictory Terms of Instrument Spelling out an amount takes more deliberate effort than jotting digits, so the words are treated as the more reliable version.
Banks rely on this rule to resolve discrepancies without having to call you for clarification. A mismatch can also be a red flag for potential alteration, so tellers are trained to look for it.4Office of the Comptroller of the Currency. Check Fraud: a Guide to Avoiding Losses The simplest way to avoid the issue is to confirm both entries match before handing over the check.
Protecting the Amount Line From Alteration
Empty space on the amount line is an invitation for someone to alter a check. A criminal who intercepts a check with room to spare can add words or digits to inflate the value. The Office of the Comptroller of the Currency recommends avoiding large blank spaces on both the written amount line and the numeric field.4Office of the Comptroller of the Currency. Check Fraud: a Guide to Avoiding Losses
To protect yourself, start writing at the far left of the amount line and draw a horizontal line through any remaining space between your last word and the pre-printed “Dollars.” In the numeric box, place the number as far right as possible so no one can squeeze an extra digit in front of it. Many check manufacturers also use security inks that react with common chemical solvents, distorting the paper if someone attempts to erase or modify what you wrote.4Office of the Comptroller of the Currency. Check Fraud: a Guide to Avoiding Losses
If You Make a Mistake While Writing the Amount
If you slip while filling out the amount line, the safest course is to void the check entirely and start fresh. Banks may refuse a check with visible corrections, cross-outs, or overwritten text because those changes look similar to fraudulent alterations. A teller trained to watch for mismatched amounts or modified text has no easy way to tell a legitimate correction from tampering.
To void a check, write “VOID” in large capital letters across the front using blue or black ink. Make the letters large enough to cover the center of the check, but leave the routing and account numbers along the bottom visible, since you may still need those numbers for setting up direct deposits or automatic payments. Record the voided check number in your register so it does not create confusion when you reconcile your account later. If you need to dispose of a voided check, shred it or tear it into small pieces, paying special attention to the portion that displays your account and routing numbers.