The over signature line on a check is the strip of pre-printed text sitting directly above where the account holder signs, and it usually carries a restrictive legend such as “Not Valid Over $500.00,” “Void After 90 Days,” or “Requires Two Signatures.” Businesses print these to control internal spending and discourage fraud. Legally, though, they’re weaker than they look: under the Uniform Commercial Code, a check is an unconditional order to pay, and a bank that processes a check exceeding the printed limit generally has no liability unless a separate account agreement says otherwise.
Where It Sits and What It Says
The signature line is the horizontal line in the bottom-right area of a check. The narrow space immediately above it, physically separate from the memo line on the left and the “Pay to the Order of” line higher up, is where many business checks print a restriction. The placement is deliberate. Anyone signing sees the restriction right before putting pen to paper.
The common legends fall into three groups:
- Dollar caps, like “Not Valid for More Than $1,000”
- Time limits, like “Void After 90 Days” or “Void After 180 Days”
- Authorization requirements, like “Requires Two Signatures” or “Two Signatures Required Over $5,000”
These are sometimes called restrictive legends. They work better as signals to employees than as commands to the bank, and that distinction is where most of the confusion starts.
Why the Bank Usually Isn’t Bound
A printed dollar limit above the signature line does not, on its own, obligate the bank to reject checks that exceed it. The reason is structural. Under UCC Article 3, a check has to be an unconditional order to pay a fixed amount of money. If a legend printed on the check genuinely made payment conditional, the instrument could stop qualifying as a negotiable instrument at all.
UCC Section 3-106 defines when a promise or order becomes conditional: it has to state an express condition, make the order subject to another record, or tie rights and obligations to a separate document.1Cornell Law School. UCC 3-106 – Unconditional Promise or Order A line reading “not valid over $500” sits in an awkward legal space. Treated as a true condition, it threatens negotiability. In practice, banks and courts tend to read these legends as internal instructions from the business to its employees rather than enforceable conditions binding the paying bank.
The UCC’s treatment of conditional endorsements reflects the same posture: a condition stated in an endorsement doesn’t affect the holder’s right to enforce the instrument, and a person paying may disregard the condition. The provision is about endorsements, not pre-printed legends, but it captures the broader stance. Conditions written on negotiable instruments carry limited power to override the instrument’s unconditional nature.
When the Bank Actually Can Be Bound
The printed legend alone won’t do it. A separate account agreement can. Under UCC Section 4-401, a bank may charge the customer’s account only for items that are “properly payable,” meaning authorized by the customer and consistent with any agreement between the customer and the bank.2Cornell Law School. UCC 4-401 – When Bank May Charge Customer’s Account If the account agreement explicitly incorporates the check’s dollar limit or dual-signature requirement, a bank that ignores those restrictions could be paying an item that isn’t properly payable.
UCC Section 4-103 lets banks and customers modify the default UCC rules by agreement, with the limit that neither side can disclaim the bank’s responsibility for acting in bad faith.3Cornell Law School. UCC 4-103 – Variation by Agreement; Measure of Damages So the real question isn’t what the check says. It’s what the account agreement says. A business that wants its bank to actually reject over-limit checks needs that obligation written into the banking relationship, not just onto the check stock.
Modern check processing cuts the other way too. Banks read the MICR line at the bottom of the check to capture routing, account, and check numbers, and automated systems verify the dollar amount without interpreting small-print text above the signature line. Manual review happens for unusually large amounts, suspected fraud, or items flagged through positive pay. A $600 check with a “Not Valid Over $500” legend will clear alongside thousands of other items without anyone reading the fine print.
Void-After Dates
Legends like “Void After 90 Days” are meant to push recipients to deposit promptly, but they don’t automatically kill the check when the date passes. The UCC default under Section 4-404 is that a bank has no obligation to pay a check presented more than six months after its date, but it may still do so in good faith.4Cornell Law School. UCC 4-404 – Bank Not Obliged to Pay Check More Than Six Months Old
A check printed with “Void After 90 Days” can legally be processed at day 120 with no consequence to the bank, because the six-month window hasn’t closed. Even past six months, the bank is permitted to pay in good faith. The printed shorter deadline doesn’t bind the bank without a backing account agreement. U.S. Treasury checks are the exception: federal law makes them valid for one year after the issue date, and that carries actual legal force.
Dual-Signature Requirements
“Requires Two Signatures” is a common legend aimed at keeping any single employee from authorizing a large payment alone. As internal control, it works reasonably well: employees know the policy and the consequences of breaking it.
As an instruction to the bank, the picture is murkier. UCC 3-106(c) addresses countersignature requirements as a type of condition that doesn’t destroy negotiability, but whether the bank must actually verify the second signature comes back to the account agreement. Most standard business checking agreements don’t obligate the bank to count signatures, and given processing volumes, banks rarely do. An organization that genuinely needs dual-authorization enforcement has to negotiate that obligation into its banking contract.
What It Means If You Receive the Check
If someone hands you a check with “Not Valid Over $500” printed above the signature line and the check is written for $500 or less, there’s nothing to worry about. If the check amount exceeds the printed limit, your bank will usually still process it. The paying bank has no legal obligation to reject it, and your depositing bank has even less reason to care about the drawer’s internal controls.
The legend can, however, affect your status as a holder in due course. Under UCC Section 3-302, a holder qualifies for those special protections only if the instrument doesn’t bear apparent evidence of irregularity that calls its authenticity into question.5Cornell Law School. UCC 3-302 – Holder in Due Course A check written for $2,000 with “Not Valid Over $500” printed on it could be irregular enough to put you on notice. If a dispute arises later, you might not get the protections a holder in due course would normally enjoy. For routine transactions the risk is low. For large or unusual payments, flag the discrepancy with the issuer before you deposit.
What Actually Enforces Limits
If printed legends are mostly symbolic, what works? The strongest tool available to businesses is positive pay, a service most commercial banks offer. The business uploads a file of every check it issues, including check number, dollar amount, and payee name. When a check is presented, the bank compares it against the file, and any mismatch triggers an alert the business can approve or reject before the item clears.
Positive pay does electronically what the printed legend only gestures at: it creates a verification system where the bank is contractually obligated to flag discrepancies. ACH positive pay extends the concept to electronic debits, with rules around transaction amounts, approved originators, and spending caps. Modern check-printing software can also standardize templates, integrate with accounting systems, and pair with positive pay enrollment. The printed legends remain useful as signals to employees, but the enforcement backbone has moved digital.