Why blanks worry notaries
If a signature is notarized on a form with important blanks, someone else can fill in the blanks later. A blank dollar amount, a blank name for who receives property, or a blank date can change the meaning of what the signer agreed to.
That is why many notaries are cautious or decline when major parts are empty.
Blanks that are usually fine
Some blanks are not a problem. Optional fields marked not applicable, spaces meant for the recording office, and lines for another party's later signature may be acceptable. The notary looks at whether leaving the blank can alter the signer's commitment.
When a field truly does not apply, write N/A or draw a line through it so nobody can fill it in later.
A good habit is to initial changes. If a number is corrected, the signer can cross it out once and write the new number next to it with their initials.
Blanks that are risky
Be wary of blank names of grantees, blank payment amounts, empty property descriptions and blank dates on affidavits. Also be wary of a signature page with no text on it, because it can be attached to a different document.
In those cases the signer should finish the document first or confirm with the receiving office what is expected.
Notary rules on this point
States treat this differently. Some laws say a notary must not notarize a document with blanks that matter. Others leave it to the notary's judgment. A notary may not fill in the blanks for the signer, because that edges toward giving advice and altering the document.
If a form has an acknowledgment certificate that is itself incomplete, the notary completes only the notarial parts.
How to prepare before the appointment
Read the document through. Fill in every field you know. Put N/A where nothing applies. If you do not know an answer, ask whoever sent the form before the notary arrives, not during the visit.
Bring the full document, not just the signature page, so the notary can see what is being signed.
A short scenario
A buyer brings a vehicle title with the purchase price line empty and asks the notary to stamp it so the seller can fill it in later. The notary should decline, because the signature could be attached to a different price than the one agreed. If both sides are present and the price is written in, the problem goes away.
Another scenario is a medical authorization signed with the recipient line blank. The signer may think nothing of it, but the form could later be sent to anyone. Filling in the recipient first is the safer path.
Common questions
Can the notary fill in a missing date for me?
A notary should not complete the signer's parts of a document. The notary fills in only the notarial certificate.
What if the other party will fill in details later?
That can be a risk. Talk to the receiving office or an attorney, and expect a careful notary to decline until key terms are filled in.
This guide is general information, not legal advice. Fees and procedures change; check with the office involved or an attorney for your situation.