How do I fix a document after it's already been signed?

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Once a document is signed through a proper e-signature tool, the signed version is locked, intentionally. That tamper-evident record, the whole reason the signature means something, only works because nothing can be quietly changed after the fact. So the fix is never "edit the signed PDF," it's one of two different paths depending on what actually needs to happen.

Amend vs void and resend

Void and resend

Voiding cancels the original signed document entirely, as if it never happened, and lets you send a corrected version to be signed fresh. This is the right choice when the mistake is caught early, before the document has started being relied on for anything else (an invoice hasn't been generated off it yet, nobody's started work based on it), and when both parties would agree the first version simply shouldn't count. The downside: you lose the original signed record completely, so if there's any chance the first version matters later, say, to show what was originally agreed before a later change, voiding erases that entirely rather than preserving it alongside the fix.

A formal amendment

An amendment is a separate, short document that explicitly states what's changing in the original agreement, "Section 3's price of $X is hereby changed to $Y, effective [date], all other terms remain in effect," signed by the same parties. This keeps the original signed document intact and creates a second, equally valid signed record showing exactly what changed and when. This is the right choice once work has already started under the original agreement, when you want a clear paper trail of the change itself (useful if the change itself might ever be questioned, "did we actually agree to raise the price, or did someone just change it unilaterally"), or when the document has any ongoing legal weight where erasing the original entirely would be the wrong move.

A rough rule of thumb: if nothing has happened yet based on the signed document and the correction is uncontested, void and resend is simpler. If anything has already happened based on it, or the correction itself could ever be questioned, a formal amendment is the safer, more defensible path.

Keeping a clean record

Whichever path you take, a few habits keep your records clean and defensible:

• Never physically alter the originally signed file. Even for an obviously minor, uncontested error, editing the signed PDF directly in a photo or PDF editor destroys the tamper-evident protection the signature was supposed to provide, which can look far worse later than the original mistake ever did.
• Keep both documents if you void and resend. Most e-signature tools retain a record of a voided document even after voiding it, but confirm this rather than assuming, and keep your own copy separately if there's any chance you'd want to reference what the original said. The audit trail an e-signature tool records is worth saving too.
• State the reason for the change in the amendment itself. A brief line, "to correct a typographical error in the original price" or "to reflect a scope change agreed on [date]," gives anyone reading it later immediate context without needing to go hunting for the backstory.
• Get both parties' signatures on the amendment, not just a one-sided notice. An email saying "just to confirm, the new price is X" isn't the same as a signed amendment, and if the change ever matters, the signed version is what actually protects you. Getting multiple people to sign one document covers the setup when more than two parties are involved.

Tool steps

The general process across mainstream e-signature tools, including QuickSigner, follows the same shape: locate the signed document in your account, select the option to void it (this typically notifies all signers that the document has been voided and is no longer active), then prepare and send a corrected version as a new request if you're going the void-and-resend route. For an amendment, you'd instead create a new, short document referencing the original rather than voiding anything, and send that for signature the same way you'd send any other document. The exact menu labels and confirmation steps vary by tool and change over time, so I'd confirm the current process directly inside your specific account's help section rather than relying on a general description here, especially since this is exactly the kind of action where getting a step wrong (voiding something you meant to amend, for example) has real consequences.

Common mistakes when fixing a signed document

• Panicking and deleting the signed document entirely. Even a document you're about to void should be retained, deleting it outright removes your own record of what was originally agreed, which you may want later even if the document itself is no longer active.
• Voiding without telling the other party why. A voided document notification with no explanation can read as alarming or confusing to a signer. A short note alongside it, "voiding this to fix an error in the price, corrected version coming shortly," heads off any unnecessary concern.
• Treating a verbal agreement to change something as sufficient. A phone call where both sides agree to a new price doesn't carry the same weight as a signed amendment if that change is ever questioned later. Get it in writing and signed, even for a change that feels minor and uncontroversial at the time.
• Not updating anything downstream that referenced the old version. If an invoice, a project plan, or another document already references figures from the original signed version, voiding or amending the contract without updating those creates its own confusion. Check what else points back to the original before considering the fix complete.

A quick worked example

Say a client signs a service agreement listing a $500 monthly fee, but you'd actually quoted $550 and the typo slipped through unnoticed until the first invoice went out. If this is caught within a day or two, before any work or billing has actually happened under the wrong number, voiding the original and sending a corrected version for a fresh signature is simple and clean, nobody's relied on the wrong figure yet. If instead a full month has already passed with work delivered and invoiced at the wrong $500 figure, a formal amendment correcting the fee going forward, explicitly referencing the original agreement and the date the correction takes effect, is the safer path, since it preserves a clear record of what was originally signed, what changed, and exactly when, rather than erasing a month's worth of relied-upon history. The amendment in this case would be short, a single paragraph stating the corrected fee, the effective date, and a line confirming all other terms of the original agreement remain unchanged, signed by both the client and the business.

How I'd approach this

The mistake I'd actually warn a client against isn't picking void versus amendment, it's trying to quietly fix a signed document by editing the file directly, which I still see happen more than people would expect, usually out of a rushed instinct to "just fix the typo" rather than thinking through the proper path. That instinct destroys the exact protection the signature was there to provide. Taking the extra few minutes to void and resend, or draft a short amendment, keeps your records genuinely defensible instead of quietly undermined. For businesses where contract corrections and amendments come up regularly, I build that process into the broader document workflow so it's a clear, repeatable step rather than something improvised under pressure each time. Get in touch if that's useful for how your business operates.