The clause everyone skips
Near the end of most contracts, just above the signature blocks, there is a short boilerplate sentence that reads something like: "This Agreement may be executed in counterparts, each of which shall be deemed an original, and all of which together shall constitute one and the same instrument." People skim past it on the way to signing. It is one of the most quietly important sentences in the whole document, and it is the legal foundation for how electronic signing works.
This article explains what a counterparts clause does, why it matters far more now that signing happens over email, and how to run a clean multi-party execution. It is general guidance, not legal advice — the wording and effect of a counterparts clause depend on the contract and the jurisdiction, so confirm your position with a qualified attorney.
What "in counterparts" actually means
To execute in counterparts means the parties do not all sign the same physical piece of paper. Instead, each party signs a separate but identical copy, and the separate copies are treated together as a single agreement. Two counterparts, each signed by one party, add up to one fully executed contract.
Historically this solved a logistics problem. If a buyer was in New York and a seller in London, mailing one master copy back and forth to collect wet-ink signatures took weeks. The counterparts clause let each side sign their own copy locally and exchange the signed pages, so the deal closed on the day the last signature landed rather than the day the courier finally returned.
The clause does two jobs. It confirms the parties intend separately signed copies to form one contract, and it confirms that each signed copy counts as an original rather than a mere photocopy. Without it, a counterparty could later argue that because no single document carries every signature, no complete contract was ever formed. The clause forecloses that argument.
Why it matters more, not less, with e-signatures
When you send a document through an e-signature platform, you are executing in counterparts almost by definition. Each signer opens their own session, applies their signature to their own rendering of the document, and the platform assembles the result. In a sequential routing order the signatures stack onto one evolving file; in a parallel send, signers act independently and their marks are merged. Either way, no two people are ever holding the same sheet of paper at the same moment. The counterparts concept is what makes that legally sound.
There is a common misconception that electronic signing somehow sidesteps the old counterparts problem. It does the opposite — it is counterparts, industrialized. That is why the clause belongs in your templates even when everything signs electronically. Under US ESIGN and UETA, and under eIDAS for European counterparties, an electronic signature carries the same legal effect as ink, but the counterparts clause is what ties the separately signed electronic copies into a single instrument. The two doctrines work together: ESIGN and UETA make the electronic mark valid, and the counterparts clause makes the assembled set one contract.
The mixed-signature trap
The scenario that trips people up is a mix of wet ink and electronic signatures on the same deal. One party insists on printing, signing by hand, and scanning; the other signs electronically through your platform. Can those two counterparts still form one contract?
Usually yes — a counterparts clause that also permits signatures delivered "by electronic transmission" or "by PDF" is designed exactly for this. But it introduces a real evidentiary weakness. The electronically signed counterpart arrives with a full audit trail and a tamper-evident certificate proving who signed and that nothing changed. The scanned wet-ink counterpart arrives as a flat image with none of that — no timestamp you can trust, no record of who operated the scanner, no integrity seal. If the deal is ever disputed, you are only as strong as your weakest counterpart.
The practical fix is to route everyone through the same electronic flow whenever you can, so every counterpart carries the same grade of evidence. When a counterparty genuinely must sign on paper, at least capture the scanned page back into your system promptly and store it alongside the executed set, and understand that its evidentiary weight is lower. Do not let the convenience of "just scan it over" quietly downgrade the provability of the whole agreement.
Keeping the executed set clean
Executing in counterparts creates one lasting risk: fragmentation. If each party keeps only their own signed copy, nobody holds the complete, fully executed instrument — and years later, when someone needs to enforce the contract, they discover they have half of it.
A good e-signature platform solves this automatically. Once the last signer completes, it assembles a single final document carrying every signature, seals it, and issues one audit certificate covering the whole transaction. That assembled file is the artifact you archive. A few disciplines keep it defensible:
- Distribute the completed set to every party, not just each party's own page. Everyone should end up holding the same fully executed document.
- Store the assembled original with its certificate, in a searchable repository rather than a folder of email attachments. This is the first principle of contract lifecycle management.
- Never re-collect a missing signature by editing the sealed file. If a signature is missing, that is a routing problem to fix before completion, not something to patch afterward — editing a sealed document breaks the integrity the signature depends on. Use the platform's routing order so the right people sign in the right sequence the first time.
When counterparts and countersigning intersect
Counterparts and countersigning are related but distinct. Countersigning is about who signs last to make the agreement binding — often the party who prepared it accepting the other side's signature. Counterparts is about how the signatures are collected — on separate copies rather than one shared sheet. A typical deal involves both: the initiating party sends the document, the other side signs their counterpart, and the initiator countersigns to close it, with the counterparts clause ensuring the separately signed copies form one contract. Setting an explicit signing order is how you make sure the countersignature genuinely comes last.
The short version
The counterparts clause is boilerplate you should never delete. It is what lets each party sign their own copy and still form a single binding contract — which is precisely what an e-signature platform does every time it collects signatures from people who are not in the same room. Keep the clause in your templates, permit electronic delivery in its wording, route everyone through the same electronic flow so every counterpart carries the same provable evidence, and archive the assembled executed set with its certificate. Do that and executing in counterparts becomes exactly what it was always meant to be: a way to close deals faster without giving up a shred of enforceability. See how routing works or start free.
This article is general guidance on contract execution and e-signatures, not legal advice. The effect of a counterparts clause is fact- and jurisdiction-specific; confirm your agreements with a qualified attorney.