Contract signing authority, seals and electronic signatures
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Something easy to overlook once contract review is done is the signing process itself. Who actually signs, whether a seal is needed, whether an electronic signature is enough: leaving these questions open tends to surface as a problem only after signing. Signing is not just an administrative step. It is the process by which the company formally accepts the contract, and it connects to a later audit, a debt-collection dispute or an M&A due diligence review. This article works through what to check at signing, from authority and seals through electronic signatures.
Signing settles the terms as the company's own
Signing is the point at which the parties finally agree on the contract's terms and take some step to record that agreement. Under Japan's Civil Code, a contract generally forms through offer and acceptance, and a written document or seal is not always required. In practice, though, companies commonly document their agreement by signing and sealing a paper contract or executing it through an e-signature service. Three things matter here: the content is finalized as the last version, someone with actual authority to bind the company is involved, and the signed contract can be found again later. If any of these breaks down, the contract may still exist, but it becomes hard to explain internally or externally, and who actually has signing authority is one of the points most often overlooked in practice.
Confirm the signer's actual authority
The first thing to check at signing is the signer's authority. A representative director signing for the company is straightforward, but in practice a department head, a business unit lead or a branch manager sometimes signs instead, and with an e-signature, whose account sent or approved the document becomes the record of that authority. Internally, this means checking the authority rules, approval rules and the e-signature operating rules, with particular attention where the amount is large, the term is long, it auto-renews, it creates significant liability, it involves IP or personal data, it touches exclusivity or non-compete, or it connects to a Companies Act resolution such as an investment agreement or M&A contract. A signer's title can look convincing without the actual internal authority behind it, and how the signer appears to the counterparty as representing the company matters just as much, since that becomes a dispute point later if it turns out otherwise.
Whether a seal is needed depends on the deal
Sealing contracts has a long history in Japanese business practice, and even with e-signatures now common, whether a seal is still needed is a frequent question. A contract without a seal is not automatically invalid, since a contract generally requires no particular form. That said, a seal carries real evidentiary weight, and for a large, long-term or dispute-prone contract, keeping a clear record of the seal or e-signature is worth the effort. Rather than relying on habit, it helps to work backward from what evidence the company actually wants: whether the law requires a signature for this contract, whether the counterparty is asking for a seal, whether internal rules require one, whether an e-signature leaves sufficient evidence on its own, and how stamp duty applies. Where an e-signature is used instead, keeping the approval flow, the completion notice and how the original data is stored in order makes signing easier to explain later, since there is no physical seal to point to.
Avoid signing the wrong version
A common mistake at signing is executing the wrong version of the contract: an old file rather than the reviewed one, a counterparty revision that never actually got incorporated, or a file uploaded to an e-signature platform that was not actually final. Worth confirming beforehand: the file name and version, the date of the last edit, whether tracked changes or comments remain, whether appendices or an SOW are attached, whether the term and amount are current, whether the counterparty's name and representative are correct, and whether this matches what internal approval was based on. These checks are unglamorous, but a mistake here is hard to fix afterward, and a careful legal review loses much of its value if the file management at signing breaks down.
Electronic signing needs its own evidence trail
E-signatures make signing considerably faster by cutting out mailing and returning a sealed document, and they work well for remote teams and cross-border deals. But adopting an e-signature tool does not automatically put contract management in order. Worth confirming: who can send and approve a document, how thoroughly the signer's identity is verified, where the completed data is stored, whether it connects to the company's contract register, and how renewal and termination deadlines get tracked. An e-signature speeds up signing, but if the company still cannot find a signed contract afterward or track its renewal date, that is not enough on its own, so signing and contract management are worth thinking about together.
Signing authority is also a matter of trust
Signing authority is not only an internal rules question. It is also a question of how the company looks to its counterparty. Whether the person signing actually has authority to bind the company on that deal is a basic part of any transaction, and it is worth checking the source of that authority for a representative director, a department head or an agent, and doing the same for the counterparty's signer where the amount is large or the deal touches M&A or important IP. E-signatures remove the physical seal, so confirming the signer, the email address and the authentication method matters even more, and keeping that confirmation on record avoids a later claim that the signer never had authority. Where a large counterparty signs through a group company or a particular business unit, it is worth confirming that the named party and the actual signer match, since a mismatch tends to create extra work at billing or in a dispute later.