The real value is choosing a long-lasting trustworthy seal with the material and size that fit its use — online-order routing cashback is just a bonus

A seal is a "lifetime purchase at life milestones" — the cashback from routing an online order is just a bonus layered on top of the right choice

A registered seal (jitsuin), bank seal (ginkoin), everyday seal (mitomein), and corporate seal are typically made just once at major life events — a new job, marriage, home purchase, or starting a business — and are not replaced frequently. That is precisely why the decision of "which one to get" must be driven by purpose and quality first, not points or price. Whether to route via a points site when ordering online comes afterward. Online seal specialists such as Hanko-ya.com, Hanko Premium, and Inkan Ichiba offer wide selections and some even support same-day shipping. When these shops are routing-eligible on a points site, you earn cashback simply by routing through before you order.

There is an order you must never reverse in seal point-earning: "Choose the right seal → route when ordering → earn payment cashback." Choosing material, size, and shop based solely on price or routing rate risks ending up with a seal that doesn't meet seal-registration rules, is too fragile and chips, or can't be used for important contracts. A registered seal is your legal "proof of identity" that you will use for decades after registration. The criteria for choosing it are purpose, material, size, and a trustworthy shop — points are purely a bonus on top. This article covers seal types, materials, size rules, the role of seals in the era of digital stamping, and fraud warnings, then walks through the steps for earning points via online orders. For new-life preparation in general, see the new-life guide; for new working adults, the new-working-adult guide; for home purchases, the real-estate & apartment guide.

Registered, bank, everyday, and corporate seals — different uses, different required specifications

Treat each seal type individually: understand the purpose and required specs before ordering. Even though they are all "hanko," a registered seal, bank seal, and everyday seal serve completely different roles, and the choice of material, size, and font changes accordingly.

"Using an everyday seal as a registered seal" is risky. A registered seal must meet registration rules, and a seal that cannot be registered cannot be used for important contracts. Using the same seal as both registered and bank seal is also high-risk; financial institutions recommend making them separately. Many people starting a new job or new life need only an everyday seal at first, but prepare a registered seal and bank seal before buying a home, getting married, or starting a business so you are not scrambling at the crucial moment.

Knowing concretely the situations where a registered seal actually becomes necessary helps you see when to prepare. Typical ones are buying or selling a house or land, buying or transferring ownership of a car, signing various loans, and inheritance procedures. For buying a car especially, registering an ordinary vehicle (excluding light cars) often requires a registered seal and a seal certificate, so preparing the seal in advance to match the delivery schedule makes the procedure smooth (for points play on buying and maintaining a car, see the Auto guide too). Such situations often "become necessary suddenly," so making your registered seal and bank seal together at a milestone like employment, marriage, or moving means you won't be flustered when it matters.

Materials (boxwood, black buffalo horn, titanium) and size rules — the axes of a lifetime choice

Choose seal materials based on the balance of durability, feel when pressing, and price. For an everyday seal or casual use, a lower-cost material is fine, but for a registered or bank seal — which you press rarely but need to last — "no chipping or warping for decades" is what matters.

Size rules: For seal registration, most municipalities require the side or diameter to be between approximately 8 mm and 25 mm (varies by municipality). Conventional sizes are 16–18 mm for registered seals, 13.5–15 mm for bank seals, and 10.5–12 mm for everyday seals, but always verify your municipality's bylaws. Fonts with low legibility — tensho-tai (seal script) and insou-tai — are commonly chosen for registered and bank seals. Ready-made seals (sanmonban) and fonts that are too easily readable may be rejected at registration.

Ordering via online shops (Hanko-ya.com, etc.) — combining same-day shipping, selection, and points earning

Compared to street-corner seal shops, online-specialist seal stores offer a wider range of materials, fonts, and sizes, and prices are easier to compare. Multiple shops such as Hanko-ya.com, Hanko Premium, Inkan Ichiba, and Hanko Hyakkaten each have their own strengths in same-day shipping availability and material range. When you need one urgently, choosing a shop with "same-day shipping / next-day delivery" lets you meet tight registration deadlines.

When these shops are routing-eligible on a points site, route via a points site (such as Pointnavi) before ordering to receive cashback proportional to your purchase amount. Ordering a set of registered, bank, and everyday seals in one order increases the total and therefore the routing cashback. Paying with a cashback-earning credit card or QR-code payment stacks routing cashback and payment cashback together.

However, always confirm before ordering that the shop is routing-eligible on the points site and that there are no restrictions on the target products (materials, product categories). Cashback rates and routing conditions change over time, so check the latest offer information on Pointnavi before routing. Beyond price, also check the shop for engraving method (machine-carved or hand-carved), anti-counterfeiting measures, shipping costs, and return policy.

For points-earning on stationery and seals more broadly, see the stationery & office guide; for photo prints and milestone keepsakes, see the photo & print guide; for the wedding milestone overall, see the wedding & matchmaking guide.

Seal registration procedure and rules — what to confirm before using a registered seal

A registered seal only has legal force after it has been "registered." Registration is done at your municipal office. Once registered, you can obtain a "seal certificate" (inkan shomeisho) to use as proof of identity for important contracts involving real estate, vehicles, loans, and inheritance.

• Registration conditions (common across most municipalities): Residents aged 15 and older. The owner must appear in person, or a proxy with a letter of authorization. A clear impression with side/diameter roughly between 8 mm and 25 mm. Ready-made seals, rubber stamps, and easily deformable materials are not eligible. Most municipalities require the seal to bear a name or surname + given name (company names or symbols only are typically disqualified).
• Procedure: Bring a photo ID (My Number card, driver's license, etc.) and the seal you want to register to the municipal office → fill out the application → receive a registration certificate (inkan toroku card) → obtain a seal certificate separately when needed.
• Obtaining a seal certificate: Available at the municipal office or at a convenience store when needed. With a My Number card, you can get one at a convenience store for a fee of a few hundred yen. Required for real estate transactions, car purchases, and loan applications.
• When you move: Changing your registered address cancels your seal registration automatically. Re-register at your new municipality after moving.

When ordering online, cross-check the shop's listed size and font information against your municipality's rules to confirm "will this seal meet registration requirements" before ordering. Having to remake a non-compliant seal means paying twice.

Once you've registered your seal, also get a handle on how to obtain and handle the seal certificate. Besides the municipal counter, if you have a My Number card you can obtain the seal certificate at a convenience-store multi-copier, saving a trip to the counter. What to watch is that a seal certificate has a validity condition the submission destination requires, like "issued within X months" (it varies by transaction and destination). Obtaining it too early can mean re-getting it after it expires, so obtaining it right before the procedure you need it for is the basic. Also, since a seal certificate is an important identity document, dispose of unneeded copies properly, and storing your registered seal and the certificate separately so they aren't misused together is reassuring.

Fraud, mass-produced seals, and digital stamping — registered seals remain essential even in the paperless era

With the spread of electronic signatures and digital stamps, "going seal-free" is advancing for everyday confirmations and internal documents. But situations that require a physical registered seal plus a seal certificate — real estate registration, inheritance, collateral registration, financial-institution procedures, and more — still demand a physical seal. Digital stamps improve convenience for everyday confirmations and internal approvals, but for legally binding contracts, physical seal certificates are still widely required, and the elimination of registered and bank seals is still some way off.

Pitfalls to watch for when ordering seals online:

• Attempting to register a mass-produced ready-made seal: Sanmonban (cheap off-the-shelf seals) and other ready-made seals are refused by most municipalities because "the same impression exists in large numbers." Always order a one-of-a-kind engraved seal.
• Counterfeiting and duplication risk with ultra-cheap seals: Shops that skip manual craftsmanship at extremely low prices may handle impression data poorly. For registered and bank seals, confirm how impression data is handled and order from a trustworthy shop.
• Shops with vague material descriptions: Some shops label materials ambiguously (e.g., "hon-tsuge" or "Satsuma-tsuge") while actually using cheaper substitutes. Choose shops with specific material descriptions and a clear return policy.
• Confusing a digital stamp with a registered seal: A digital stamp (an image placed on a document) has different legal force from a physical registered seal. Electronic contracts require an electronic signature under the Electronic Signatures Act — not the same as placing an image. Always confirm the correct use for your situation.
• Confusing corporate square and round seals: A company's representative seal (round) is used for registration filings; the company seal (square / kaku-in) is for invoices and quotations — they are different things. When buying a set, confirm the purpose and assemble accordingly.

People considering going independent or starting a business should also consider a corporate seal or a sole-proprietor trade-name seal early. When establishing a company, a set of representative's seal (round seal), bank seal, and square seal is the basic, prepared to match the registration-application schedule. On the other hand, when opening as a freelancer or sole proprietor, a personal registered seal is often enough, but having a trade-name seal (a square seal or rubber stamp with the trade name) is handy for issuing invoices and estimates. There's a lot to do when opening, and seals tend to be put off, but they can suddenly become necessary at contract or billing moments, so getting them ready early as part of opening prep is reassuring. For freelance and sole-proprietor preparation in general, see the Freelance & Sole Proprietor Guide too.

Steps for earning points on seals

1. ① Organize what seals you need and what they are forDetermine which of registered, bank, everyday, or corporate seal you need, whether you plan to register, and whether it is urgent. Ordering everything together at a life milestone (new job, marriage, home purchase) is efficient. See also the new-life guide.
2. ② Confirm material, size, font, and registration rulesIf you need a registered seal, confirm your municipality's seal-registration rules (size, font, no ready-made) in advance. Choose material by purpose and durability (black buffalo horn or titanium is reassuring for registered and bank seals). Tensho-tai or insou-tai font is conventional.
3. ③ Check routing-eligible shops on the points siteOn Pointnavi, check the routing offers and cashback rates for Hanko-ya.com and similar shops. Confirm whether target products have any restrictions. Rates and conditions change, so always check before purchasing.
4. ④ Select material, font, and size, then complete the order via the points siteRoute through the points site, then go to the shop. Confirm engraving method, lead time, shipping cost, and set discounts before finalizing. If you need it urgently, choose a shop with same-day shipping.
5. ⑤ Pay with a cashback-earning payment methodPay with a cashback credit card or QR-code payment to stack routing cashback and payment cashback. See also the tap-payment guide.
6. ⑥ After receiving it, complete the seal-registration procedureIf using it as a registered seal, bring your photo ID and the seal to your municipal office. Once registered, you can obtain a seal certificate whenever needed. See also the real-estate & apartment guide.

Mini glossary — key terms for choosing a seal

Knowing the terminology around seal "types and uses" and "registration and fonts" is enough to avoid the mistake of ordering a seal that cannot be registered. Run through these before you place an order.

With these terms in hand, you can prioritize "purpose, material, size, and a seal that meets registration rules" before thinking about "price and cashback rate." Confirm your municipality's registration rules, then order from a trusted specialist shop via Pointnavi — that is the gold standard for seal point-earning. Ordering a set of registered, bank, and everyday seals also increases the absolute cashback amount.

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