A collector outside Japan cannot submit directly to the NBTHK. You need a licensed Japanese agent or dealer to handle the submission on your behalf. The fee for Hozon (the entry-level certification) is approximately ¥30,000 (~$200), but once you add agent handling, international shipping both ways, and insurance, a realistic budget for an overseas submission is $400–700 all-in. Shinsa sessions run roughly 4–5 times per year in Tokyo. From the day your blade arrives in Japan to the day papers return to you, expect 2–4 months. About 60–70% of submitted blades pass Hozon; that figure drops considerably at higher tiers. Before you submit anything, read this guide cover to cover. The most common mistake is submitting a blade that should never have been sent in the first place.
A collector in Texas emailed us last month asking if he could submit his grandfather's katana to the NBTHK for authentication. His first question: "Do I need to fly to Japan?" The answer is no, but the process has specific rules that most English-language sources get wrong or leave out entirely. This guide covers what those sources miss.
The grandfather's katana is a common scenario. A blade surfaces in an estate, a family wonders if it is the real thing, and someone starts researching NBTHK certification. What they find online is usually either too vague to be useful or confidently wrong about costs, timelines, and eligibility. We have handled submissions like this many times. Here is exactly how it works.
Why Bother With Shinsa at All?
Certification is not just a piece of paper. It is the difference between a blade you cannot sell above a few thousand dollars and one with an international market of serious collectors willing to pay multiples of that. NBTHK certificates are the global standard for nihonto authentication, and the market prices that standard in immediately and measurably.
A Hozon-certified Shinto katana by a named smith typically sells for $4,000–12,000. An equivalent uncertified blade, even one that is genuinely the same quality, struggles to exceed $6,000 because buyers cannot verify what they are paying for. Tokubetsu Hozon pushes that same category to $12,000–40,000. The certification does not create quality; it documents and validates it in a way the market recognizes.
For anyone thinking about nihonto as an investment, certification is not optional. It is the mechanism through which quality translates into liquidity. An uncertified blade is harder to sell, harder to insure at accurate value, and significantly harder to import and export without complications.
If you own a blade you believe is genuine and you plan to sell it, submit it for shinsa. If you are buying a blade without certification, price the submission cost into your offer.
Who Can Submit: The Agent Requirement
Overseas collectors cannot submit directly to the NBTHK. This is the first thing most English guides get wrong by omission. The NBTHK requires that submissions come through a member or licensed intermediary based in Japan. In practice, this means a dealer, a registered sword society member, or a specialist agent who has an established relationship with the organization.
This is not an arbitrary bureaucratic hurdle. The NBTHK operates within Japanese cultural property law. All registered nihonto in Japan carry a Token Toroku-sho (刀剣登録証, government registration card), and legal responsibility for that documentation sits with the Japanese party handling the submission. An overseas collector cannot legally be that responsible party.
What this means for you practically: find a reputable Japanese dealer or agent before you do anything else. They will handle the paperwork, transport the blade within Japan (or receive it from you), complete the submission forms, and receive the result on your behalf. Their handling fee is on top of the NBTHK's submission fee, and both are non-refundable regardless of result.
We assist collectors with shinsa submission through our sourcing network. If you have a blade you are considering submitting, contact us through our collection page and we can advise whether the submission makes sense before any money is committed.
The Submission Process, Step by Step
Here is the actual sequence, from the moment you decide to pursue certification to the moment papers arrive back in your hands.
Step 1: Pre-submission assessment
Before anything is sent anywhere, have your blade assessed by someone who knows what they are looking at. A good agent will do this as part of their intake process, but if yours does not, insist on it. You are looking for basic eligibility: is the blade genuine nihonto, is there visible damage that would cause automatic disqualification, has it been altered in ways that affect certification eligibility? This assessment can save you several hundred dollars in submission fees and shipping costs if the blade is not a viable candidate.
Understanding what constitutes a true nihonto is worth doing before this stage. Not every Japanese-made sword qualifies. Gunto (military production swords) made on industrial equipment, for example, are generally not eligible for the higher certification tiers.
Step 2: Export from your country
If the blade is outside Japan, it needs to enter Japan legally. Japan allows the import of antique swords for the purpose of shinsa under specific conditions, but the documentation requirements are strict. Your agent will advise on what paperwork is needed. You will typically need to declare the sword explicitly as an antique sent for appraisal, not as a purchase or sale. Pack the blade correctly. A bare blade in inadequate packaging that arrives damaged is your problem, not the shipping company's, and it can affect the submission outcome.
Step 3: Japanese registration
Once in Japan, the blade may need to be temporarily registered through the Board of Education (Kyoiku Iinkai) if it is entering the country without a pre-existing Token Toroku-sho. Your agent handles this. It is a legal requirement, not optional. The Token Toroku-sho must accompany the blade through the entire shinsa process and return with it afterward.
Step 4: Submission to the NBTHK
Your agent completes the official submission forms and pays the submission fee. The forms require basic blade information: type (katana, wakizashi, tanto), approximate length, whether the blade is signed or unsigned, and what level of certification is being sought. The agent then physically delivers the blade to the NBTHK at the designated shinsa location, typically in Tokyo.
Step 5: Shinsa (the appraisal session)
The blade waits until the next scheduled shinsa session. The NBTHK holds these approximately 4–5 times per year. If you submit between sessions, your blade waits. There is no queue-jumping and no way to expedite. The blade is examined by a panel of judges. You are not present. Your agent is not present. The judges work through submitted blades systematically, and their decision is final for that submission cycle.
Step 6: Results and certificate issuance
Results are communicated to the submitting agent. If the blade passes, the NBTHK issues the origami (折紙, the certificate) at the next available issuance session, which may be separate from the shinsa session. If the blade fails, it is returned without papers and without an explanation of why. That last point matters: the NBTHK does not issue written rejection reasons. Your agent may have connections that allow them to get informal feedback, but there is no formal appeals process and no official explanation.
Step 7: Return shipping
Your agent ships the blade back to you, along with the certificate if it passed and the Token Toroku-sho. International shipping of nihonto requires proper export documentation from Japan. Your agent handles this, and the cost is typically part of their handling fee or billed separately. Budget for it either way.
Real Costs: Fees, Shipping, and Agent Charges
Here are the actual numbers. Most English sources either omit these entirely or give outdated figures.
| Cost Item | Hozon | Tokubetsu Hozon | Juyo Token |
|---|---|---|---|
| NBTHK submission fee | ~¥30,000 (~$200) | ~¥45,000 (~$300) | ~¥80,000 (~$530) |
| Agent/dealer handling fee | $200–500 | $200–500 | $300–700 |
| International shipping to Japan (insured) | $100–250 | $100–250 | $150–300+ |
| Return shipping from Japan (insured) | $100–200 | $100–200 | $150–300+ |
| Realistic total (overseas) | $400–700+ | $600–900+ | $1,100–1,800+ |
A few things to note about these numbers. The NBTHK submission fee is set by the organization and unlikely to vary between agents. The agent handling fee varies considerably depending on who you use and what services are included. Some agents bundle return shipping into their fee; others bill it separately. Ask for a complete itemized estimate before agreeing to anything.
For Juyo Token, there is an additional wrinkle. A blade cannot be submitted for Juyo directly. It must first hold Tokubetsu Hozon status, and it is typically nominated for Juyo consideration by the NBTHK itself after being recognized at Tokubetsu Hozon level. The ¥80,000 fee applies when the formal Juyo submission occurs. At this tier, the costs are a small fraction of the blade's value, so they matter less than the eligibility question.
None of these fees are refunded if the blade fails. Budget for the possibility of a failed submission when you are deciding whether the economics make sense.
Shinsa Schedule and How to Plan Around It
The NBTHK holds shinsa sessions approximately 4–5 times per year, primarily in Tokyo. Occasional regional sessions are held outside the capital, but Tokyo is the standard venue. The NBTHK publishes its annual shinsa schedule, and your agent will know the upcoming dates.
The practical implication: if you miss the submission deadline for a given session, your blade waits for the next one. Submission deadlines are typically several weeks before the actual shinsa date. If you are working toward a specific timeline, discuss this with your agent early. Sending a blade to Japan a week before a submission deadline is cutting it too close, especially if registration paperwork needs to be completed first.
The full submission-to-results cycle -- submission, shinsa session, certificate issuance, return shipping -- is typically 2–4 months. At the lower end if timing aligns with the next session. At the higher end if you just missed a session, or if the certificate issuance session falls later in the quarter. Plan for the slower end and be pleasantly surprised if it moves faster.
What Judges Actually Examine, and in What Order
Most guides skip this entirely. Understanding what the judges actually look at helps you assess whether a blade is worth submitting before you spend the money.
The NBTHK shinsa panel typically begins with the nakago (中心, the tang). This is where the signature (mei, 銘) is located on signed blades, and it is where the most telling evidence of age and authenticity lives. The nakago should have natural rust accumulation (called "a well-patinated nakago" in collector language) consistent with the blade's claimed age. File marks (yasurime) on the nakago, the style of the signature, and the general condition of the tang are all evaluated here. A mei that does not match the expected characteristics of the attributed smith ends the evaluation quickly. For more on reading a signature correctly, our guide on katana mei authentication covers the specifics in detail.
Next, the judges examine the blade itself. The hamon (刃文, the temper line) is scrutinized for character, consistency, and authenticity. A genuine hamon has specific visual qualities visible under good light that differ meaningfully from a polished-in or acid-etched fake. The jihada (地肌, the grain pattern of the steel) is examined for the characteristics associated with the claimed period, school, and smith. A blade attributed to a Soshu school smith should show the steel grain and nie (hard crystalline particles in the hamon) consistent with that tradition.
Overall health and condition come last in sequence but matter throughout. The judges are looking for kizu (傷, flaws) of various types, evidence of past polishing that has thinned the blade, warps, and any repairs to the cutting edge. They also assess proportional integrity: a blade that has been shortened significantly from its original length loses geometry that affects appreciation, even if the remaining portion is fine.
Koshirae (拵え, sword mountings) and fittings submitted alongside the blade are evaluated separately by appropriate specialists. A blade and its fittings can receive different results from the same submission.
Pass Rates by Tier
The figure you sometimes see quoted online is that only 20% of submitted blades pass NBTHK certification. That number is widely misapplied. It refers to the proportion of all registered swords in Japan that hold any current NBTHK certification, not the pass rate for individual submissions.
The actual pass rate for Hozon submissions is approximately 60–70%. That sounds more encouraging, and it should, but only if you understand what it means. Experienced dealers and agents do not submit everything. They pre-screen. When you see a 60–70% pass rate at Hozon, that is a pool of blades that already went through a filter applied by people who know what they are doing. An untested collector submitting a blade without prior expert assessment will face a much lower effective pass rate on their particular submission.
Tokubetsu Hozon is harder. The pass rate for blades submitted specifically at this tier (which must already hold Hozon) is significantly lower -- perhaps 30–40% in a given session -- because the quality bar is genuinely higher and the panel is stricter.
Juyo Token is not open submission in the same sense. As noted above, a blade is typically promoted through recognition at Tokubetsu Hozon level over time. Of the blades formally submitted for Juyo consideration, the pass rate varies by session but is selective. Of all Tokubetsu Hozon blades that exist, only a small fraction will ever reach Juyo.
Tokubetsu Juyo Token, with approximately 700 examples worldwide, does not have a meaningful "pass rate" in any useful sense. It represents the absolute pinnacle of what survives.
Fatal Flaws That Disqualify a Blade
Certain conditions are automatic disqualifiers. Knowing them saves money and wasted time.
A hagiri (刃切, an edge crack) disqualifies a blade at every level. This is a crack in the cutting edge itself, sometimes visible to the naked eye, sometimes only detectable under specific lighting conditions. It is structural damage that the NBTHK will not certify around, regardless of how otherwise fine the blade may be. An edge crack can originate from thermal stress during original forging, from an impact, or from improper polishing. However it got there, it is terminal for certification purposes.
A fukure (膨れ, a blister or delamination in the steel) is similarly disqualifying. This is where layers of the folded steel have separated, creating a visible bubble or separation in the surface of the blade. Fukure can be present from the original forging process as a flaw in the tamahagane or in the smith's technique, or can develop over centuries of stress. It is considered a fundamental quality defect.
Gimei (偽銘, a false or forged signature) disqualifies a signed blade automatically. The entire point of shinsa for a signed blade is to verify the signature. If the judges determine the mei is not genuine, the blade fails. It may still be genuine nihonto of genuine quality, but it will not receive Hozon as an attributed piece. Some such blades are re-submitted as mumei (無銘, unsigned), with the forged signature removed from the nakago, and assessed on their own merits. For a full treatment of how fake signatures are identified, our guide on spotting gimei is worth reading before you submit anything signed.
Excessive shortening (suriage, 磨上げ) does not automatically disqualify a blade, but it limits the tier achievable. A blade that has been shortened significantly from its original length loses the geometry and proportional qualities that matter to higher-tier certification. Heavily suriage blades rarely reach Tokubetsu Hozon and almost never Juyo.
Re-tempering (yaki-naoshi, 焼き直し) is a near-automatic disqualifier for Tokubetsu Hozon and above. A blade that has been re-tempered has lost its original hamon. The hamon the judges examine is not the one the smith made. The NBTHK is evaluating the work of the original maker, and if that work has been fundamentally altered, there is nothing to certify at that level. Exceptions exist but are extremely narrow: very early signed blades by famous smiths where the re-tempering was done in an early period for legitimate preservation reasons.
Common Mistakes That Waste Your Money
These come from real submissions we have seen or heard about. All of them were avoidable.
Submitting without a pre-assessment is the most expensive mistake. Collectors sometimes send a blade directly to an agent without asking for an opinion first. The agent submits it because that is what they were paid to do. The blade fails for a reason that would have been obvious to anyone who looked carefully. The submission fee, agent fee, and shipping costs are all gone.
Submitting at the wrong tier wastes money in a different way. A blade that is Hozon quality cannot pass at Tokubetsu Hozon regardless of how much you want it to. If your agent tells you a blade is Hozon quality and you insist on submitting at Tokubetsu Hozon, you will pay the higher submission fee and the blade will fail. Trust the expert opinion on tier selection.
Submitting a blade in poor condition and expecting certification is optimistic to the point of expense. Certification does not mean "this blade exists." It means the blade has met a quality standard. A blade with active rust, a polished-away hamon, or a thinned-out body from too many past polishings may be genuine nihonto and still fail every tier. Consider whether the blade needs professional polishing before submission. Yes, that adds cost, but sending an unpolished blade when the hamon cannot be clearly seen by the judges is simply not presenting the blade at its best.
Misunderstanding what happens after a failure is also common. Some collectors assume a failed submission means the blade is fake. It does not. It means the blade, as presented, did not meet the certification standard for the tier submitted. The blade might pass at a lower tier, pass after polishing, pass if the gimei is addressed, or simply be a genuine but uncertifiable piece. Failure is a result, not a verdict on authenticity.
Finally, not budgeting for the full round trip. We have had collectors budget only for the submission fee, then be surprised by the agent's handling charge, the cost of shipping insurance, and customs paperwork fees on return. Get a full itemized estimate from your agent before anything moves.
Every blade in our collection has already been through NBTHK shinsa.
We handle the certification process in Japan so you do not have to. Browse authenticated nihonto available now, all with current NBTHK papers and Token Toroku-sho included.
View Certified CollectionFrequently Asked Questions
How much does it cost to submit a sword to NBTHK?
The NBTHK's own submission fee is approximately ¥30,000 (~$200) for Hozon, ¥45,000 (~$300) for Tokubetsu Hozon, and ¥80,000 (~$530) for Juyo Token. However, overseas collectors must add agent handling fees ($200–500), international shipping to Japan, insurance, and return shipping. A realistic all-in cost for a Hozon submission from outside Japan is $400–700. These fees are non-refundable regardless of outcome.
Can I submit a blade to NBTHK from outside Japan?
Not directly. The NBTHK requires submissions to come through a licensed Japanese agent or dealer member. Overseas collectors must find a reputable agent based in Japan, who handles the submission paperwork, physical delivery to the NBTHK, receipt of results, and return shipping. The agent's fee is on top of the NBTHK submission fee.
How long does NBTHK shinsa take?
From the day your blade is submitted to the NBTHK to the day you receive the result and papers back in your hands, expect 2–4 months. The NBTHK holds shinsa sessions approximately 4–5 times per year, primarily in Tokyo. If you miss the deadline for one session, your blade waits for the next. There is no expedited process.
What happens if my blade fails shinsa?
The blade is returned without papers and without a written explanation of why it failed. The NBTHK does not issue formal rejection reasons. Your agent may be able to obtain informal feedback through their contacts. The submission fee and all other costs are non-refundable. Failure does not mean the blade is fake; it means it did not meet the certification standard as presented.
Can I resubmit a blade that failed?
Yes. A failed blade can be submitted again in a future session. If the failure was due to a condition issue (a dirty or poorly presented blade, a hamon obscured by surface rust), addressing that condition and resubmitting is a reasonable approach. If the failure was due to a structural flaw (hagiri, fukure) or a forged signature, resubmission at the same tier is unlikely to produce a different result. Get your agent's honest assessment before spending the fees again.
Does NBTHK certification increase the value of my sword?
Yes, significantly. A Hozon-certified Shinto katana typically commands $4,000–12,000 versus $2,000–6,000 for an equivalent uncertified piece. Tokubetsu Hozon can push the same category to $12,000–40,000. Juyo Token blades rarely sell below $50,000. The certification does not create quality; it documents it in a way the international market recognizes and prices in. For nihonto held as investments, certification is the mechanism that converts quality into liquidity.
What to Do Next
If you have a blade you are considering submitting, start with an assessment before spending a single dollar on fees or shipping. Send clear photographs to a specialist dealer who can give you an honest read on eligibility and the appropriate tier. The assessment costs nothing with us; it saves collectors thousands.
If you are buying rather than submitting, the smartest approach is to buy certified. All blades in our authenticated collection carry current NBTHK papers. The shinsa has already been done, the fees have already been paid, and the result is already in hand. You know exactly what you are buying before the purchase, not months after it.
For a deeper look at what the different certification levels actually mean for value and how to read the papers themselves, the full NBTHK certificates guide covers each tier in detail. If you are working with a signed blade and want to understand how judges assess mei authenticity, see our guide on reading katana signatures. And if you are building a collection with long-term value in mind, our overview of nihonto as investment covers the certification question in the context of portfolio strategy.
You can also browse NBTHK-certified katana specifically, or explore commissioning a new piece from licensed Japanese swordsmiths whose work qualifies for Hozon from the moment it is completed. Every path into nihonto collecting benefits from understanding how the certification system works. Now you do.