Importing a katana into the United States is legal and, when done correctly, routine. U.S. Customs and Border Protection (CBP) does not prohibit swords. What stops shipments is missing paperwork on the Japan side, not the U.S. side.
Most authentic nihonto are over 100 years old and qualify as duty-free antiques under HTS code 9706 (0% import duty). Modern gendaito fall under HTS 9307 at approximately 2.7% duty. The documents CBP may request are a proper commercial invoice, the Japanese export certificate from the Agency for Cultural Affairs, and a copy of the Token Toroku-sho (刀剣登録証), Japan's mandatory sword registration card. The original NBTHK certificate must travel physically with the blade.
Tokyo Nihonto prepares every shipment with the full documentation package, so your sword clears customs without delays. Browse our authenticated nihonto collection to see what is currently available for U.S. buyers.
A collector in Seattle paid $11,000 for an NBTHK-certified Shinto katana on Yahoo Auctions Japan. The blade was legitimate, the seller honest, the deal fair. Then FedEx held the package at customs for three weeks because the commercial invoice included no Japanese export documentation and the declared value didn't match the wire transfer record. Three weeks, two broker fees, and a lot of stress, for a problem that was entirely avoidable.
We ship nihonto to U.S. collectors every week. The process is not complicated when you know what it actually requires. This guide tells you exactly what that is.
Is It Legal to Import a Katana into the USA?
Yes, without question. CBP states explicitly on cbp.gov that swords are not prohibited imports into the United States. There is no federal ban on owning or importing Japanese swords, including fully functional, sharp nihonto. U.S. law does not treat katana the way it treats firearms.
What matters to CBP is that the sword was not stolen cultural property, that it was legally exported from Japan, and that the declared value is accurate. Authentic nihonto registered in Japan's national system and exported with proper documentation clear those bars automatically.
The legal complexity, when it exists, is at the state and local level. More on that below.
How Much Customs Duty Will You Pay?
This depends on the age of the sword, and most guides online get it wrong by quoting a flat rate without mentioning the antique exemption.
If your nihonto is over 100 years old, it enters the United States as an antique under HTS code 9706 at 0% import duty. Most blades sold through Tokyo Nihonto are Edo-period or earlier, which means they clear duty-free. A Shinto katana from 1700, a Koto blade from the Muromachi period, a signed Shinshinto piece from the 1850s: all duty-free.
Modern traditionally-forged swords, including gendaito by living smiths, fall under HTS code 9307 (swords, cutlasses, and similar arms) at approximately 2.7% duty. On a $20,000 gendaito by a mucansa-ranked smith, that is $540. Significant, but not a surprise if you know to expect it.
Anything under the U.S. de minimis threshold of $800 enters duty-free regardless of classification. Essentially no authentic nihonto falls below that threshold.
The practical point: if you are buying an Edo-period or earlier blade at Tokyo Nihonto, you are paying $0 in import duty. Competitors who quote "2 to 5% duty across the board" are not wrong about gendaito, but they are leaving out the antique exemption that covers the majority of the serious collector market.
What Paperwork Does Japan Require Before Export?
Every nihonto in Japan is registered in the national firearm and sword control system. That registration is recorded on the Token Toroku-sho (刀剣登録証), a card issued by the prefectural board of education where the sword is registered. No nihonto can legally leave Japan without one. If a seller cannot produce this card, do not proceed.
Beyond the Toroku-sho, exporting any nihonto from Japan requires an export permit from the Agency for Cultural Affairs (文化庁, Bunkacho). This document confirms the sword is not a designated protected cultural property and is cleared for export. Without it, the sword cannot pass through Japanese customs.
These two documents are what CBP may request at the U.S. end: the Token Toroku-sho and the Agency for Cultural Affairs export certificate. Most private buyers purchasing directly on Yahoo Auctions Japan have no reliable way to obtain the export certificate themselves. Many Japanese auction sellers are not set up to provide it either. This is the most common reason swords get held at U.S. customs.
What Does U.S. Customs Actually Ask For?
CBP agents processing a nihonto shipment look for three things: the commercial invoice, the Japan-side export documentation, and increasingly the Token Toroku-sho. Here is what each needs to contain.
The commercial invoice must state the declared value accurately. It must match your payment record exactly. Under-declaring to reduce duty is illegal and triggers additional scrutiny. Declare the full purchase price including any commissions or fees.
The Japanese export certificate must accompany the shipment physically, inside the package, not as a scanned attachment emailed separately. When CBP opens a box and finds a complete, original document set, processing is fast. When they have to request documentation after opening, packages sit in warehouses.
If your sword carries an NBTHK certificate (Hozon, Tokubetsu Hozon, or Juyo Token), the original must travel with the blade. A photocopy does not carry the same weight and is one of the clearest red flags for customs agents and collectors alike. The original origami is part of the sword's provenance record. For a full explanation of what each NBTHK tier means and what the certificate actually proves, see our guide on NBTHK certificates explained.
The shipper declares contents as "antique collectible sword" on shipping labels and customs forms. Accurate, honest, and standard practice for every dealer who does this regularly.
How Should You Ship a Katana Internationally?
FedEx International Priority and DHL Express are the standard carriers for nihonto shipments between Japan and the United States. Both have established procedures for declared antiques and collectibles. Use either service, insure the piece for full declared value, and include the complete documentation set inside the package.
For any piece over $5,000, insurance is not optional. Standard carrier declared-value coverage is limited, so for pieces above $20,000 we recommend specialist fine art and antiques insurance from a provider that understands the nihonto market.
If you are traveling personally from Japan to the United States and carrying a sword you purchased, the rules differ. A katana cannot travel as carry-on luggage on any commercial airline. It must go in checked baggage in a hard-sided locked case, declared to the airline at check-in. TSA rules prohibit bladed weapons as carry-on items regardless of cultural context or documentation.
State Laws: What to Know at the Destination
Once a nihonto clears federal customs, state laws govern what you can do with it. Here is the short version for the states where most of our U.S. buyers are located.
| State | Ownership | Public Carry | Notes |
|---|---|---|---|
| California | Legal | Legal (open, sheathed) | No cane swords. Prohibited in schools and government buildings. |
| New York | Legal | High risk in NYC | Keep at home. Do not transport on public transit in NYC. |
| Texas | Legal | Broadly legal (since 2017) | Exceptions: schools, bars, polling places, hospitals. |
| Florida | Legal | Legal if not concealed | Concealment is the line. Open carry of a sheathed sword is generally fine. |
| Most other states | Legal | Varies | Private ownership almost universally legal. Check local carry rules before transporting outside your property. |
For display or collection purposes at home, ownership is legal in all 50 states. The restrictions apply when you move the sword in public spaces. For a nihonto purchased as a collector piece, that distinction is largely academic.
How Tokyo Nihonto Handles Import Logistics for You
This is where buying from a dedicated nihonto dealer makes a concrete difference to your experience.
Every sword we source goes through the same export preparation in Japan before it ships. We obtain the Agency for Cultural Affairs export certificate, confirm the Token Toroku-sho is present and matches the blade, prepare an accurate commercial invoice with full declared value and proper HTS classification, and package the original NBTHK certificate (if present) with the shipment. Everything CBP might ask for is in the box before it leaves Japan.
We ship via FedEx International Priority with full declared-value insurance as standard. The contents are declared as "antique collectible sword" with the appropriate HTS code. We have never had a shipment seized by CBP. We have had occasional holds for additional documentation review, and in every case we resolved them within days by providing the documents we already had prepared.
Buying a nihonto on Yahoo Auctions Japan yourself and arranging your own export is possible, but it requires navigating Agency for Cultural Affairs paperwork in Japanese, finding a freight forwarder with experience in antique weapons, and hoping the seller is cooperative enough to assist. Most are not set up for it. The documentation gaps created in that process are what cause the customs delays.
Frequently Asked Questions
Is it legal to import a katana into the United States?
Yes. CBP explicitly states on cbp.gov that swords are not prohibited imports into the United States. There is no federal law banning the import or ownership of nihonto. You must declare the sword at customs, provide an accurate invoice, and have proper Japanese export documentation. Switchblades and spring-loaded mechanisms are prohibited; traditional bladed swords are not.
Do I have to pay customs duty on a nihonto imported from Japan?
It depends on age. Nihonto over 100 years old qualify as antiques under HTS code 9706 and enter the USA at 0% duty. Modern gendaito are classified under HTS 9307 at approximately 2.7% duty. Anything under the $800 de minimis threshold is duty-free regardless. Most antique nihonto sold by Tokyo Nihonto attract no import duty.
What documents do I need to import a Japanese sword into the USA?
The essential documents are: an accurate commercial invoice with declared value, the Japanese export certificate from the Agency for Cultural Affairs (Bunkacho), and the Token Toroku-sho (刀剣登録証), Japan's mandatory sword registration card. If the sword carries an NBTHK certificate, it must travel as the original, not a photocopy. CBP may request any or all of these.
Can I carry a katana on a plane from Japan to the USA?
No carry-on. A katana must travel in checked baggage in a hard-sided locked case, declared to the airline at check-in. TSA prohibits bladed weapons as carry-on items. In checked baggage with proper declaration, transport is legal and routine. Verify your airline's specific policy before you travel, as some carriers add their own restrictions on top of TSA rules.
Are antique nihonto duty-free when imported to the USA?
Yes. Nihonto manufactured more than 100 years ago qualify as antiques under U.S. Customs HTS code 9706 and are imported at 0% duty. This covers essentially all Edo-period and earlier blades, which make up the majority of the serious collector market. This exemption is widely unknown and not mentioned in most online guides about importing katana.
How does Tokyo Nihonto handle the import process for U.S. buyers?
We prepare the complete documentation package before every shipment leaves Japan: Agency for Cultural Affairs export certificate, Token Toroku-sho, accurate commercial invoice with correct HTS classification, and the original NBTHK certificate if present. We ship via FedEx International Priority with full declared-value insurance. U.S. buyers receive a package that clears customs cleanly, without needing to manage any of the Japan-side logistics themselves.
Key Takeaways
- Importing a katana or nihonto into the USA is legal. CBP does not prohibit swords. The issue is always paperwork, not legality.
- Nihonto over 100 years old enter the USA duty-free under HTS code 9706. Modern gendaito are approximately 2.7% under HTS 9307.
- The two critical Japan-side documents are the Token Toroku-sho (registration card) and the Agency for Cultural Affairs export certificate. Without them, expect a customs hold.
- The original NBTHK certificate must travel physically with the blade. A photocopy is not an equivalent substitute.
- State laws govern what you do with the sword after customs. Private home ownership is legal across all 50 states.
- Tokyo Nihonto prepares the complete documentation package for every shipment, so U.S. buyers receive a legally clear package without managing Japan-side logistics.
If you are still deciding between an antique nihonto and a modern commission, our upcoming guide on antique nihonto versus custom commission will help you work through the right choice for your collection goals. For the authentication side of the equation, read our detailed breakdown of NBTHK certificates and what each tier actually proves.