The Contract Is Signed.
Their Accounting Team Sends the Invoice Back.

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Quick Answers

We issued the invoice on signature. Why has nothing been paid?

Because in most Japanese companies the payment date is not counted from your invoice date. It is counted from a monthly closing date, and everything that arrives before that date is paid together on a single later date. An invoice that lands one day after the closing date does not move a day, it moves a month. Nothing has gone wrong and nobody is disputing the amount — the schedule you are imagining and the schedule their accounts payable system is running are simply two different schedules, and only one of them exists.

Why did their accounting department send our invoice back?

Almost always because of a missing or wrong required item rather than a disagreement about the money. Since 1 October 2023 a Japanese company generally needs a qualified invoice to take the purchase-tax credit on what it buys, and the National Tax Agency lists what such an invoice has to contain: the recipient's name, the seller's name and registration number, the transaction date, what was supplied, the total consideration for each of the 10% and 8% rates with the applicable rate shown, and the consumption tax amount for each rate. Your template was probably written for a jurisdiction that requires none of those, so it fails on items your finance team has never heard of.

TL;DR

The contract is signed, the product is live, and the invoice your billing system generated is sitting in a Japanese accounting department doing nothing. Two separate things are happening. The first is timing: Japanese companies pay on a closing date plus a payment date rather than on your invoice date, so an invoice sent in the wrong week slips a whole cycle, and no amount of chasing recovers it. The second is form: since 1 October 2023 the buyer generally needs a qualified invoice — one carrying the seller's registration number and tax shown by rate — to claim the purchase-tax credit, and an invoice missing that is not a minor formatting issue for them, it is a cost. Neither problem is visible from headquarters, because in most markets an invoice is a request for money, and here it is a document that has to survive a check before it becomes one. This article covers what the check looks at, what it does to your cash, and what to do when your global billing system cannot produce a compliant document.

Key Takeaways

• Your invoice date is not the clock. Payment runs from a monthly closing date to a fixed payment date. Miss the closing date by a day and the cash moves by roughly a month.
• A missing registration number is a financial problem for the buyer, not a clerical one. Without a qualified invoice, the purchase-tax credit is generally unavailable to them, subject to a transitional measure that runs to the end of September 2031.
• The required items are published and short. The National Tax Agency lists six. Most foreign invoice templates fail at least two of them, usually the registration number and tax shown separately by rate.
• The name on the invoice has to match their register exactly. Including whether the corporate form sits before or after the company name. Their system matches on the string, and a person has to fix it by hand when it does not.
• The person who signed the contract is not the person who pays you. Accounting is a different department with a different address, a different inbox and no interest in your commercial relationship.

The Deal Closed in April. The Money Arrives in June.

The Japan deal closed. The contract is countersigned, the service is live, and your billing system did what it does everywhere: generated an invoice on the start date with net 30 on it. Sixty days later, finance flags the account as overdue and asks the Japan lead to chase it.

The Japan lead calls, and the answer is polite and slightly puzzled. Nothing is wrong. The invoice was received. It is in the April closing, so it will be paid at the end of May.

What is happening is that most Japanese companies do not pay individual invoices on individual due dates. They run a cycle. Everything received up to a monthly closing date is gathered into one batch, checked, approved internally, and paid on a single payment date afterwards. The two dates together are what your counterpart means when they name a payment arrangement, and both are properties of their accounts payable process rather than terms they negotiated with you.

Three consequences follow, and all three are invisible from headquarters.

Your net 30 is decorative. It is on the document, nobody disputes it, and it does not drive anything. What drives the payment is the pair of dates in their system. If you want to change the outcome, the lever is the date your invoice arrives, not the words on it.

A single day can cost a month. An invoice arriving just after the closing date falls into the next cycle. It is the most common reason a Japan payment appears to be a month late while everybody involved believes it is on time, and it is entirely avoidable once you know the two dates, which nobody will volunteer because to them they are obvious.

Your first Japan forecast will be wrong in a specific direction. The revenue is real, the cash is later than the model assumed, and the gap is structural rather than a collections failure. Telling the board that the account is delinquent, when it is being paid exactly as intended, is a worse outcome than the delay itself.

The situation above is a composite of a pattern I see repeatedly in Japan market entry work. It does not describe a specific client, and the timing described here is field observation rather than survey data. The tax rules cited later are documented and linked.

Then the Invoice Comes Back

The second problem is less forgiving, because the buyer's own money is involved.

Japan's qualified invoice system — the invoice system, as it is universally called in English, and tekikaku seikyūsho tō hozon hōshiki in Japanese — started on 1 October 2023. Under it, a company that buys from you generally needs to hold a qualified invoice in order to claim the purchase-tax credit on that purchase: the mechanism by which it subtracts consumption tax it paid from consumption tax it owes. The National Tax Agency states the position plainly: as a rule, no invoice, no purchase-tax credit for that purchase or expense. A transitional measure runs to the end of September 2031 under which a set proportion of the equivalent amount can still be treated as creditable without one, so the effect is currently softened rather than absolute.

Read that from the accounting clerk's side. An invoice that does not qualify is not untidy. It is a document that may cost their company money at filing time, and the person who accepted it is the person who will have to explain it. That is why it comes back rather than being quietly processed, and why the tone of the request feels heavier than the size of the fix.

It is also why the answer “our head office cannot change the template” does not resolve anything. It is a statement about your constraints, offered in response to a question about their liability.

What a Qualified Invoice Has to Contain

The requirement is public and short. The National Tax Agency lists the items a qualified invoice must carry:

1. The name of the counterparty the invoice is issued to.
2. The name of the seller — you — and the registration number.
3. The transaction date.
4. What the transaction covers, including an indication where an item is subject to the reduced rate.
5. The total consideration for each of the 10% and 8% categories, and the applicable rate.
6. The consumption tax amount for each of those rates.

Two details are worth knowing because they remove work rather than adding it. The agency notes that the document does not have to be called an invoice: a delivery note or a receipt carrying the required items qualifies just as well, and more than one document can be read together. And in retail, restaurants, taxis and similar businesses selling to the general public, a simplified version omitting some items is permitted — which is why a receipt you collect in Japan may legitimately have no addressee on it.

The registration number

The registration number is issued to a business that has registered as a qualified invoice issuer, and the tax office notifies it after registration. In practice it appears as the letter T followed by thirteen digits — the National Tax Agency's public lookup site asks you to enter the thirteen digits excluding the T to search for a registered issuer.

That public site matters more than it first appears. Your customer's accounting department can and sometimes does check the number you printed. A number that does not resolve, or resolves to a different entity than the one on the contract, is a far worse conversation than no number at all.

Whether your own entity can or should register is genuinely a question for a tax professional, and it depends on facts about your structure that no article can know: which entity contracts, whether it is a taxable person in Japan, how the service is treated. What is not in doubt is the consequence for the buyer if the number is absent, and that consequence is what shows up in your accounts receivable.

Tax shown by rate is the item foreign templates miss

The registration number is the famous one, so it usually gets fixed. The quieter failure is items five and six: the consideration and the tax broken out for each rate, rather than one tax line at the bottom. Most B2B SaaS sells only at the standard rate, so this ought to be trivial — but a template that prints a single undifferentiated “Tax” line, with no rate stated, still does not show what the rules ask to be shown. It is a small change to a document and, in a global billing platform, frequently not a small change at all.

The Small Things That Stop It

Beyond the tax items, a set of ordinary-looking details decide whether an invoice is processed or handled by a person. None of them are legal requirements. All of them create work on the other side, and work is what causes a document to be set aside.

The company name has to match their register exactly. Japanese corporate names carry the legal form as part of the name, and it can sit before or after it. The two placements produce two different strings, and if you have used the wrong one, or written the name in Latin characters when their register holds it in Japanese, a system that matches on text will not match and a person has to intervene. Take the name from the contract or the corporate register, not from the signature block of an email.

The addressee is a company, not your champion. An invoice made out to an individual, or to a department that does not exist in their structure, invites a question before it invites a payment.

The invoice goes to accounting, not to the buyer. This is the single most common cause of an invoice that has simply never been seen. The person who signed is in a business unit; payment is run by a different department, often at a different address, frequently with its own submission inbox or supplier portal. Ask, once, where invoices are to be sent and in what format, and then send them there every time.

A seal may be expected, and may not be required. Japanese business documents traditionally carry a company seal, and some counterparties still ask for one on an invoice even though the tax rules do not list it among the required items. It is worth asking whether their internal process needs one before you discover it at the point of submission; if it does, that is a conversation about their procedure, not about the law.

Currency and bank details decide who absorbs the fees. An invoice in a foreign currency payable to an overseas account is possible and is also a small internal project on their side. Whether transfer charges are deducted from the amount you receive is worth settling in advance, in writing, rather than discovering it as a shortfall you then have to reconcile.

When Your Billing System Cannot Produce a Japanese Invoice

This is the situation most foreign vendors are actually in. The global platform issues one invoice format worldwide, changing it is a roadmap item owned by a team on another continent, and the customer is waiting now. Three practical arrangements come up repeatedly, and the first is usually the right one to start with.

1. Issue a supplementary document. Because the required items may be spread across more than one document read together, a clean Japanese-language statement carrying the registration number, the transaction details and the tax by rate can accompany the system-generated invoice. Confirm with the customer's accounting department that the pair is acceptable to them before you rely on it, and keep the numbers on the two documents identical.
2. Let the customer's system produce the document. In some arrangements the buyer generates a purchase statement and the seller confirms it. Whether that works is a question for the customer's accounting team and your tax adviser, not something to assume — but it is a standing practice, and asking whether they operate one is a better question than asking them to accept a non-compliant invoice.
3. Invoice through a domestic entity or partner. If you sell through a reseller or a local subsidiary, the invoice the customer receives is theirs and the problem disappears from your side. This is one of the unglamorous reasons channel-first entry outperforms cold direct sales here, and it is worth weighing before you have fifty direct accounts and a billing problem that scales with them.

What does not work is asking the customer to accept a document their tax filing cannot use. They may do it once for a relationship they value. They will raise it at renewal, and by then it will have become evidence about how you operate rather than a formatting question.

What to Fix Before the Next Invoice

The whole of this is a short list, and none of it needs headquarters' permission to start.

• Ask every Japanese customer for two dates: the monthly closing date, and the payment date that follows it. Put them in the CRM next to the renewal date and build the forecast from them.
• Take one invoice you have already issued into Japan and check it against the six items, honestly. Most fail on the registration number, the rate, or both.
• Confirm the exact legal name from the contract, and confirm where invoices are to be sent and in what format — the address, the inbox or the portal, and whether a PDF is accepted.
• Resolve the registration question with a Japanese tax professional rather than internally. It is the one item on this list where a confident guess is expensive.
• Tell finance at headquarters, before the quarter closes, that the Japan cash timing is structural. It is a much easier conversation in advance than as an explanation for a miss.

The pattern underneath is the same one that shows up in procurement and the internal approval trail and in the security review that arrives after the deal is agreed. Signature is not the end of the sale here. It hands the file to another department, with its own rules, its own calendar and no reason to bend either for a vendor it has never met. The timing question is close kin to the fiscal-year mismatch that moves deals to March, and worth reading alongside it.

A Japan Readiness Check reads your Japanese-facing material the way the departments after the signature read it — including the documents that decide whether you get paid on the date you expect.

Frequently Asked Questions