Registering as a Qualified Invoice Issuer via e-Tax

Registering as a qualified invoice issuer via e-Tax is the online process by which a company applies to Japan's National Tax Agency (NTA / 国税庁) to become a registered issuer of qualified invoices (適格請求書発行事業者) under the invoice system that took effect on 1 October 2023. Only a registered issuer may hand customers a qualified invoice carrying a valid registration number, and only such an invoice lets those customers claim an input consumption-tax credit. This post is deliberately narrow: it covers the registration mechanics — how you submit the application through e-Tax, how that compares with paper filing, how long each route takes, and what the resulting number and public listing contain. For a full explanation of how the invoice system itself works, see our companion guide, the qualified invoice system for foreign companies.

Key Takeaways

• Register through e-Tax, not on paper, for speed. The NTA's online route (国税電子申告・納税システム, e-Tax) processes registration applications in roughly a few weeks, versus roughly a couple of months for paper filed to the Invoice Registration Center (インボイス登録センター).
• Your output is a T-number. A successful registration returns a registration number formatted as "T" + 13 digits (e.g. T1234567890123), which must appear on every qualified invoice you issue.
• Registration is public. Your number, name, and — for corporations — registered address are published on the NTA's Invoice Issuer Publication Site (公表サイト / 適格請求書発行事業者公表サイト) so customers can verify you.
• You log in the same way you e-file national tax. Access e-Tax with gBizID Prime or an electronic certificate such as a My Number Card or a commercial certificate.
• The invoice system started 1 October 2023. Registration is voluntary but effectively required if your B2B customers need to claim input consumption-tax credits (消費税) on what they buy from you.

What does registering via e-Tax actually mean?

Registering via e-Tax means submitting the registration application for a qualified invoice issuer (適格請求書発行事業者の登録申請書) electronically through the NTA's national e-filing system rather than mailing a paper form. e-Tax is the same platform foreign-owned companies use to file corporation tax and consumption tax, so registration sits alongside your other national-tax filings. If you are new to the platform, our overview of what e-Tax is and how national e-filing works in Japan walks through login and client software; this article assumes you can already reach the e-Tax dashboard and focuses only on the registration step. e-Tax and its local-tax counterpart are introduced together in our guide to Japan's digital tax and filing platforms.

The application asks for your corporate details, the date from which you want registration to take effect, and — for foreign-owned entities — confirmation of your consumption-tax status. Once the NTA processes it, the registration is complete and your T-number is live.

e-Tax vs paper: which registration route is faster?

The online route is materially faster: e-Tax typically returns a registration number in roughly a few weeks, while a paper application mailed to the Invoice Registration Center typically takes roughly a couple of months. If a customer is asking for your T-number before a billing cycle, the difference is decisive.

Aspecte-Tax (online)Paper (Invoice Registration Center)Submission methodElectronic filing through e-TaxMailed paper form to the regional Invoice Registration CenterTypical processing timeRoughly a few weeksRoughly a couple of monthsLogin / identitygBizID Prime or electronic certificate (My Number Card / commercial certificate)Physical form; no login requiredNotification of resultElectronic notification via e-Tax message boxPostal notice of the registration numberCorrecting errorsAmend and resubmit onlineRe-mail; adds weeksBest forCompanies already e-filing national taxFilers without e-Tax access set up

You reach e-Tax itself through the National Tax Agency at the NTA's English portal. Because the ¥100 million paid-in-capital class is already mandated to e-file national tax, most larger foreign-owned companies are set up on e-Tax and should default to the online route.

How do I log in and submit the application on e-Tax?

Access to e-Tax uses the same credentials as any other national-tax filing: sign in with gBizID Prime or an electronic certificate (an electronic certificate here means a My Number Card or a commercial certificate). There is no separate account just for invoice registration.

In practice the steps are: (1) log in to e-Tax with gBizID Prime or your certificate; (2) open the registration application for a qualified invoice issuer; (3) enter corporate details and the desired effective date; (4) submit; and (5) watch the e-Tax message box for the electronic notification carrying your number. Because e-Tax is also where you file consumption tax, keeping registration on the same platform simplifies later filings. The distinction between e-Tax (national) and its local-tax sibling is covered in our comparison of eLTAX vs e-Tax — invoice registration is purely a national-tax, e-Tax matter and never touches eLTAX.

What is the T-number, and what gets published?

A successful registration produces a registration number formatted as the letter "T" followed by 13 digits (for corporations, the 13 digits are the company's Corporate Number). This number must appear on every qualified invoice you issue; without it, the document is not a qualified invoice and your customer cannot claim the input consumption-tax credit. The number, your name, and — for corporations — your registered address are then published on the NTA's Invoice Issuer Publication Site (公表サイト), where any customer can confirm that a T-number on an invoice is genuine and currently registered.

ItemDetailFormat of the number"T" + 13 digits (e.g. T1234567890123)Basis of the 13 digits (corporations)The company's existing Corporate Number (法人番号)Where it must appearOn every qualified invoice (適格請求書) you issuePublished: numberYes — searchable on the Publication Site (公表サイト)Published: issuer nameYesPublished: registered addressYes, for corporationsPurpose of publicationLets customers verify a supplier's registration is valid

What should foreign-owned companies check before registering?

Foreign-owned companies should confirm three things before applying: their consumption-tax status, who their customers are, and who will file. Registering as a qualified invoice issuer makes you a taxable person for consumption tax, so a company that was previously tax-exempt should weigh that consequence deliberately rather than register reflexively.

• Consumption-tax status. If you are currently a tax-exempt enterprise, registering means you become liable to account for consumption tax (消費税). Confirm this is the intended outcome.
• Customer base. If your customers are businesses that claim input credits, they will generally expect your T-number; if you sell only to consumers, the pressure to register is lower.
• Registered address. Remember that a corporation's registered address is published, so make sure your commercial registration details are current before you apply.
• Filing agent. A licensed agent can submit the e-Tax registration on your behalf, which is common for foreign-owned entities without in-house Japanese tax staff.

AQ Partners handles this end to end as part of our back-office operations support, from checking your consumption-tax position to filing the e-Tax registration as your agent.

Frequently Asked Questions

Do I have to use e-Tax, or can I still file on paper?

Both routes are available. Paper applications go to the regional Invoice Registration Center, but they take roughly a couple of months to process versus roughly a few weeks online. If your company is already set up on e-Tax — which the ¥100 million paid-in-capital class must be, since national e-filing is mandatory for them — the online route is faster and lets you track the result in your e-Tax message box.

Is registration as a qualified invoice issuer mandatory?

No. Registration is voluntary. In practice, however, it is effectively required if your customers are businesses that need to claim input consumption-tax credits on what they buy from you, because they can only do so against a qualified invoice bearing your T-number. Companies selling only to consumers face less pressure to register.

What does my registration number look like and where does it appear?

It is the letter "T" followed by 13 digits, such as T1234567890123; for corporations the 13 digits are the existing Corporate Number. It must be printed on every qualified invoice you issue, and it is published together with your name and registered address on the NTA's Invoice Issuer Publication Site (公表サイト) so customers can verify it.

Can AQ Partners register on our behalf?

Yes. AQ Partners can act as your filing agent (代理) and submit the e-Tax registration application for you, along with confirming your consumption-tax status beforehand. This is a common arrangement for foreign-owned companies that do not have Japanese-speaking tax staff in-house. Reach us at hello@aqpartners.jp to get started.

Registering as a qualified invoice issuer is a one-time step, but choosing the right route and getting your consumption-tax status right the first time saves weeks of back-and-forth. If you would like AQ Partners to check your position and file the e-Tax registration as your agent, contact us at hello@aqpartners.jp. We support foreign companies, funds, and families across accounting, payroll, tax, and compliance in Japan.

Sources

• National Tax Agency (国税庁) — e-Tax and the qualified invoice issuer registration system.
• National Tax Agency — Invoice Issuer Publication Site (適格請求書発行事業者公表サイト).
• Digital Agency (デジタル庁) — gBizID for government-service login.
• JETRO — corporate taxes in Japan overview.