Is Amazon Business Japan a separate marketplace I have to join?

No, and this is the most common misunderstanding. Amazon Business is Amazon's B2B layer sitting on the same catalogue and the same Seller Central account you already use. Amazon's own seller-facing material states that once you have registered for a Professional Selling Plan you can use the Amazon Business Seller Program, and that there is no additional cost for a seller who already holds a Professional account beyond the ¥4,900 per month (excluding tax) subscription and the usual category referral fees. So the decision is not "should I list on another platform" — you are not moving inventory, opening a store or signing a new contract. The decision is whether to switch on a set of B2B-facing features on the listings you already have, and every one of those features costs you either margin or reach. That is a much smaller commitment than a new channel, and it is also a much smaller upside, which is exactly why it deserves a deliberate answer rather than a default yes.

Do I need to be registered for Japanese consumption tax to sell to Amazon Business buyers?

You can sell to them without it, but you will be visibly at a disadvantage, and for many corporate buyers that is decisive. Since 1 October 2023 Japan has operated the Qualified Invoice System, under which a Japanese business buyer can only claim an input tax credit if it holds a qualified invoice from a registered qualified invoice issuer (適格請求書発行事業者). Amazon's seller-facing guidance states that Amazon Business customers are able to identify which products are sold by JCT-registered sellers, and warns sellers that without a registration number on file there is a possibility that Amazon Business customers will stop buying from them. Be careful with the size of that disadvantage, because it is commonly overstated: a transitional measure still lets the buyer credit part of the tax on purchases from a non-registered supplier, and under the schedule revised by Japan's 2026 tax reform that is 80% until 30 September 2026, 70% from October 2026, then tapering to nothing by October 2031. So at the standard 10% rate the immediate gap is a couple of percent rather than the full ten, widening on a published timetable. What makes it bite sooner than the percentage suggests is administrative rather than arithmetic: claiming the partial credit carries its own bookkeeping requirements, so a policy of dealing only with registered issuers is simpler for a buyer to run than tracking partial credits supplier by supplier — and Amazon shows the buyer which sellers are registered before they decide. (A separate ¥100 million ceiling on the partial credit is measured per single non-registered supplier, so it rarely binds on one marketplace seller relationship.) Registration itself is a tax matter for a Japanese tax professional, not for us or for your agency — see our guide to Japan consumption tax for foreign sellers for the underlying rules.

What does registering as a qualified invoice issuer commit a foreign company to?

More than the registration form suggests, and the terms tightened in 2024. A foreign business without a permanent establishment in Japan cannot file consumption tax remotely on its own — it must appoint a Japanese tax agent (納税管理人), and the National Tax Agency operates a separate registration application route for foreign businesses (form D1-65) under which failure to file the tax agent notification can cost you the registration. On top of that, Japanese tax commentary on the 令和6年度 (2024) tax reform is consistent that, for taxable periods beginning on or after 1 October 2024, a foreign business with no permanent establishment in Japan on the first day of the period cannot use the simplified taxation regime (簡易課税制度) or the 2割特例 transitional measure, and can no longer use aggregate payroll instead of taxable sales when applying the ¥10 million specified-period test. Read together: for a foreign seller, becoming creditable to corporate buyers means full general-method consumption tax compliance, with a Japanese tax agent, and no simplified shortcut. That is a real recurring cost and it should be priced before you chase B2B volume, with a 税理士 rather than from an article.

Should a smaller foreign brand bother with this at all?

Often not yet, and the honest test is whether corporate demand already exists rather than whether the feature is available. If your product is plausibly bought by a workplace in multiples — consumables, office and facility supplies, professional-use skincare or salon stock, anything a business buys repeatedly rather than once — then configuring business pricing and getting invoice-registered is defensible, because the buyers are there and the invoice status is what filters you out. If your product is a considered single-unit consumer purchase, corporate pricing mostly hands a discount to buyers who would have paid full price, since an Amazon Business account is free for a buyer to hold and nothing stops a sole proprietor from using one. The cheapest sequence is therefore to look before you configure: check whether business-segment orders are already appearing in your data, and only then decide what to give away. LAUNOVA scopes Amazon Japan work to the modules you actually hand over rather than a fixed package — tell us what you sell and who buys it, and we will tell you whether this is worth your attention.

Is Amazon Business Japan Worth It for Foreign Sellers?

Q: How much of a discount do business prices and quantity discounts actually require?

Amazon does not publish a mandatory discount depth, so anyone quoting you a required percentage is guessing. What the mechanics require is a direction: a business price is a price below your consumer price, quantity discounts can be layered in up to five tiers according to Amazon's seller help, and Japanese seller guidance is consistent that the discount has to deepen as quantity rises rather than move around arbitrarily. Seller Central also supports a rule-based form — set business pricing as a fixed percentage below the consumer price and let it track automatically when the consumer price changes — which is convenient and is precisely where margin gets given away without anyone re-approving it. The number that matters is not the discount percentage but the contribution margin at the discounted price after the category referral fee and, if you use it, FBA. If a five-unit tier turns a healthy margin into a marginal one, a larger B2B order has made you poorer, and the only thing you will see in reporting is that units went up.

The question usually arrives sideways. Someone notices that Japanese corporate buyers exist on Amazon, that Amazon has a B2B programme, and that competitors appear to be participating. The instinct is to evaluate it as a new channel — market size, entry cost, resourcing. That framing produces the wrong analysis, because Amazon Business Japan is not a channel you enter.

It is a layer over the catalogue you are already on: same listings, same Seller Central account, same fulfilment. What changes is that a buyer logged in with a business account sees your offer differently — potentially at a different price, potentially with an invoice-status badge, potentially not at all — depending on switches you control. The decision is which of those switches to throw, and every one costs you something specific.

It Is Not a Separate Marketplace, and That Changes the Question

Amazon describes Amazon Business as its B2B marketplace, serving corporate customers and sole proprietors. On the seller side, its own material is clear that participation runs through the account you already have: once you have registered for a Professional Selling Plan, you can use the Amazon Business Seller Program, and Amazon states there is no additional cost for a seller who already holds a Professional account. The subscription remains ¥4,900 per month excluding tax, plus the usual category referral fees, and FBA fees if you use it. If you are not yet on Amazon Japan at all, our guide to Amazon Japan for foreign sellers covers the account setup that has to happen first.

One asymmetry is worth noting: Amazon's phrasing is that you can use the programme once you hold a Professional plan. Treat enrolment as a step you take rather than a state you are automatically in, and confirm your status in Seller Central rather than assuming the switches are live.

Because there is no new contract, no new store and no new inventory position, the usual channel-evaluation questions do not apply. There is no launch cost to amortise and no exit cost to fear. What there is instead is a set of standing concessions — and concessions with no visible price tag are the ones that get approved without scrutiny.

The Four Switches You Are Actually Deciding About

Amazon's Japanese seller-facing page for the programme lists four things it gives you. They are not equivalent decisions, and it is worth separating them before deciding anything.

1. Business price (法人価格)

A second price on the same listing, visible only to buyers logged in with a business account. It is a discount by construction — a business price that is not below your consumer price accomplishes nothing. Seller Central also supports a rule-based form: set business pricing as a fixed percentage below the consumer price and let it follow automatically when the consumer price moves. That convenience is where margin quietly leaks, because after the rule is set nobody re-approves the resulting price again.

2. Quantity discounts (数量割引)

Tiered pricing that deepens as order quantity rises. Amazon's seller help describes adding tiers as either a percentage off or a fixed per-unit price, with up to five tiers, and Japanese seller guidance is consistent that the discount has to increase with quantity rather than move arbitrarily between tiers. This is the switch with the most upside and the most damage potential, for a reason covered below: larger orders can reduce total contribution if the tiers were set by intuition.

3. Business-only offers (法人限定出品)

An offer carrying only a business price and no consumer price, purchasable only by buyers with an Amazon Business account. This is the one switch that trades reach rather than margin — consumer buyers do not see the offer at all. It has real uses (bulk packs, professional-use SKUs, formats you do not want in a consumer review pool) and one obvious failure mode, which is applying it to a SKU that was selling perfectly well to consumers.

4. Analytics, and invoice payment

A dashboard segmenting business versus individual customer sales, which is the only one of the four that costs you nothing and is genuinely the first thing to use. Amazon's Japanese page also lists 請求書払い (pay by invoice) among the programme's features, described as handled by Amazon rather than by you. What that page does not spell out is how buyer non-payment risk is allocated, and we could not verify an authoritative English-language statement of it — so treat the invoicing convenience as real and the risk allocation as something to confirm in your own Seller Central policy pages before you build a plan around it.

The Real Gate Is the Invoice, Not the Price

Here is the part that reorders the whole decision. For a Japanese corporate buyer, the first filter is usually not your price — it is whether buying from you is tax-efficient at all.

Since 1 October 2023 Japan has run the Qualified Invoice System, under which a Japanese business buyer can only take an input tax credit on a purchase if it holds a qualified invoice issued by a registered qualified invoice issuer (適格請求書発行事業者). We covered the mechanics in our guide to Japan consumption tax for foreign sellers; the point specific to this decision is what Amazon does with that status.

Amazon's own seller-facing guidance states that Amazon Business customers are able to identify which products are sold by JCT-registered sellers, and tells sellers directly that without a registration number on file there is a possibility that Amazon Business customers will stop buying from them. Japanese seller-community discussion describes the status appearing as a badge when signed in with a business account. Read that as an operational fact: your invoice status is not a back-office detail your buyer discovers at checkout — it is a visible attribute of your offer at the comparison stage.

The arithmetic behind the buyer's behaviour needs stating carefully, because the gap is real but it is not yet the full tax rate — and it is scheduled to widen on a published timetable.

A transitional measure still lets a Japanese buyer credit part of the tax on purchases from a non-registered supplier, and Japan's 2026 tax reform revised that schedule. The National Tax Agency's own summary of the change sets out the creditable proportion as 80% until 30 September 2026, then 70% from 1 October 2026 to 30 September 2028, 50% to 30 September 2030, 30% to 30 September 2031, and nothing from 1 October 2031.

At the standard 10% rate, that puts an unregistered seller at roughly a 2% price disadvantage to a crediting corporate buyer today, about 3% from October 2026, and the full 10% only at the end of the taper. Anyone quoting you a flat ten-point gap right now is quoting the end state, and we are not going to do that.

What stops the smaller present-day number from being reassuring is not the ceiling that reform also tightened, and it is worth being precise about why. The partial credit does not apply above ¥100 million of tax-inclusive purchases a year — cut from ¥1 billion — but that ceiling is measured per single non-registered supplier, so in an ordinary marketplace seller relationship it will almost never bind, and we are not going to dress it up as pressure on you.

What does bite is administrative rather than arithmetic. Claiming the partial credit carries its own bookkeeping and invoice-retention requirements, so tracking it supplier by supplier costs a buyer more effort than simply having a policy of buying from registered issuers. That is our reading of why the effect in practice tends to be sharper than the percentage suggests — we are not citing a survey of procurement policies, and you should weigh it as an observation rather than a documented fact.

Either way, the sequence most sellers assume — configure corporate pricing, then worry about tax later — is backwards. The invoice status is the gate; pricing is what happens after you are through it.

Not sure whether corporate demand for your products already exists on Amazon Japan? Tell us what you sell and how your account is set up, and we will tell you whether the B2B layer is worth configuring at all.

Talk to LAUNOVA

What Invoice Registration Commits a Foreign Company To

If the gate is registration, the next question is what walking through it costs. For a foreign company this is materially heavier than for a Japanese one, and it got heavier in 2024.

You need a Japanese tax agent. A foreign business without a permanent establishment in Japan cannot simply file consumption tax remotely; it must appoint a 納税管理人 (nōzei kanrinin). The National Tax Agency runs a separate registration application route for foreign businesses — form D1-65, 適格請求書発行事業者の登録申請手続（国外事業者用）, filed with the Invoice Registration Center — and the conditions attached to it include that failure to file the tax agent notification can result in the registration being revoked. The tax agent is therefore on the critical path, not a follow-up task.

The simplified regimes are no longer available to you. Japanese tax commentary on the 令和6年度 (2024) tax reform is consistent on three changes for 国外事業者, all applying to taxable periods beginning on or after 1 October 2024:

A foreign business with no permanent establishment in Japan on the first day of the taxable period cannot use the simplified taxation regime (簡易課税制度), nor the 2割特例 transitional measure introduced for businesses entering the invoice system. The 2026 reform has since replaced that measure with a 3割特例 limited to sole proprietors for the 令和9 and 令和10 tax years, which does not change the position of a foreign company: the simplified routes are closed to you either way.
For the ¥10 million specified-period (特定期間) test, a foreign business can no longer substitute aggregate payroll for taxable sales. The payroll alternative had been a common route to remaining exempt; for foreign businesses it is closed.

The second point is worth flagging to anyone who read our consumption tax guide before this one: the general specified-period rule requires both taxable sales and payroll to exceed ¥10 million, but for a foreign business the payroll limb is no longer available, so taxable sales alone can now pull the obligation forward.

Put together, the honest summary is this: for a foreign seller, becoming creditable to Japanese corporate buyers means full general-method consumption tax compliance, through a Japanese tax agent, with no simplified shortcut. That is a recurring professional-services cost and an ongoing filing obligation, and it is the real price of the B2B layer — not the discount percentages.

To be explicit about our own limits: LAUNOVA is not a tax firm and does not act as a 納税管理人. Everything in this section is background for scoping a decision. Whether and when to register, and what it will cost you annually, is a question for a Japanese 税理士, and the answer depends on facts about your entity that no article can see.

The Margin Arithmetic Nobody Runs Until Afterwards

Assume the invoice question is settled. Now the pricing switches become a real decision, and the trap is a specific one.

A quantity discount changes two things at once: it lowers per-unit revenue and it raises units per order. Whether that is good depends entirely on where your contribution margin sits after the category referral fee and fulfilment — and referral fees are charged on the discounted price, so they scale down with it, while your landed unit cost does not. The result is that a tier which looks modest at the top line can be severely compressive at the bottom.

The following is illustrative arithmetic to show the shape of the problem, not a benchmark and not a quotation. Run it with your own cost of goods, your own category rate and your own fulfilment cost.

Per order	1 unit, consumer price	5 units, −8% business tier	20 units, −15% tier
Units	1	5	20
Price per unit	Baseline	−8%	−15%
Revenue vs baseline unit	1.00×	4.60×	17.00×
Referral fee	Scales with price	Scales down 8%	Scales down 15%
Landed unit cost	Fixed	Unchanged per unit	Unchanged per unit
Effect on contribution per unit	Baseline	Falls	Falls further
Effect on contribution per order	Baseline	Rises if margin absorbs it	Can fall below baseline ×20

Three practical consequences follow.

Set tiers from contribution, not from what looks generous. The question at each tier is whether contribution per order beats contribution at the tier below, given the order sizes you actually expect. A tier nobody reaches costs nothing; a tier everybody reaches at negative incremental contribution is expensive and invisible.
Rule-based business pricing needs a floor. A rule that tracks the consumer price down through a promotion compounds two discounts. If you run campaign pricing, decide explicitly whether business pricing follows it.
Watch for consumers you already had. An Amazon Business account is free to open and sole proprietors hold them, so some share of your business-price orders will be buyers who would have paid full price. That is a real cost of the switch, and it appears nowhere as a line item.

For the broader picture of how fee structures stack up in Japan, our breakdown of Japan ecommerce pricing models covers the agency and platform side of the same maths.

How Big Is the Demand, Really

Be careful with numbers here, including ours. Amazon Business Japan launched in 2017, and in a December 2024 interview with ITmedia, Amazon Business Japan's leadership stated that more than 70% of companies listed on the Tokyo Stock Exchange Prime market are registered, alongside similarly high penetration among major companies in their respective industries. Those are company-stated figures in trade media, not audited disclosure — and, the part that matters, registration is not purchasing: an account tells you the channel is available to that company, not that it buys your category through it.

We deliberately do not quote a Japan business-customer count: figures circulate, they are not consistently sourced, and an untraceable number is worse than none in a business case.

The usable signal is your own. The analytics dashboard segmenting business versus individual sales is free with the programme and answers the only question that governs the decision: are corporate buyers already buying from you at consumer prices? If yes, you are deciding how much to concede to accelerate demand that exists. If no, you are deciding whether to fund an experiment. Those are different decisions and they deserve different levels of discount.

One scope note: this article is Amazon-side only. We are not setting up a symmetric comparison against Rakuten, because we could not verify a comparable opt-in corporate-pricing layer on Rakuten Ichiba of the kind described here. If you are weighing Amazon's own B2B routes against each other, first-party supply is covered in our comparison of Vendor Central versus Seller Central.

A Decision Framework

Rather than a revenue threshold we would be inventing, work through these in order. The first "no" is your answer for now.

Is your product plausibly bought by an organisation in multiples? Consumables, facility and office supplies, professional-use stock, anything repurchased on a cycle. If your product is a considered single-unit consumer purchase, corporate pricing mostly discounts buyers you already had.
Does your data already show business-segment orders? Turn on the analytics view and look before you concede anything. Existing demand converts this from a bet into an optimisation.
Are you registered as a qualified invoice issuer, or willing to be? If not, and your buyers are Japanese businesses that can credit tax elsewhere, the pricing switches will not carry you. Settle this with a 税理士 first.
Have you priced the compliance, not just the discount? Tax agent, general-method filing, no simplified regime. If that annual cost exceeds the contribution you expect from B2B orders, the answer is no regardless of how attractive the feature set looks.
Do you know your contribution margin per unit after referral and fulfilment fees? If not, you cannot set tiers, and a tiered discount set without it is a guess that scales.

A brand that answers yes to the first three is usually right to configure at least business pricing and the analytics view. A brand that answers no to the first is better served by leaving all of it off and spending the same attention on the consumer-side fundamentals.

A Practical Sequence

For brands that get through the framework, the order matters more than the speed.

Confirm your programme and consumption-tax status in Seller Central rather than assuming either.
Turn on the analytics view and observe for a full cycle before conceding any price. It costs nothing and it is the only evidence you will get that is about your own products.
Resolve invoice registration with a 税理士 in parallel — the tax agent appointment and the registration itself take time that is not yours to compress.
Set business pricing on a shortlist, not the catalogue. Start with SKUs where multi-unit purchase is plausible and margin has room. A blanket percentage across the catalogue is the most common way to give away margin on SKUs no business was going to buy.
Add quantity tiers only where you have a real order-size hypothesis, and check contribution per order at each tier before publishing it.
Reserve business-only offers for SKUs that genuinely should not be consumer-facing, since that switch removes reach — then review after a quarter against contribution, not units. Units will be up; that is not the question.

What LAUNOVA Does — and Where the Line Is

LAUNOVA runs Amazon Japan seller support for overseas brands as a Japanese-language operating layer: catalogue and listing work, pricing configuration you have approved, the Japanese side of corporate buyer enquiries, and the reporting that shows whether a tier is actually paying. Configuring the switches described here, and reviewing them against contribution rather than units, is ordinary scope for that work.

What we do not do is the tax side. We are not a tax firm, we do not act as your 納税管理人, and we will not advise you on whether to register as a qualified invoice issuer or what it will cost — that belongs with a Japanese 税理士, and any operator who says otherwise is describing a service they should not be selling. We also do not set your margin or take pricing authority you have not delegated in writing.

And the unhelpful-sounding thing, because it is true more often than not: for many foreign brands the right answer here is "not yet." If your product is not bought in multiples by organisations, the compliance cost of becoming creditable will outrun the B2B contribution for a long time. We would rather say that than configure something billable.

For a real answer on your catalogue, send what you sell, whether you are already invoice-registered, and whether you have seen business-segment orders. We will tell you whether this is a lever or a distraction. Get in touch, or read how our Japan EC operations are scoped if you want the delivery model first.

Japan Consumption Tax for Foreign Sellers

The ¥10 million threshold, the tax agent requirement and the Qualified Invoice System that gates this decision.

Vendor Central vs Seller Central

The other Amazon Japan question about who you are selling to — and who sets the price.

Amazon Japan for Foreign Sellers

Account setup, FBA and listing localization — the consumer-side fundamentals that come first.

Sources

• Amazon Business as Amazon's B2B marketplace; use of the Amazon Business Seller Program once registered for a Professional Selling Plan, at no additional cost to an existing Professional seller; ¥4,900 per month excluding tax plus category referral fees; features listed as business pricing and quantity discounts, business-only listings, an analytics dashboard segmenting business versus individual sales, and 請求書払い — Amazon's own seller-facing pages (sell.amazon.co.jp, English and Japanese versions of the Amazon Business programme page). Primary source.
• Amazon Business customers can identify which products are sold by JCT-registered sellers, and sellers without a registration number on file risk business customers ceasing to buy — Amazon seller-facing guidance on the same page. Primary source. The badge presentation when signed in with a business account is described in Seller Central seller-forum discussion, second-hand; confirm the current display in your own account.
• Quantity discounts configurable as percentage-off or fixed per-unit price with up to five tiers, and the requirement that discount depth increases as quantity tiers increase for the offer to be valid — Amazon Seller Central help on business prices and quantity discounts. Amazon's own help documentation, read in the English locale. The rule-based "set business price a fixed percentage below the consumer price" behaviour is described in Japanese seller and agency guides, second-hand. Verify both against your own Seller Central before configuring.
• Business-only listings (法人限定出品) purchasable only by Amazon Business account holders and not shown to consumer buyers — Japanese seller and agency guides, second-hand, consistent with Amazon's own listing of the feature. Amazon publishes no mandatory discount depth, and none is asserted here.
• Qualified Invoice System in force since 1 October 2023; input tax credit conditional on holding a qualified invoice from a registered 適格請求書発行事業者 — National Tax Agency guidance, carried over from our published Japan consumption tax guide rather than re-sourced here.
• Transitional measure on purchases from non-registered suppliers, as revised by the 令和8年度 (2026) tax reform: creditable proportion of 80% to 30 September 2026, 70% from 1 October 2026 to 30 September 2028, 50% to 30 September 2030, 30% to 30 September 2031, and nil from 1 October 2031; ceiling on tax-inclusive purchases reduced from ¥1 billion to ¥100 million a year with no credit on the excess, measured per single non-registered supplier (一のインボイス発行事業者以外の者からの課税仕入れ) rather than across all such suppliers — National Tax Agency, 令和8年度税制改正特集 (invoice system). Primary source. Because the unit is per supplier, the ceiling rarely binds on a single marketplace seller relationship, and it is not relied on here as an argument. The earlier, pre-reform schedule (80% then 50% then nil by October 2029) is superseded and is not used here. The inference that buyers often prefer a blanket registered-issuer policy over tracking partial credits is flagged in the text as our own reading, not a documented survey.
• Registration route for foreign businesses: 適格請求書発行事業者の登録申請手続（国外事業者用）, form D1-65, filed with the インボイス登録センター, with conditions attaching to the 納税管理人 notification such that failure to file it can cost the registration — National Tax Agency (nta.go.jp), procedure page D1-65. Primary source.
• 令和6年度 (2024) tax reform for 国外事業者, applying to taxable periods beginning on or after 1 October 2024: no 簡易課税制度 and no 2割特例 for a foreign business without a permanent establishment on the first day of the taxable period; aggregate payroll no longer usable in place of taxable sales for the ¥10 million 特定期間 test — Japanese tax-firm commentary on the reform (Yamada & Partners; Koyano CPA Group), consistent across sources. Professional commentary on the reform, not the statute text; confirm your own position with a 税理士.
• More than 70% of Tokyo Stock Exchange Prime-listed companies registered with Amazon Business; Japan launch in 2017 — statements by Amazon Business Japan leadership reported by ITmedia Business Online, December 2024. Company-stated figures in trade media, not audited disclosure; registration is not purchasing, and no Japan business-customer count is quoted here because circulating figures could not be traced to a consistent source.
• The three-column margin table is illustrative arithmetic showing the direction of the effect, not a benchmark, survey or quotation. It contains no LAUNOVA client data and no assumed cost of goods; run it with your own numbers.
• Buyer non-payment risk allocation under 請求書払い is not asserted here — we could not verify an authoritative seller-facing statement of it and have flagged it as something to confirm in Seller Central.

Should Your Amazon Japan Store Chase Corporate Buyers?