If you’re evaluating Japan and someone has told you “you have to be on LINE,” they’re half right. LINE is the single most-used communication app in the country, and for the right business it’s one of the most efficient ways to reach and keep Japanese consumers. But the product you’ll read about in most English guides — a standalone “LINE Ads” dashboard — is being merged into a unified platform in 2026, which changes how you should plan.
A disclosure up front: LOads is a bilingual Japan marketing agency that runs platforms like this for overseas companies. Read this as an operator’s view you should pressure-test, not a neutral encyclopedia.
Key takeaways (the 20-second version):
- Fit: a B2C mass-consumer channel. If you sell to Japanese consumers it belongs in your plan; if you’re pure B2B or niche, it usually doesn’t lead.
- 2026 change: the standalone “LINE Ads” product folds into LY Ads Display Ads in spring 2026 — a reason to start now with a migration-ready partner, not to wait. Placements, targeting, creative, and audiences carry over.
- Cost: no reliable public CPC benchmark exists. Start small — a first test can run on a prepaid account — while a sustained program, in our experience, runs from around ¥1M/month in media (our reference, not a market rate).
- Foreign-company access: an Official Account is fairly DIY-friendly; running ads at scale usually needs a local partner for account-of-record and JPY billing.
- Next step: unsure whether LINE fits, or whether to wait for the cutover? That’s what the free pre-consultation is for.
What LINE actually is (and why Western analogies fail)
In the West, a messaging app is a narrow tool. LINE is not that. In Japan it’s a super app: a single app bundling messaging with a news feed, short video, manga, payments, and stickers, functioning as the default daily communication rail for most of the country. That breadth is why “advertising on LINE” can mean reaching someone in a chat list, a video feed, or a news article — all inside one app.
The reach is genuinely large. Per DataReportal’s Digital 2026: Japan report (data referencing October 2025), LINE is the country’s number-one social platform, reaching roughly 99 million people — about 80.5% of the population; its operator, LY Corporation, separately reports around 100 million monthly active users, so two independent figures land in the same place. DataReportal flags one caveat: these are platform-reported figures that “may not represent unique individuals,” so treat the number as a scale indicator, not a precise headcount. Even discounted, no other channel in Japan gives you that consumer coverage in one place — and LINE also leads in Taiwan and Thailand, per Business of Apps.
LINE Official Account vs. LINE Ads: two things, not one
This is the distinction most primers blur, and it matters for how you budget.
- A LINE Official Account (LINE公式アカウント) is your brand’s verified presence inside LINE — broadcast messages, a “rich menu” (a tappable menu pinned to the chat), coupons, and 1:1 chat. It’s closer to an owned CRM channel than to paid media.
- LINE ads are the paid, auction-bought placements across LINE’s surfaces that acquire attention and, often, grow that Official Account.
They work as one funnel, and this is what overseas teams underestimate. Ads bring people in; the Official Account keeps them. The common Japanese pattern: an ad (or a branded sticker) earns a new “friend” — LINE’s word for a follower — and then rich menus, coupons, and broadcasts do the retention. Plan the ads without the Official Account and you’re paying to acquire an audience you can’t keep.
One budgeting nuance overseas teams miss: the Official Account is priced per message sent, not per follower, so retention carries an ongoing cost that scales with friend-base size and broadcast frequency — not just the one-time cost of acquiring each friend. Budget “acquire then retain” as two lines, not one.
| LINE Official Account | LINE ads (paid) | |
|---|---|---|
| Role | Owned CRM / retention | Paid acquisition / awareness |
| You pay for | Messages sent (tiered plans) | Auction placements (CPC/CPM/etc.) |
| Primary job | Keep and re-engage customers | Reach new people, grow friends |
| Needs the other? | Ads make it grow faster | An Official Account is the natural landing point |
This article stays on the paid, auction-bought side. For the owned/CRM half — rich menus, coupons, broadcast strategy, and the plan tiers and message quotas — see LINE marketing for business.
The 2026 change you can’t ignore: LINE Ads becomes LY Ads Display Ads
Most English guides haven’t caught up with this. LINE and Yahoo! JAPAN are both part of LY Corporation — the LINE–Yahoo group formed after their 2023 integration — so their advertising products are being unified.
Per the official announcement from LY Corporation’s business site, “LINE Ads (including Talk Head View)” and “Yahoo! JAPAN Ads Display Ads” are being merged into a single product, LY Ads Display Ads, launching in spring 2026. What matters for planning: the standalone LINE Ads product goes away (users must migrate — no “keep the old dashboard” path), and it becomes one auction across LINE + Yahoo! JAPAN inventory with shared audience data. That’s meaningful because Yahoo! JAPAN remains a top portal and search property in Japan (unlike the global web), so its inventory joining LINE’s is a real expansion of reach, not a rename. LY says finer details and end-of-service timing will come roughly two months before launch.
You’ll see specific dates on English agency blogs — a dashboard cutover in April 2026, delivery stopping around October, deprecation by March 2027 — but these are not confirmed in LY’s own announcement, which commits only to a spring-2026 launch. Verify them against LY’s official news page before committing budget.
Is the migration a reason to wait? No — and here’s why that matters for your money. If you’re entering Japan in 2026–2027, don’t build a plan around the legacy dashboard; plan for LY Ads and make “migration-ready” a question you ask any partner. Crucially, the work you invest before the cutover isn’t thrown away: your Japanese creative, your audience and retargeting data, and — critically — your Official Account and every friend you’ve accumulated all carry through. Friends live inside the Official Account product, which is not the thing being merged, so the consolidation doesn’t touch your acquired audience. What changes is account and dashboard plumbing, which a migration-ready partner handles. Net: launch now, build now, let your partner manage the cutover — waiting only costs you friends and learnings you’d be banking today. (Our Yahoo! JAPAN Ads guide covers the merger’s other half.)
LINE ad formats: where your ads can appear
LINE’s inventory spans its super-app surfaces. A few placements have no clean Western equivalent, so they’re worth knowing by name (names and availability are in flux under the LY Ads unification — verify in-platform):
- Talk Head View — a premium takeover at the top of the chat (“Talk”) list, LINE’s most-opened screen. Closest Western analog: a YouTube masthead. Big reach, big cost — a brand-awareness buy for a launch splash, not a performance unit. Overseas clients often assume “top of chat” means efficient performance inventory; it’s a reservation-style brand buy, so save it for a launch moment.
- Smart Channel — the ad slot pinned above your conversations in the chat-list feed. Closest Western analog: a native banner in the most-visited screen of the app.
- LINE VOOM ads — placements in LINE’s short-form vertical video feed (successor to the old Timeline). Closest Western analog: TikTok / Reels in-feed video — your always-on performance and vertical-video home.
- LINE NEWS ads — placements in LINE’s news surface. Closest Western analog: ads inside a high-traffic news app like Apple News — a large property in Japan. (Wallet, Manga, and other in-app surfaces add further reach.)
For targeting, LINE supports the levers you’d expect: demographics, interest and behavioral segments, retargeting your own site visitors, and custom/lookalike audiences. Under LY Ads, that data pools with Yahoo! JAPAN’s — the strategic point of the merger.
What LINE ads cost (a caveated orientation)
We won’t refuse the money question, but we’ll be honest about the evidence. LINE runs on an auction, so real costs depend on format, targeting, and competition. English agency blogs circulate figures like a ¥24 CPC, ¥100 CPM, and a ¥1,000/day minimum — but these are unsourced and not published by LINE or LY. Don’t plan against them as benchmarks; treat them at most as a loose signal that LINE can be cheap per click relative to Western platforms, then verify in-platform.
So is there a cheap way in, or is it ¥1M/month-minimum? There’s a real on-ramp. Think of the budget as two numbers — a small learning spend to prove signal, then a sustained program once it works — and don’t assume you must jump straight to the second. Overseas advertisers can start on a prepaid account (funded in advance, often via a Japanese card), so a modest first test is possible rather than a full program on day one, and cost per friend for a consumer brand is often in the low hundreds of yen (a directional signal, not a benchmark). One caution: localize your creative first, or you’ll blame LINE when what failed was an English ad. For the full cross-channel picture, see what it costs to advertise in Japan.
For the sustained-program end, here’s our own operating reference — clearly labelled as such:
Our own reference, not an industry standard. In LOads engagements, a sustained consumer program typically runs from around ¥1M+ per month in media (roughly US$6,500–7,000) — a typical sustained program, not a minimum to try LINE at all. Our fee is fixed monthly; the ad-operations fee sits around 20% of media spend, dropping to about 15% above ¥10M/month. For context, Japanese ad-ops management fees commonly fall in a mid-teens-to-low-twenties percent-of-media band (a general market observation, not a published benchmark), so 20% is normal. Crucially, your budget is paid from your own ad accounts, so you keep account and data ownership.

Where LINE fits — and where it doesn’t
Most guides tell you when to use LINE; fewer, when not to. The honest cut:
| Your situation | LINE ads fit? | Why |
|---|---|---|
| B2C consumer brand, retail, F&B, apps, local services | Strong | Mass consumer reach + retention loop |
| Coupon-, loyalty-, or CRM-driven model | Strong | Official Account + ads = acquire-then-retain funnel |
| E-commerce / DTC selling to Japanese consumers | Good | Retargeting + dynamic formats + broad reach |
| Pure B2B (enterprise software, industrial) | Weak | LINE is a consumer channel; buyers aren’t there in that mode |
| Niche or globally-scattered audience | Weak | You pay for mass Japan reach you don’t need |
| Very early entry, small test budget, no Japanese creative yet | Sequence it | Localize + open the Official Account first, then a small test — not a flat no |
If you’re B2B, your channel mix looks completely different — start with B2B marketing for Japan market entry rather than with LINE. And to size LINE against the whole: per Dentsu’s 2025 Advertising Expenditures in Japan, internet advertising crossed 50% of total ad spend for the first time. Within that digital majority, LINE is one channel among several (Google, Yahoo! JAPAN, Meta) a consumer brand should weigh — a big lever, not the only one.
The foreign-company reality and how to launch
The mechanics of LINE ads are learnable; the friction for overseas entrants is elsewhere. Three things block launches. First, Japanese-language creative and landing pages are non-negotiable — LINE’s audience is domestic, so English won’t perform (website localization for Japan covers why machine translation isn’t enough). Second, account-holding is more nuanced than “you can’t”: an Official Account is DIY-friendly on the free plan without a Japanese entity, but the ads side limits overseas advertisers to prepaid accounts funded by a Japanese card, and post-pay pre-approval from abroad is difficult — which is where a local entity or an agency of record (an accredited partner that holds and operates the account for you) becomes the practical route at scale. Third, payment runs in JPY under Japanese tax rules: Japan’s Qualified Invoice System (インボイス制度), the consumption-tax invoicing regime introduced in 2023, affects how you pay an agency and reclaim tax. Without a Japanese entity, JETRO — Japan’s government inward-investment agency — is a credible starting point for establishing a presence.
So here’s the honest launch sequence, flagging what an in-house team can do alone versus where a local partner earns its fee:
- Create and verify your Official Account on the free plan. — In-house is fine; no Japanese entity needed, though verification is where support helps.
- Set up the LY Ads (formerly LINE Ads) account and establish JPY billing and invoice compliance. — Partner territory for most, per the prepaid/account-of-record constraints above.
- Build native Japanese creative and a localized landing page. — Mixed: you own the brief in-house, but the Japanese copy should be written natively (it also passes LINE/LY’s pre-launch review).
- Launch the first campaign with tracking, starting with an add-to-friend or retargeting objective and a modest prepaid test. — In-house can stand up tracking; a partner speeds media setup.
- Read the signal and optimize — watch friend-growth rate and cost-per-friend, then scale what works. Plan a test-and-learn window: setup and localization first, then roughly 4–8 weeks to a day-90 read on whether cost-per-friend is settling and friend growth holding — enough to decide whether to scale, adjust, or step back, instead of an open-ended “it depends.”
How to evaluate a Japanese LINE / LY Ads partner
Because the standalone product is dissolving into LY Ads, partner selection in 2026 is partly a migration-readiness test. Demand five things: LY Ads readiness (can they operate under LY Ads Display Ads today, not just legacy LINE Ads?); official LY sales-partner or accredited status; JPY reporting transparency, with spend paid from your accounts so you keep data ownership; native Japanese creative, not translated English; and the integrated funnel — they plan the Official Account alongside the ads, not paid media in isolation. For the broader “how to choose” logic beyond LINE, see our guide to choosing a marketing agency in Japan.
Where LOads fits
LOads is a bilingual Japan marketing partner, founded in 2018 in Fukuoka; we’ve supported 100+ companies entering or growing in Japan, and our CEO, Kosuke Tsunawaki, has 14+ years in digital marketing. Practically, we can hold and operate LINE / LY Ads and Official Accounts on your behalf, write native Japanese creative, report transparently in yen, and — because your media is paid from your own accounts — leave account and data ownership with you.
The pattern we see most: the platform is rarely what makes or breaks a launch. Teams that succeed treat ads and the Official Account as one funnel from day one — they don’t buy reach until they’ve decided how they’ll keep the friends it earns — and let cost-per-friend, not vanity impressions, tell them whether it’s working. Teams that struggle run LINE like a Western feed-ad channel and wonder why a growing friend base isn’t converting.
We work on a fixed monthly fee, and we’re candid when LINE isn’t the right first move (it often isn’t, for B2B). Not sure whether LINE fits your Japan entry — or whether to launch now versus wait for the LY Ads cutover? That’s exactly what the free pre-consultation resolves: one plain-English strategy call, no obligation.
Frequently asked questions
What is LINE and why is it so important for advertising in Japan?
LINE is Japan’s dominant messaging app, but it functions as a “super app” — combining chat with news, short video, payments, and stickers into the country’s default daily communication tool. Per DataReportal’s Digital 2026: Japan (data referencing October 2025) it reaches about 99 million people (roughly 80.5% of the population), more than any other social platform, and LY Corporation separately reports around 100 million monthly active users. That scale plus daily engagement is why it’s a core consumer advertising channel in Japan.
What happened to LINE Ads in 2026?
LINE and Yahoo! JAPAN are both part of LY Corporation, and their display advertising is being merged. Per LY’s official announcement, the standalone LINE Ads product is being consolidated into LY Ads Display Ads, launching in spring 2026, with LINE Ads users required to migrate. Exact end-of-service dates circulating on agency blogs aren’t confirmed in LY’s own announcement, so verify them there. The migration is not a reason to wait: your placements, targeting, creative, audience data, and your Official Account and its friends all carry through, so launch now with a migration-ready partner who handles the cutover.
How much does it cost to advertise on LINE?
LINE runs on an auction, so cost depends on format, targeting, and competition, and there’s no reliable public CPC benchmark — figures like a ¥24 CPC on agency blogs aren’t published by LINE or LY. But there’s a real on-ramp: overseas advertisers can start on a prepaid account, so you can run a small first test rather than commit to a full program, and cost-per-friend for a consumer brand is often in the low hundreds of yen (a directional signal, not a benchmark). For a sustained program, our own reference — not an industry rate — is media spend from around ¥1M/month. Start small to prove signal, then scale.
Can a foreign company advertise on LINE without a Japanese entity?
Partly. An Official Account is DIY-friendly on the free plan without an entity, and a first ads test can run on a prepaid account funded by a Japanese card. But running ads at scale — post-pay accounts, JPY billing under Japanese tax rules — is built around domestic entities, so most overseas companies without a Japanese subsidiary work through a local agency of record that holds the accounts and handles Qualified Invoice System compliance.
Is LINE advertising good for B2B or only B2C?
LINE’s strength is B2C — consumer brands, retail, apps, local services, and coupon- or CRM-driven models that benefit from mass reach plus a retention loop. For pure B2B (enterprise software, industrial sales), LINE is usually a poor first choice because business buyers aren’t in a purchasing mindset there, so build a different channel mix rather than lead with LINE.
Do I need Japanese-language creative and landing pages to run LINE ads?
Yes. LINE’s audience is domestic Japanese consumers, so English creative or landing pages underperform badly. You need native Japanese ad copy and localized pages — not machine translation — for the campaign to convert, and this localization is typically the real prerequisite before any spend goes live. For most overseas companies, this (alongside the account-holding and invoicing barriers) is why they run LINE through a local agency, ideally one already operating under LY Ads Display Ads rather than legacy LINE Ads.
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