The archive · Marketing & Growth · Marketing decision · 2018–2019
PayPay gives away ¥10 billion in cashback to jump-start Japan's QR payment habit
A new payment app with zero users spent ¥10B on 20% cashback — 4M users in four months and 10x the merchants.
PayPay Corporation
What it had to solve
PayPay, the SoftBank and Yahoo Japan joint venture, launched its smartphone QR payment service in Japan in December 2018, asking consumers to switch payment behaviour for an unproven app. To make the first experience happen at scale, it needed both sides of the market at once — shoppers willing to scan and merchants willing to accept a new terminal.
How it works
When PayPay launched in December 2018, Japan was still a cash-first market and the app had no installed base. The SoftBank and Yahoo Japan joint venture's answer was not an advertising campaign but a bankroll: it promised to give away ¥10 billion — 20 per cent cashback on every purchase, and occasional full refunds — until the money ran out.
The mechanics turned marketing spend into product trials. Every discount was paid as PayPay balance inside the app, so each transaction taught users to scan, pay and return. Demand exhausted the ¥10 billion in ten days; PayPay eventually distributed about ¥11.5 billion, and four months after launch it had more than four million registered users — the fastest growth of any Yahoo Japan service — with active merchants up about tenfold.
A second ¥10 billion round in February 2019 capped each rebate at ¥1,000 and tilted rewards toward small daily purchases, explicitly targeting habit rather than novelty. The rush also surfaced operational problems — outages and card fraud — that forced tighter security limits, but the underlying bet held: spend money on real first experiences, and the market's payment behaviour starts to move.
Why it lands
- Paying users to transact created thousands of authentic first experiences instead of one broadcast moment.
- Cashback arriving as in-app balance made the next purchase the natural next step, chaining trials together.
- Merchants multiplied because customer demand preceded their adoption — shoppers brought the terminals with them.
- A finite, well-publicised pot gave the giveaway urgency that a permanent discount could never generate.
What it did
Within four months of launch, registered users surpassed four million — the fastest growth of any service ever offered by investor Yahoo Japan — and the number of active merchants accepting PayPay payments multiplied about tenfold versus before the campaign. The rush also exposed real costs: four system outages and credit-card fraud forced new security limits, which PayPay treated as part of the price of scaling a new habit.
What you can take
To change a payment habit, buy the first experience rather than the impression: when the reward is a real transaction, every giveaway doubles as onboarding.
Since then
PayPay's second ¥10 billion campaign ran from February to May 2019 with a lower per-transaction ceiling designed for daily coffee-and-lunch spending, and the company publicly acknowledged the first round's outages and fraud before tightening security. The pattern — big, time-boxed cashback rounds to seed a payment habit — became PayPay's signature as it pressed on in Japan's cashless race.
Sources
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