Fiber Internet and Points|How the High Cashback Works and Switching/Choosing Without Losing Out

Strategy by theme Published:2026-05-30 Updated:2026-06-04 10 min read

Fiber Internet and Points|How the High Cashback Works and Switching/Choosing Without Losing Out

A new fiber-internet contract is one of the biggest single cashbacks in points. Providers spend heavily on advertising to win each new subscriber, and part of that comes back as a performance reward to users who route through a point site. When you're getting a new line — moving, marriage, a new household — simply routing the application can aim for tens of thousands of yen in cashback.

But choosing on cashback size alone can mean losing out via an expensive monthly plan or installation and cancellation fees. This guide organizes, as a judgment axis for not losing out, rough cashback for major fiber providers, what to look at when choosing a line, the pitfalls where rewards get rejected, and how to think about switching to make the most of "new-only" offers. For phone bundle discounts, see the Phone Upgrade & MNP Guide; for a line you use outside too, the WiMAX Guide; and for combining with a budget SIM, the Budget SIM Comparison Guide.

Rough Cashback for Major Fiber Providers

Even for the same line, the cashback varies by point site and timing. The table below is only a guide; always confirm the latest amount and conditions on Pointnavi before applying.

LineRough cashbackMain condition
FLET'S Hikari~¥15,000–25,000New contract + activation
au Hikari~¥30,000–45,000New contract + activation
docomo Hikari~¥25,000–35,000New contract + activation
SoftBank Hikari~¥20,000–30,000New contract + activation
Rakuten Hikari~¥15,000–25,000New contract + activation
NURO Hikari~¥30,000–45,000New contract + activation + 1 month of use

※ Amounts are reference values and vary monthly. The provider's own cashback and point-site routing cashback are separate things and can often be combined — worth remembering.

What to Look at When Choosing a Fiber Line

Choosing on the "total" including monthly fees and installation, and on usability — not just cashback — makes failure less likely. Compare on these points.

  • Coverage area / building type: House or apartment, and whether it's available in your area. Some lines like NURO Hikari have limited coverage.
  • Monthly data fee: How many months the discount lasts and the amount after; whether a phone bundle discount applies.
  • Installation fee: Whether a campaign waives it, and whether installments leave no remaining balance.
  • Cashback receipt conditions: Receipt may be months later or require an application. Mind forgetting to claim it.
  • Contract term / cancellation fee: Lock-in, the renewal month, and the cancellation fee when switching.
💡

Cashback and rebates are to "make a line contract you needed anyway worthwhile." What matters most is contracting a line that fits your home and usage at a sustainable total. Lured by big cashback into a line that's out of area, or an expensive monthly plan, defeats the purpose. The provider's cashback and point-site routing cashback are separate and can often be combined, so compare on the total including both. With a line that offers a phone bundle discount, you can also keep monthly fees down together.

Steps to Not Miss Routing Cashback

  1. ① Check the offer's eligibility"Earned on new contract + activation" is the basic. Having previously contracted with that provider is often ineligible. Check the eligible lines and conditions on Pointnavi.
  2. ② Route right before the application formProceeding straight from an application page open in another tab can miss cashback. After deciding the line and plan, re-enter from the point site right before applying to be sure.
  3. ③ Also claim the provider's cashbackSeparately from point-site cashback, providers often have their own rebate. If a receipt application is required, don't forget to claim it.
  4. ④ Wait for activation / pay with a cashback methodThe reward is confirmed after activation, and crediting takes 1–3 months. Paying monthly fees with a cashback method adds up. Tap Payment Guide, Expiry Prevention Guide.

Common Mistakes and How to Avoid Them

  • "Previously contracted, so ineligible as 'new'": Many offers are "new-contract only." Having previously contracted with that provider is ineligible. Check the eligibility before applying.
  • "Only contracted, canceled before activation — zero reward": The condition is basically "activation." Without progressing to installation completion, there's no cashback.
  • "Forgot to claim the provider's cashback": Receipt may be months later and require an application. Note the receipt timing and method.
  • "Chose only on big cashback; out of area / high monthly": Check area coverage and monthly fees. Compare on the total.
  • "Forgot to route and got zero cashback": Make re-entering from the point site right before the application form a habit.

How to Think About Switching to Use "New-Only" Offers

Since each line's high-value offers are mostly "new-contract only," switching at the end of a contract term tends to be more worthwhile for points than staying on the same line. But switching has caveats too.

  • Switch in line with the renewal month: A line with a lock-in charges a cancellation fee if you cancel outside the renewal month. Check the renewal month before moving.
  • Check the cancellation-fee / installation balance: Calculate whether the cancellation fee or remaining installation balance can be covered by the new contract's cashback.
  • Don't create a line gap: Spacing cancellation and new activation too far apart leaves a period without internet. Confirm the activation date and arrange accordingly.
  • About once every 2–3 years is the guide: Switching too often costs effort and cancellation fees. Cycle comfortably at the end of contract terms.

FAQ

How much cashback do point sites give for a fiber application?
It varies by offer and timing, but some lines are tens of thousands of yen per case — a high-value category in points. It can often be combined with the provider's own cashback, so compare including both. Treat cashback as a bonus and choose on area, fees, and the total — that's the premise.
Are apartments eligible?
Yes. Offers apply to apartment types (VDSL/LAN wiring, etc.) and house types. But the available line and speed change with the building's wiring method, so confirm your building is supported before applying.
Is it eligible under a family member's name?
It depends on the offer. If it says "applicant only" or "same-household family not allowed," follow that strictly. Misreading the condition can get the reward rejected and leave you without cashback.
How long until the reward is credited?
Fiber often takes 1–3 months from contract to activation, and the reward is confirmed after activation. Crediting takes time, so don't worry if it isn't immediate. Also confirm the receipt timing of the provider's cashback for peace of mind.
Is it worth switching even paying a cancellation fee?
If the new contract's cashback or routing reward exceeds the cancellation fee and installation balance, switching is worth it. Avoiding the fee by aligning with the renewal month is even better. Before switching, calculate the cancellation costs and the cashback you'd gain to decide.

This article was written from publicly available information on each point site as of May 2026. Cashback rates, campaign terms, and redemption rules can change without notice — always check each site's official page for the latest. This site uses each point site's referral program, but going through a referral link never changes the rate you receive.