- Why you should assume a URL in a caption will not take anyone anywhere
- How to split the work between three places: profile links, the Stories link sticker and Highlights
- Why referral posts should not become ads, and how disclosure and FSA warnings fit in
Quick answers
- Q: Can I put an affiliate link in an Instagram post?
- A: Plan on the assumption that a URL in a caption will not be tappable. The places a link actually works are the link field in your profile and the link sticker in Stories. Give your posts one job: getting people to your profile.
- Q: Can I boost an FX referral post as an ad?
- A: Don't. Meta's ad policies prohibit promoting binary options and CFDs. Build the path through your profile and Stories, which are not ads.
This article is written for people who refer others to Kingfin, and is shared for informational and educational purposes. It is not a recommendation for any reader to deposit funds or open an account. The service being referred is an offshore FX and investment-related platform, and investing carries the risk of loss. This piece reflects a general understanding as of October 2026 and does not guarantee any registration count or income.
Instagram won't let you link in posts
If you are used to X or Threads, this is where Instagram trips you up first. You can type a URL into a caption, but readers cannot tap it to open the page. At least, that is the assumption to design around.
So if you refer people on Instagram, the question is not "which post gets the link?" It is "how far do I bring people, and where do they finally tap?"
The audience is there. The last figure Meta published for Japan was more than 33 million monthly active accounts, as of March 2019, and no official update has followed. Plenty of people, then. Just don't assume links work the way they do elsewhere.
Build the path in three places
There are only a few places a link can live, and each does a different job.
You can add links to your profile. In April 2023 Instagram was reported to allow up to five. But the first thing a visitor sees is the top link. Pick the one page you most want people to read and put it first. Limits can change, so check the edit screen in your own app.
Stories can carry a link sticker. It used to depend on follower count and similar thresholds, but Instagram opened it to all accounts in October 2021. Small accounts can use it. Stories disappear after 24 hours, though, so use them for things you want tapped today, such as a new article or this week's notes.
Add a Story to a Highlight and it stays on your profile. Build shelves a newcomer can read in order: how it works, the risks, common questions. If you save a Story with a link sticker, check from your own account whether the link still opens for someone viewing it later.
A post's job is to get people to your profile
Since posts can't carry a working link, "sign up here" in a feed post or Reel does little. Ask a post to do one thing: make someone want to read a bit more from you.
Content that suits this: diagrams of how the system works, the step that tripped you up when you started, notes on what you checked before recommending anything. None of it requires you to say "you'll make money". A closing line of "More in the link in my profile" is enough.
And the profile link should not go straight to a sign-up page. Send people to an explainer on your own blog or note, let them read how it works and what the risks are, and only then link to the official sign-up page. One extra step means fewer taps, but the people who continue have read what they are getting into.
Three lines to set before you start
If you refer people to financial products on Instagram, decide these three things first.
When a post does well, boosting it is tempting. But Meta's ad policies prohibit promoting binary options and CFDs. Build FX and binary referrals where ads are not involved, in your profile and Stories. Trying to work around ad review is not a good use of your time.
Under Japan's stealth marketing rules, in force since October 2023, the party held responsible is generally the advertiser, and individual promoters are generally not covered (Consumer Affairs Agency Q&A). Even so, the baseline is to make it clear that you earn a commission. Do it in your profile, and also near the start of the text in any post or Story that touches on referrals. A #ad buried at the end of a pile of hashtags is not a clear disclosure.
Japan's Financial Services Agency warns that one common investment-fraud pattern on social media is promoting overseas FX firms with no Japanese registration while playing up cashback and similar perks. A post built around a "limited-time bonus" looks a lot like that pattern. Whether a firm is registered in Japan can be checked on the FSA's list of registered firms. If a reader asks, answer with the facts as they are.
An example profile
Put together, a profile might look like this.
Name: your name, or a handle plus a short tag such as "FX, explained"
Bio: Office worker. Notes on how FX works and what I've checked myself. Ad: I earn referral commissions. Profits are not guaranteed.
Link 1 (top): a "Start here" page on your blog covering how it works, the risks and your disclosure
Highlights: "How it works", "Risks", "FAQ", "My notes"
Keep the sign-up link inside the explainer page. It is a longer route than linking straight from your profile, but it cuts down on people who sign up without knowing what they are getting and then feel misled. Referral work gets harder to sustain with every one of those people.
Check how it works before you start referring
Kingfin's commission structure and terms are on its official site. Signing up is free. Earnings are not guaranteed.
Sign up to Kingfin for freeChecklist before you go live
Run through these five before you start posting.
Frequently asked questions
Disclosure: OlympTrade is an offshore platform that is not registered with Japan's Financial Services Agency (FSA), so Japan's investor protection schemes do not apply. This article is informational and educational content from Kingfin's English editorial team and does not guarantee any specific result or income. It is not a recommendation for any reader to deposit funds or open an account. It reflects a general understanding as of October 2026 and does not guarantee that effects or outcomes will repeat. Results from side-hustle or affiliate activity vary from person to person and take time to materialize. We cannot promise that anyone "will definitely earn" or that success is easy for everyone. Kingfin's affiliate program promotes FX and investment-related services, and trading carries the risk of loss. Results vary from person to person, and no income amount is guaranteed.
