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Social media for UK finance affiliates: grow engagement without breaking the rules

Social media is where many people now first hear about a savings account, a budgeting app or an investment platform. For affiliate marketers in UK personal finance, that is an opportunity, and a responsibility. Money content can change people's lives for better or worse, and the rules reflect that.

This guide covers how to choose platforms, what kind of content builds lasting trust, and the two sets of UK rules every finance affiliate needs to understand: advertising disclosure from the ASA, and financial promotion rules from the FCA. It is general information, not legal advice.

Choose platforms by audience, not by hype

You don't need to be everywhere. Pick one or two platforms where your audience already spends time and where your format fits:

Short-form video (TikTok, Instagram Reels, YouTube Shorts) suits quick explainers: "what an ISA is in 60 seconds".
Long-form video (YouTube) suits walkthroughs, comparisons and Q&As that people search for later.
Text-led platforms (LinkedIn, X, Threads) suit commentary, threads and links to deeper articles.
Communities and newsletters build the most loyal audiences, but grow more slowly.

Commit to a realistic posting schedule you can keep up for months. Consistency matters more than volume.

Content that builds trust

In personal finance, trust is the product. Posts that tend to earn it:

Plain-English explainers of concepts people find confusing: tax bands, ISAs, pensions, credit scores, overdrafts.
Worked examples with clearly stated assumptions, rather than screenshots of other people's returns.
Balanced comparisons that include downsides, fees and who a product is not right for.
Links to official sources such as GOV.UK, the FCA or MoneyHelper, so people can check for themselves.
Corrections. When rules change or you get something wrong, say so publicly. It builds more credibility than it costs.

Avoid the tactics that erode trust: promises of fast, easy wealth, invented urgency, income screenshots, and promises about returns.

Rule one: make it obvious that ads are ads

The Advertising Standards Authority (ASA) and the Committee of Advertising Practice (CAP) apply the UK advertising code to affiliate marketing. Their affiliate marketing advice is direct: when you sign up to a brand's affiliate scheme, you are entering an agreement to promote that brand, and your affiliate content must be obviously identifiable as marketing. The ASA has ruled against content that wasn't clearly labelled with an identifier such as "#Ad".

CAP and the Competition and Markets Authority publish a joint Influencers' guide that sets out when content should be disclosed, how to make clear that ads are ads, and specific advice on affiliate marketing. In practice:

Put a clear label such as "Ad" at the start of the post or video, not buried at the end.
Disclose on every post that carries an affiliate link or paid placement, not just once in your bio.
Use the platform's own paid-partnership tools where available, as well as your own label.
Don't rely on vague terms like "sp", "collab" or "thanks to" on their own.

Rule two: financial promotions are regulated

Finance affiliates face an extra layer of rules that most other niches don't. Under section 21 of the Financial Services and Markets Act 2000, a person must not, in the course of business, communicate an invitation or inducement to engage in investment activity unless they are authorised, the promotion is approved by an appropriate authorised firm, or an exemption applies.

The FCA's guidance on financial promotions on social media (FG24/1) says that unauthorised persons, such as social media influencers, who promote a regulated financial product or service without approval of an appropriate FCA-authorised person may be committing a criminal offence. The FCA Handbook's perimeter guidance states that this offence carries a maximum of two years' imprisonment and an unlimited fine.

FG24/1 also says promotions must be fair, clear and not misleading, give a balanced view of benefits and risks, and in some cases carry prescribed risk warnings that must not be cut off by a platform's design. Firms that work with affiliates are expected to monitor them, so a reputable programme should give you approved wording and tell you what you may and may not say.

What this means in practice:

Before promoting investments, crypto, credit or insurance, ask the firm whether your content needs its approval and get it in writing.
Stick to approved claims and include any required risk warnings in full.
Educational content that doesn't encourage people to take up a specific product is lower risk, but the line can be fine. If in doubt, ask.
Walk away from programmes that encourage you to promise returns or skip warnings.

Measuring what works

Engagement is useful, but it isn't the goal. Track:

Saves and shares, which signal content people find genuinely useful.
Click-through to your site or newsletter, where you control the relationship.
Conversions per programme, using the dashboards affiliate networks provide.
Refunds and complaints, which tell you when a product isn't a good fit for your audience.

Drop the posts and programmes that drive clicks but produce unhappy customers. They damage the trust everything else depends on.

Checklist

One or two platforms chosen, with a schedule you can keep.
Every affiliate or paid post labelled clearly and upfront.
Written confirmation from each finance firm on whether your promotions need approval.
Required risk warnings shown in full.
Official sources linked for any facts or figures.
Results reviewed monthly, including complaints and refunds.

Frequently asked questions

Do I need to label affiliate links on social media?

Yes. The ASA treats affiliate marketing as advertising, so it must be obviously identifiable as an ad. Label it clearly and upfront, before people engage with it.

Can I promote credit cards, investments or crypto as an affiliate?

Be careful. Many financial products are subject to the financial promotion restriction. The FCA warns that unauthorised influencers promoting regulated products without approval from an authorised firm may be committing a criminal offence. Check with the firm whose product it is that the promotion is approved.

Is saying "link in bio" enough disclosure?

No. Disclosure needs to be clear in the content itself. Hiding an affiliate relationship behind a vague phrase, or in a list of hashtags, risks breaking the rules.

Sources and further reading

Facts checked on 20 October 2026. Spotted an error? Tell us and we will correct it.