How to Run an Influencer Marketing Campaign: The 2026 Step-by-Step Guide

TL;DR: How to run an influencer marketing campaign comes down to eight phases executed in order over roughly 60-90 days: set one measurable goal, source and vet creators (including where their audience actually lives), sign a contract that clears the right country's legal threshold, brief clearly, execute and monitor, release payment only after approval, then measure against the goal you set in Phase 1. Skip a phase and the ones after it inherit the gap.

Most guides to influencer marketing campaigns read like a single event: pick creators, post content, check results. In practice it is a sequence of gated decisions, and the gate that gets skipped most often on cross-border European campaigns is not creative approval — it is figuring out, before a contract is signed, which country's disclosure law and contract-value threshold actually apply. That gate depends on where a creator's audience lives, not where the creator lives, and it is the single biggest structural difference between running a campaign on a US-only platform and running one on a marketplace built for the EU from day one.

This guide walks all eight phases in the order a marketer actually executes them, with the compliance and payment mechanics a European campaign has to clear that a generic "5 steps to influencer marketing" listicle skips entirely. If you want the condensed checklist version once you already know the sequence, see our influencer campaign planning checklist.

Setting goals for influencer marketing is the first and most commonly rushed phase, and the mistake compounds through every later phase: a campaign optimizing for awareness, traffic, leads and sales simultaneously cannot be evaluated against any of them cleanly, because the measurement window and the creator profile that best serve each objective are different.

Pick one primary objective — brand awareness, engagement, website traffic, lead generation, or direct sales — and set the measurement window to match it before sourcing a single creator: awareness campaigns settle within 7-14 days of the final post, direct-attribution conversion campaigns need roughly 30 days, and considered purchases (SaaS, finance, premium goods) can take up to 90 days to show in the data. The objectives of influencer marketing that get stated out loud in a brief ("build brand awareness," "drive engagement") are rarely the same as the objectives a finance team actually measures against a quarter later, so write down the specific number now: target impressions and reach for awareness, target engagement rate and total interactions for engagement, target ROAS and cost per acquisition for sales.

Budget follows the objective, not the other way around. A common split across the campaigns we see structured on Collabios is roughly 70% creator fees, 15% product and logistics, and 15% held in reserve for amplifying whichever creators' content outperforms once results start coming in — set that reserve aside now rather than discovering mid-campaign that there is no budget left to boost a post that is working.

Write the ideal-creator profile down before browsing a single profile: platform, follower range, niche, audience demographics, content style, and explicit deal-breakers. Source 15-20 candidates against that profile using a marketplace search filtered by niche and platform, hashtag research on the target platform, a look at which creators your named competitors have already worked with, and referrals from your own network.

The instinct to rank candidates by follower count first is the most common early mistake. A creator with 20,000 tightly relevant followers in your actual target market consistently outperforms one with 200,000 loosely related followers, because relevance drives the engagement and conversion numbers a campaign is ultimately measured against in Phase 8. Narrow the 15-20 sourced candidates to a shortlist of 5-8 ranked on fit, then confirm availability and a rough rate range with each before moving to vetting.

Standard creator vetting checks three things: whether the audience is real (not bot-inflated), whether engagement is authentic, and whether the content quality and posting consistency match the brief. Annual fraud studies from HypeAuditor and benchmark reports from Influencer Marketing Hub both treat fake-follower and engagement-fraud detection as a baseline vetting step, not an optional one, and that check belongs in every campaign regardless of market.

Running a campaign that touches European audiences adds a fourth check that a US-only platform has no reason to build: where the creator's followers actually live, by country, not just their language or the creator's own home base. This matters because disclosure obligations and contract-value thresholds attach to the audience's country. A German brand hiring a Berlin-based creator whose followers are 60% French is on the hook for French disclosure wording under Loi 2023-451, even though neither party in the deal is based in France. On Collabios, audience-country distribution is a vetting field alongside follower authenticity and engagement rate — checked before a contract is drafted, not discovered after a post goes live and a regulator asks who is liable.

Shortlist 5-8 candidates through this vetting pass, then move to contracting with the audience-country data already in hand — it determines which contract template and disclosure wording the next phase actually needs.

This is the phase a checklist built for a single market cannot cover, because the trigger for "do we legally need a written contract" and "what sanctions apply if we skip disclosure" changes by country, and the country that matters is the audience's.

Five thresholds recur most often across Collabios campaigns touching European audiences:

Practically, that means the contract you draft in Phase 4 needs three inputs from Phase 3's vetting: the audience's country distribution, the creator's follower count on the platform in question, and whether the deal value crosses that country's threshold. Beyond the country-specific trigger, every contract needs the same core terms regardless of market: deliverables and deadlines, payment terms, content-approval process, usage rights and duration (typically 25-50% of the base rate for 3-6 months of paid usage beyond the organic post), exclusivity period if any, and a revision policy. If a campaign also reaches a US audience, FTC 16 CFR Part 255 §255.5 applies concurrently — build the disclosure language to satisfy both regimes in the same post rather than running two versions.

A brief that survives contact with a creator's actual production process has four parts: a one-paragraph brand overview assuming the creator knows nothing about you, the campaign concept and the story it should tell, precisely specified deliverables (format, quantity, aspect ratio, minimum length, posting window), and a short list of mandatory elements — product mention, required hashtags, the disclosure wording locked in Phase 4, and the call to action. Keep mandatory elements to the minimum that actually matters; overloading this list is the fastest way to get content that reads like an ad script instead of a creator's own voice, which is usually the reason the brand hired that creator in the first place.

Set a review timeline now, not after the first draft arrives: require draft content at least 5 business days before the scheduled posting date, giving room for one feedback round without rushing either side.

Confirm the posting schedule with each creator 24 hours out, then check every post the moment it goes live: correct disclosure label, working links, valid discount codes, content matching the approved draft. An error caught in the first hour is a two-minute fix; the same error discovered three days later is a compliance incident.

Engage from the brand account promptly once content is live — it signals distribution-worthy engagement to the platform algorithm on top of whatever the creator's own audience contributes. Track the KPI set in Phase 1 daily for the first week using whichever tracking infrastructure (UTM parameters, unique discount codes, dedicated landing pages) was set up during contracting, and if a specific creator or format is clearly outperforming the rest, this is the moment to spend the amplification reserve from Phase 1 behind it.

Payment is where most influencer-marketing platforms treat the transaction as done the moment a contract is signed or an invoice is sent — which is exactly backwards, because it is also where the two most common disputes in the industry originate: a brand that never pays after content ships, and a creator who never delivers after being paid upfront. Both problems have the same fix, and it is a payment mechanism, not a stronger contract clause.

On Collabios, a brand's payment for a collaboration is held by the platform once the contract is signed and only released to the creator after the brand has reviewed and approved the delivered content against the brief. Neither side has to advance trust on faith: the creator has a binding, funded commitment before producing anything, and the brand does not release funds until the deliverable actually matches what was briefed. There is no subscription fee and no agency-style retainer — brands and creators pay per collaboration, which is a materially different cash-flow shape than a monthly platform fee or a 15-25% agency commission charged regardless of campaign outcome.

Practically, this phase closes the loop opened in Phase 4's contract: the usage-rights terms, the payment schedule, and the approval process should all point to the same release condition, so nobody is negotiating "when does the money move" after the content is already live.

Collect platform-native analytics from every creator 7-14 days after their last post — reach, impressions, engagement breakdown, profile visits, link clicks — because platform-native numbers are consistently more accurate than third-party estimates. Aggregate those into the campaign-level KPI you set in Phase 1: total reach, engagement rate, cost per engagement, conversion rate, ROAS.

Then break results down per creator, not just at the campaign level. The point of Phase 3's vetting and Phase 2's sourcing was to predict which creators would perform — Phase 8 tells you whether that prediction held, and which creators are worth a repeat booking versus which were a one-off test. Document what worked and what did not in a short retrospective; it is the single most valuable output of the whole 60-90 day cycle because it makes Phase 1 of the next campaign faster and more accurate.

Everything above reads brand-first because that is the primary audience for this guide, but a creator sits on the other side of every one of these eight phases, and three of them look different from that seat. In Phase 3 (vetting), a creator being vetted for audience-country fit should have that same data ready to share proactively — platform-native audience-location breakdowns build trust faster than a brand having to ask. In Phase 4 (contracting), a creator should know which threshold applies to their own deal before signing: if the brand is a French company and your audience is majority-French, a written contract is not optional above €1,000 HT, and that protects the creator as much as the brand. And in Phase 7 (payment), the same escrow-style mechanism that protects a brand from paying for undelivered content also protects a creator from delivering content and never getting paid — the funding commitment exists before you produce anything, and approval, not the brand's cash-flow calendar, is what releases it.