Influx Blog

Tips and updates for influencers and agencies.

Engagement Rate Benchmarks by Niche on Instagram (2026)

A generic Instagram average won't tell you if your engagement rate is good. Here are the real benchmarks by niche and account size for 2026.

IRPF Withholding on Influencer Invoices: 15% or 7%?

Most influencers billing Spanish brands must apply IRPF withholding, but not always at the same rate. Here's when 15% applies, when 7% applies, and how to avoid mistakes.

When Should an Influencer Register as Self-Employed?

There's no set income threshold that triggers self-employment registration for influencers in Spain — what matters is whether your activity is habitual, as Spain's Supreme Court reaffirmed in 2026.

Modelo 130 for Influencers: How to Calculate Quarterly IRPF

Most Spanish instagramers and content creators must advance 20% of their income tax every quarter through modelo 130. Here's how to calculate it, when you're exempt, and how brand withholdings affect it.

How to Plan Brand Campaigns for Black Friday and Christmas

October is the month that decides whether your Black Friday and Christmas will be profitable or a pile-up of missed deadlines. Here's how to plan brand campaigns for peak season.

Brand Ambassador Contracts: How To Manage Them Step By Step

A brand ambassador deal is no longer a single post: it's months of deliverables, review rounds and staggered payments. Here's how to stay on top of all of it.

What to do if a brand ignores you after a collaboration

When a brand goes silent mid-collaboration, it doesn't always mean non-payment. Here's why it happens and how to react without losing the deal or your grip on it.

Fake engagement on influencers: how to spot it before you collaborate

81% of marketers ran into influencer fraud in 2026. Here's how to spot fake engagement by comparing ratios, niche benchmarks and red flags before closing a deal.

Brand Campaign Report: What to Include in 2026

Find out which metrics and structure a campaign report needs to actually convince a brand, backed by real 2026 benchmarks.

Influencer Whitelisting: What It Is and How Much to Charge in 2026

Whitelisting is one of the highest-value line items creators forget to invoice for. Here's what it is and what the market is actually paying in 2026.

How much to charge per post in 2026: an influencer rate guide

A practical 2026 guide to figuring out how much to charge per post, adjusting your price for niche and format, and pricing usage rights correctly.

How to Label Sponsored Posts and Avoid Influencer Fines

Spain's CNMC has ramped up enforcement against covert advertising in 2026. Here's how to label sponsored content correctly and avoid fines.

Diversifying income as a content creator in 2026

Relying only on brand deals is riskier every year. Here's what other income sources creators are adding in 2026, and how to keep control of all of them.

DAC7 for influencers: what platforms report to tax authorities

Since 2024, platforms automatically report creator income to tax authorities under DAC7. Here's what gets shared, when, and how to avoid a mismatch penalty.

TikTok Shop Taxes for Affiliates: A 2026 Guide for Creators

TikTok Shop has boosted affiliate income for creators. Here's a concrete, data-backed guide to declaring those commissions correctly in Spain.

Deductible expenses for influencers: what you can write off in Spain

A practical guide to which expenses influencers and content creators can deduct from their income tax in Spain, with real examples and mistakes to avoid.

How to manage several brand collaborations at once without losing track

More creators and agencies juggle several brands at once. Here's how to organise deadlines, deliverables and invoicing without losing control.

Self-employed quota for influencers in Spain: 2026 bracket guide

In 2026, self-employed influencers in Spain pay between €205.88 and €1,606.88 a month depending on real net income. Here's how the bracket system works.

What to do when a brand pays you late as an influencer

Late payments from brands are one of creators' biggest headaches. Here's a step-by-step guide backed by real industry data.

Spain's influencer law: what to label and what to keep

Since Royal Decree 444/2024, labeling ads and keeping proof of every campaign is no longer optional for creators and agencies working in Spain.

How to invoice a foreign brand as an influencer

When a brand outside Spain hires you for a collab, the same question always comes up: with or without VAT? Here's exactly how to invoice depending on the brand's country.

Do gifted products count as income for influencers?

Tax authorities no longer separate cash from free products: a brand gift is income and must be invoiced. Here's how to handle it correctly in 2026.