The doubt comes every month. You’ve just set up your storefront, the first commission has been added to your statement, and one question keeps lingering: does this need a CNPJ? Will it give me a headache with the Revenue? Do you have to open a company just for this?

This article answers without further ado — and shows the exact point at which it’s worth changing your structure.

What is a supplements commission and how is it classified

Direct answer: Supplement commission is the remuneration that a personal trainer, gym owner or fitness creator receives when a student or follower purchases products from a storefront or personalized link. Legally, it is income from an intermediary service — taxed as income from work (individual) or as a service provided (legal entity), depending on the structure you choose.

In practice, the government sees this as “provision of referral/curatorship services”. It’s not direct sales (you’re not a retailer), but it’s also not investment profit (it’s not a dividend). It is paid work — and, as such, there is a tax.

Why does the question about CNPJ appear early

Most fitness professionals start by earning small, irregular commissions and leave it to be resolved “later”. The problem is that, when recurrence grows, two silent costs appear: higher taxes as an individual and the lack of proof of income for major decisions (financing, commercial rent, visa, proof of income).

Resolving early — even if the solution is “stay an individual for now and open MEI when it reaches R$1,500/month” — saves money and headaches.

The three paths available in 2026

Path 1: Pure natural person

You receive the commission directly in the CPF, via PIX or TED from the partner platform. Does not issue a note. Declare the amount in the annual IRPF as “taxable income received from a legal entity”.

When it works:

  • Sporadic commission (e.g.: up to R$1,000 monthly, without consistency)
  • Model testing phase
  • You are already exempt from income tax and the commission does not take you out of the exemption range

Limitations:

  • Taxation according to the IRPF progressive table (can reach 27.5% above R$4,664.68/month in 2026)
  • No right to specific deductible expenses
  • Does not generate proof of economic activity

Path 2: MEI (Individual Microentrepreneur)

You open MEI, issue a service invoice for the platform, pay monthly DAS (~R$70 in 2026) and you are regularized.

When it works:

  • Recurring commission between R$1,500 and R$6,750 per month
  • You want to separate personal and professional assets
  • Do you want to issue NF for side businesses (consulting, online class)

Limitations:

  • Limit of R$81,000/year (2026) — above that, it is mandatory to migrate to ME
  • CNAE needs to support intermediation/consulting activities
  • Some regulated professions have restrictions (check with an accountant)

Path 3: ME or EPP in Simples Nacional

Formal company, Simples Nacional, rates starting at 6% on billing for services (Annex III/V).

When it works:

  • Consistent monthly commission above R$6,000
  • Operation with multiple sources of income (courses, mentoring, consultancy, commissions)
  • More sophisticated tax planning with an accountant

Limitations:

  • Fixed meter cost (R$200 to R$500/month)
  • More bureaucracy (accessory obligations, DEFIS, monthly DAS-D)
  • Need real separation between person and company

Table: which structure per commission range

Monthly commissionRecommended structureApproximate tax burdenObservation
Up to R$800Individual0%–7,5% (tabela IRPF)Validation phase
R$800 – R$1,500Individual with careful declaration7,5%–15%MEI is already starting to pay off
R$1,500 – R$6,700MEI~R$70/month fixedMEI optimal range
R$6,700 – R$20,000ME Simple (Annex III)6%–11%Already with counter
Above R$20,000ME/EPP with planning11%–19%Consider pro-labore

The percentages above are approximations for comparison; the actual value depends on the R factor, other income and your overall tax situation.

How the partner platform decides how to pay you

Serious platforms — such as Mega Suplementos — usually support both models: paying to CPF through adequate retention or paying to CNPJ through issuing NF. Some points that the contract defines:

  • If IRRF is withheld from payment (common in CPF)
  • If INSS and ISS are withheld at source
  • Which CNAE platform accepts in the note
  • How the change from CPF to CNPJ is handled in the middle of the partnership

Always read the contract before signing. Exchange objective questions with the support team — “I work today as a CPF, if I migrate to MEI in 3 months, do I need to register again or just change bank details?” — and you avoid surprises.

How to open MEI (step by step, 2026)

  1. Access the Entrepreneur Portal (gov.br/empresas-e-negocios)
  2. Enter with CPF and gov.br password (silver or gold level)
  3. Choose the main activity — something like “commercial representation” or “marketing consultancy”
  4. Add up to 14 side activities
  5. Enter address (can be residential)
  6. Confirm and receive the CCMEI (MEI Certificate)
  7. Issue the first DAS the following month (due on the 20th)
  8. Request municipal registration if your city hall requires NF-e
  9. Issue service note to the partner platform

The process takes, in practice, from 15 minutes (if gov.br is already validated) to 3 days (if you need to upgrade your account level).

Mistakes that are expensive

Receiving a high commission on the CPF for more than 6 months in a row — you pay more tax than necessary and lose the deductibility of expenses. MEI settles for R$70/month.

Open MEI at the wrong CNAE — some CNAEs prohibit issuing invoices for certain activities, forcing rectification later. Consult an accountant for 15 minutes before opening.

Mixing personal account and commission receipts — makes it difficult to control and prove the origin of amounts in the event of inspection. Open a separate account (or sub-account) even as an individual.

Do not declare in the IRPF thinking that “it is not enough” — the platform reports amounts above R$6,000/year per beneficiary. The IRS cross-checks data and notifies.

Wait for the Revenue to “warn” — it doesn’t warn. When fine mesh arrives, it is already delayed, with fines and interest.

How to Decide Now (1 Minute Rule)

  1. Project your monthly commission over the next 3 months.
  2. If it is up to R$1,500: stay as an individual, declare it in the IRPF, review it every quarter.
  3. If it is R$1,500 to R$6,700: open MEI this week.
  4. If it is above R$6,700 already projected: schedule with an accountant to open ME.

The most common wrong decision is to wait “a little longer” to open MEI when the commission is already above R$2,000. Each month of delay in this range costs between R$80 and R$300 in unnecessary taxes.

Key Takeaway Points

  • CNPJ is not mandatory to receive commission, but it becomes advantageous from R$1,500/month recurring
  • MEI covers the range of R$1,500 to R$6,700/month with a low fixed tax burden
  • Individuals pay more tax and do not generate proof of activity
  • The partner platform almost always accepts both models — ask before deciding
  • Not declaring your IRPF is never a safe option; the cost of regularizing later is always higher

Additional reading:

Ready to structure your referral income with the support of a platform that accepts CPF and CNPJ? Mega Suplementos was designed for fitness professionals at any stage of their career — join the waiting list and guarantee your showcase.