Costs, Fees & TaxesAugust 29, 2026 2 min read

How to calculate the tax percentage you need to enter

The exact method to get your real percentage from your latest revenue, whether you're a Responsable Inscripto or on monotributo, and where to find what was withheld from you.

Escalafy doesn't pull taxes automatically: you enter the percentage yourself, because it varies from store to store. This is the method we recommend to get it right.

If you're a Responsable Inscripto (VAT-registered)

Take what you paid in VAT + gross receipts tax (Ingresos Brutos) for your latest billing period and divide it by your total revenue for that same period. It usually comes out between 10% and 15%.

Also, enter your product costs including VAT.

If you're on monotributo (simplified regime)

Same procedure, but counting only gross receipts tax, without VAT. It usually comes out between 3% and 5%.

Where to see exactly what was withheld from you

In Mercado Pago:

  1. In the left sidebar, go to Facturación (Billing).
  2. Inside Facturación, on the right, go to Impuestos (Taxes; it may also appear as Percepciones or Retenciones).
  3. By default it shows the last 6 months: change the filter to last month, one that's already closed.
  4. There you'll see what was withheld for gross receipts tax (Ingresos Brutos) and SIRTAC.
  5. Divide that total by that month's revenue.

Where to enter it

In Fees → Store taxes (or Mercado Libre taxes, depending on the platform). Check that the dropdown shows the right platform: sometimes it shows Mercado Libre when you're looking for the store one.

Practical tips: you can average 2 or 3 months, because the percentage is usually very consistent. If you don't know it yet, enter 5% as a pessimistic estimate and correct it later. And if you prefer, leave it at 0 to finish setup and adjust it later on.

It's applied order by order

The percentage is deducted on every order, not once a month. Since it's an average, a single order may come out slightly above or below depending on the province, but over a full period the result is very accurate.

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