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Invopop supports NF-e, NFS-e and NFC-e documents. Transport documents (MDF-e and CF-e) are not currently supported.
It is not necessary, any fields pertaining to the previous municipal tax implementation will be ignored and the invoice will already have all the data to be compliant. However, it is always recommended to remove ignored fields to avoid confusion and keep your documents clean.
Yes, all transaction are mandatory in Brazil.
At the moment, only NFC-e and NFS-e are supported. We are working on adding support for other types.
For further details on how GOBL prepares data for conversion, see:
ISS (Imposto Sobre Serviços) is not treated as a standard transactional tax calculated on top of a net amount. Instead, it is an informative tax embedded in the final price—the invoice only reports what portion of the total corresponds to ISS.In GOBL, ISS is flagged as an “informative” tax category. This means:
  • ISS must be added to the GOBL invoice like any other tax, with the proper percentage.
  • The tax amount is not added to the price; it represents the portion of the total that corresponds to ISS.
  • The NFS-e document displays ISS as informational data, reflecting what was already embedded in the final price.
  • Do not use prices_include with ISS—since ISS is informative, it should not be treated as a price-inclusive tax.
Billing platforms like Chargebee and Stripe are not aware of ISS particularities and tend to wrongly treat ISS as a typical tax included in the price. This causes invalid-prices-include errors during import because that pricing model is not compatible with how ISS works for NFS-e.The correct setup is:
  1. Do not configure ISS as a tax in your billing platform (Chargebee, Stripe, etc.).
  2. Prices in your billing platform should already be the final public prices with ISS embedded.
  3. Add a Modify Silo Entry step to your import workflow that injects the ISS tax with the desired percentage into the GOBL invoice.
This workflow approach ensures ISS is properly added to the GOBL invoice as an informative tax category before submission to the Brazilian tax authority, while avoiding the pricing conflicts that occur when billing platforms try to handle ISS as a standard tax.

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