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descodify

Terms of Service

Last updated: May 28, 2026

Who provides this service

Descodify is provided by DESCODIFY, UNIPESSOAL LDA (NIPC 519352548), registered at the Conservatória do Registo Comercial de Aveiro under matrícula 519352548.

These terms govern your use of Descodify, a certified invoicing and tax reporting tool for solo entrepreneurs in Portugal. By creating an account, you agree to these terms.

We keep these terms in plain language. If anything is unclear, email us at [email protected].

What Descodify is

Descodify helps solo entrepreneurs in Portugal issue certified invoices, track expenses, calculate VAT, and report Social Security contributions. It is a tool that assists you with your tax and invoicing obligations - it does not replace professional accounting or legal advice.

Your account

  • You must provide accurate information when creating your account
  • You are responsible for keeping your login credentials secure
  • One person per account - do not share your login with others. If you work with an accountant, invite them to your organization through Descodify instead

Your data and content

You own your data. Invoices, customer records, expenses, documents, and any other content you create in Descodify belong to you. We do not claim ownership of your content.

You grant us a limited license to store, process, and display your data as needed to provide the service - for example, to generate invoices, calculate VAT, or sync with the Portuguese tax authority portal when you request it.

You can export your data at any time. If you delete your account, we will remove your personal data, except where we are legally required to retain records (see our Privacy Policy for details on retention).

Certified invoicing

Descodify is a certified invoicing tool. This means the software complies with Portuguese tax authority (AT) requirements for invoice generation and numbering. A few things to understand:

  • Invoices are permanent. Once an invoice is issued, it cannot be edited or deleted. This is a legal requirement, not a limitation of the software. To correct an invoice, you issue a credit note.
  • Sequential numbering. Invoice numbers are assigned automatically and cannot be changed. Gaps in numbering may need to be explained to the tax authority.
  • You are responsible for accuracy. Descodify automates VAT calculations and applies rules based on your business profile and client details, but you are responsible for reviewing invoices before issuing them. The tax authority holds the NIF owner accountable, not the software provider.

Tax authority integration

If you choose to connect your Portal das Finanças account, Descodify uses a dedicated subuser on the AT portal - a separate login created specifically for Descodify. This means:

  • Descodify never uses your main Portal das Finanças credentials to access the portal
  • The subuser has its own audit trail on the AT portal, so you can see exactly which actions were performed by Descodify versus your own login or your accountant's
  • You can revoke the subuser at any time through the AT portal, instantly cutting off Descodify's access

There are two ways to set this up:

  • Automatic setup:You provide your main Portal das Finanças credentials once. Descodify creates the dedicated subuser for you, then immediately and permanently deletes your main credentials. We never store your main login.
  • Manual setup: You create the subuser yourself on the AT portal and enter only the subuser credentials in Descodify. Your main credentials never touch our system.

Whichever method you choose, all stored credentials are encrypted at rest and never stored in plain text. You can disconnect your portal at any time in Settings, which immediately deletes the stored subuser credentials.

AI assistant

Descodify includes an optional AI assistant that can answer questions about Portuguese tax, invoicing, and Social Security. Important limitations:

  • Not professional advice. The AI assistant provides general information based on Portuguese tax rules. It is not a substitute for advice from a qualified accountant or tax professional. Always verify important decisions with a professional.
  • May be inaccurate. AI responses can contain errors. Do not rely on the assistant as your sole source of information for tax filings or compliance decisions.
  • Optional. You can disable the AI assistant entirely in your organization settings. Descodify works fully without it.

Acceptable use

You agree not to:

  • Use Descodify for fraudulent invoicing or tax evasion
  • Attempt to circumvent invoice sequencing, certification controls, or other compliance mechanisms
  • Access other users' data or organizations without authorization
  • Use automated scripts to access the service in a way that degrades it for other users
  • Reverse-engineer, decompile, or attempt to extract the source code of the tool

We may suspend or terminate accounts that violate these terms.

Service availability

We aim to keep Descodify available and reliable, but we do not guarantee uninterrupted access. The service may be temporarily unavailable for maintenance, updates, or reasons beyond our control.

We will make reasonable efforts to notify you in advance of planned downtime. We are not liable for losses arising from service interruptions.

Pricing and payment

Descodify offers a free Starter plan and paid plans (Completo at €19/month, IRS Filing at €49 one-off). See our pricing page for current details. You will never be charged without explicitly opting in to a paid plan.

Limitation of liability

Descodify is provided “as is” without warranty of any kind, whether express or implied.

  • We are not liable for errors in tax calculations, VAT determinations, or any other automated outputs. You are responsible for reviewing and verifying all invoices and declarations before submission.
  • We are not liable for any penalties, fines, or tax adjustments imposed by the Portuguese tax authority or any other government body as a result of using Descodify.
  • Our total liability to you for any claim arising from your use of Descodify is limited to the amount you paid us in the 12 months preceding the claim, or €100, whichever is greater.

Intellectual property

Descodify, its design, code, and branding are owned by us. These terms do not grant you any rights to our intellectual property beyond the right to use the service as intended.

Your data remains yours. We do not use your invoices, customer data, or financial records for any purpose other than providing the service.

Account termination

You can delete your account at any time. When you do:

  • Your personal data will be deleted, subject to legal retention requirements
  • Invoice records must be retained for a minimum of 10 years under Portuguese law - these will be retained in anonymized form after account deletion
  • We recommend exporting your data before deleting your account

We may terminate your account if you violate these terms, with notice where possible.

Changes to these terms

We may update these terms from time to time. When we make significant changes, we will notify you by email or through a notice in the app at least 30 days before the changes take effect. Continued use of Descodify after the changes take effect constitutes acceptance of the updated terms.

Governing law

These terms are governed by the laws of Portugal. Any disputes will be resolved in the courts of Portugal, without prejudice to any mandatory consumer protection rights under EU law that may apply in your country of residence.

Consumer rights (non-professional users)

If you are using Descodify outside your trade or profession (for example, exploring free tools before registering an activity), you are a “consumidor” under Portuguese consumer-protection law (Lei 24/96). In that case, the following channels are available to you in addition to your rights under these terms:

  • Complaints — email [email protected]. You can also submit a complaint through the Portuguese electronic complaint book at www.livroreclamacoes.pt.
  • Alternative dispute resolution (ADR)— under DL 144/2015 and the EU ADR Directive 2013/11/EU, you can refer a consumer dispute to CNIACC(Centro Nacional de Informação e Arbitragem de Conflitos de Consumo) at www.cniacc.pt.

Users acting in the course of a trade or profession (registered freelancers, companies) are not consumers under Lei 24/96 and the consumer-protection channels above do not apply, but you can still raise any issue with us by email at [email protected].

Contact

For questions about these terms, email us at [email protected].