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Complete Accounting Guide for SMEs in Portugal 2026

January 23, 2026•Hive Group

Discover everything about tax obligations, deadlines and accounting optimisation for small and medium businesses in Portugal.

Introduction

Accounting management is fundamental for the success of any SME in Portugal. In this guide, we explain the main tax obligations and how to optimise your accounting.

Tax Obligations in 2026

SMEs in Portugal have several monthly, quarterly and annual tax obligations. VAT must be submitted monthly by the 10th of the following month. Corporate tax is calculated annually.

Benefits of Certified Accountants

Working with certified chartered accountants ensures legal compliance and tax optimisation within the law.

Perguntas Frequentes

When to submit VAT?

By the 10th of the month following the taxation period.

Do I need a certified accountant?

Yes, companies in Portugal are required to have organised accounting by certified accountants.

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