The changes in accounting in 2026, especially in Portugal, are closely linked to the tax changes in the 2026 State Budget and the increasing digitalization of processes. One of the most relevant changes is the reduction of the Corporate Income Tax (IRC) rate, which drops to 19%, with additional benefits for SMEs, which can pay around 15% on their first profits. This measure aims to increase the competitiveness of companies and encourage investment and economic growth.
Another important change is the strengthening of reporting obligations and tax control, especially regarding VAT. There is greater integration between electronic invoicing, SAF-T files, and accounting, allowing the Tax Authority to automatically cross-reference data. This requires companies to have more rigorous processes and less room for error, increasing the importance of accounting organization and internal control.
There are also changes at the level of Personal Income Tax (IRS) and tax regimes. In 2026, there are updates to the tax brackets and some changes to deductions, in addition to specific rules for those who opt for the simplified regime or organized accounting. For example, self-employed workers can join the simplified tax regime if they do not exceed certain income limits, which directly influences how accounting is done.
Finally, there is a clear trend towards greater transparency and digitalization. Companies have to present more detailed and structured information, and there is a growing use of accounting software and process automation. This causes the role of the accountant to evolve, moving from a more operational function to a strategic one, assisting in decision-making and tax planning for companies.