Corporate tax in Portugal in 2026: the IRC rate, surcharges, and relief for small business

What is IRC, and why the rate isn't the whole story

IRC (Imposto sobre o Rendimento das Pessoas Coletivas) is Portugal's corporate income tax, similar to our profit tax on organizations. It's charged on joint-stock companies, limited liability companies, and other commercial structures registered in Portugal or operating here through a permanent establishment. Resident companies pay IRC on all worldwide income, non-resident ones only on income earned within the country.

The main mistake an entrepreneur makes is looking at a single base-rate figure and assuming that's the tax. In practice the final burden is made up of three layers: the base IRC rate, the derrama municipal municipal surcharge, and the derrama estadual state surcharge on large profits. For a small company the real rate can be lower than the base thanks to SME relief, while for large business it can be noticeably higher because of the surcharges.

So a competent calculation always starts not with "what's Portugal's rate", but with "what will my specific company's effective rate be - factoring in profit size, the registration municipality, and available regimes". Before calculating taxes, it makes sense to understand the process itself ofregistering a company in Portugal- the taxation order also depends on the legal form.

The base IRC rate in 2026: 20% on the mainland

As of January 1, 2026, the base IRC corporate tax rate on mainland Portugal has been cut to 20%. This is part of a consistent policy of reducing the tax burden on business: not long ago the base rate was 21%, and the government stated its intent to gradually lower it to boost the country's competitiveness for investors and keep companies within the jurisdiction.

A few important clarifications on the base rate:

• 20% is the mainland rate.The autonomous regions - Madeira and the Azores - are entitled to set their own, generally lower, IRC rates; a separate discussion of this follows below.
• The rate applies to taxable profit,that is, to the financial result adjusted under the tax code's rules (CIRC), not to revenue. Expenses related to the activity are generally deductible.
• Non-resident companies with no permanent establishmentfor specific income types are taxed at special withholding rates, and the logic here differs.

The base rate cut to 20% signals that Portugal is positioning itself as a convenient European jurisdiction for holding companies and operating businesses, not just as a country to live in and get a residence permit. But the base rate is just the calculation's starting point.

A reduced 16% rate for small and medium business

For small and medium enterprises (SMEs), as well as small mid-cap companies, Portugal has a reduced IRC rate on the initial portion of profit. In 2026 this rate is 16% and applies to the first €50,000 of taxable profit. Everything above this threshold is taxed at the base 20% rate.

Let's break down the mechanics with a simple example. Say a small company earned €80,000 in taxable profit:

• The first €50,000 is taxed at 16% - that's €8,000 in tax.
• The remaining €30,000 is taxed at the base 20% rate - that's €6,000 in tax.
• Total base IRC - €14,000, excluding the municipal surcharge.

To use the relief, the company must meet the European SME definition by employee count and turnover/balance sheet. This measure specifically supports small business: for a startup or family company, savings on the first tens of thousands of profit are tangible. It's important to keep proper books from the very start - accounting and reporting questions are conveniently handled alongsideopening a company in Portugal, so SME status is correctly confirmed.

The derrama municipal municipal surcharge: up to 1.5%

The second layer of tax burden is derrama municipal, a municipal surcharge on IRC. This is a local tax that Portuguese municipalities are entitled to levy for their own benefit. Each municipality sets the surcharge's size independently within the limits set by law - up to 1.5% of taxable profit.

What's important to understand about derrama municipal:

• The rate depends on the place of registration.In some municipalities the surcharge is at its maximum - 1.5%, in others it's reduced or zeroed out entirely to attract business. So choosing a city for company registration is also, in part, a tax decision.
• The base is profit, not turnover.The surcharge is calculated on the reporting period's taxable profit.
• Relief for small business.A number of municipalities set a reduced rate or exemption for companies with small turnover - this needs to be checked for the specific municipality.

For a company choosing between registering in a major city and a municipality with a zero surcharge, the difference in derrama municipal over several years can turn out significant. These rates are published annually, so when planning they should be checked against the tax administration's current data.

The derrama estadual state surcharge on large profits

The third layer is derrama estadual, a state surcharge that only affects large business. It's a progressive tax on top of IRC that kicks in once taxable profit exceeds a certain threshold. Small and medium business generally isn't affected by this surcharge at all.

The approximate derrama estadual scale looks like this (exact thresholds and rates need checking against the current 2026 budget):

• Profit up to €1.5 million- the surcharge doesn't apply.
• From €1.5 to 7.5 million- a surcharge of roughly 3% on the excess amount.
• From €7.5 to 35 million- roughly 5%.
• Over €35 million- roughly up to 9%.

The progression principle is the same as the SME relief, only in reverse: the larger the profit, the higher the marginal rate on its upper portion. For a holding company or large operating business, this means the effective rate can noticeably exceed the base 20%. So large business plans its structure in advance - including using the dividend exemption and special regional regimes covered below.

What the final rate is made up of: the "tax - rate - base" table

Let's put all the components of Portugal's 2026 corporate tax into one table. This is exactly the construction to keep in mind when calculating a company's real burden. The derrama estadual figures are approximate and need checking against the current budget.

For a typical small company, the real rate is 16-20% plus the municipal surcharge. For large business, the progressive state surcharge is added on top. This is exactly why the effective rate needs to be calculated individually, not taken from headlines.

Dividend and capital gains exemption (participation exemption)

One of the main arguments in favor of a Portuguese holding company is the participation exemption regime. It allows dividends and capital gains from selling shares in subsidiaries to escape IRC if a number of conditions are met. For a holding structure, this is a key mechanism that makes Portugal competitive compared to other European jurisdictions.

Basic conditions for applying the exemption (approximate, need checking for the specific deal):

• A participation share of 10%+in the capital or voting rights of the subsidiary.
• A minimum holding period of 1 year(continuous).
• The subsidiary must not be located in a blacklisted jurisdictionand must be taxed at a level comparable to Portugal's.

If the conditions are met, dividends received and profit from selling shares are exempt from IRC - meaning there's no double taxation of profit already taxed at the subsidiary level. This turns a Portuguese company into a convenient asset holder within a group. We cover the logic of company and individual tax residency in more detail in our article onPortugal tax residency.

VAT, advance payments, and autonomous expense taxation

The corporate burden isn't limited to IRC. A company in Portugal faces several other mandatory elements important to include in the financial model:

• VAT (IVA).The standard rate on the mainland is 23%, with reduced rates for certain categories of goods and services. VAT is a separate layer of obligations with regular reporting; we cover the details in our guide toVAT (IVA) in Portugal.
• IRC advance payments.During the year, companies make advance tax payments (pagamentos por conta), which are then credited against the final liability.
• Autonomous taxation (tributacao autonoma).Certain expense categories - entertainment, some vehicle costs, unconfirmed expenditures - are subject to a separate tax at special rates, regardless of whether the company is profitable or not.

Autonomous taxation often becomes an unpleasant surprise for CIS entrepreneurs: it applies even at zero profit and penalizes "gray" or poorly documented expenses. So careful bookkeeping and confirming every expense line isn't bureaucracy, it's direct tax savings.

How to calculate the effective rate for your company

The effective rate is the real tax percentage a company pays on profit, factoring in all layers. It's calculated in several steps, and it's this calculation, not the base figure, that should underlie the decision to register a business in Portugal.

Calculation algorithm:

• Step 1.Determine taxable profit - the financial result adjusted under CIRC rules (deduct allowable expenses, add back non-deductible ones).
• Step 2.Apply the reduced 16% rate to the first €50,000 of profit (if the company is an SME), and the base 20% to the rest.
• Step 3.Add derrama municipal at your municipality's rate (0 to 1.5%).
• Step 4.If profit exceeds €1.5 million, add the progressive derrama estadual on the excess amount.
• Step 5.Factor in autonomous taxation of specific expenses as an additional line item.

For a small profitable company in a municipality with a zero surcharge, the effective rate can come out around 16-18%. For a large holding company in a big city, it can approach 28-29% because of all the surcharges. The spread is enormous, and this is exactly why planning the structure pays off. If you're considering relocating via entrepreneurial or remote activity, it's useful to link the company's taxes to your personal status right away - for example, viathe D8 digital nomad visa.

The owner's personal taxes and the link to IRC: an expert's view

A common mistake is calculating only corporate tax and forgetting that profit eventually needs to be paid out to the owner, which is personal taxation. Only the combination of "company tax plus distribution tax" gives the full picture.

Key points we always discuss with the client:

• Dividends to an individual.After IRC is paid, distributed profit is taxed at the recipient - generally at a flat capital income tax rate. That is, the combined "company plus owner" burden is higher than the IRC rate alone.
• Salary instead of dividends.Sometimes it's more advantageous to pay out part of the income as salary - it's deductible as a company expense, but taxed by progressive income tax (up to 48%) and contributions.
• The owner's tax residency.Whether you're a tax resident of Portugal or not radically changes the outcome. The NHR regime, closed to new applicants, and its successor incentive for professionals affect the personal side, not the corporate one.

So corporate tax can't be planned separately from personal tax. We cover the logic of individual relief in our article onthe NHR tax regime in Portugal- worth reading alongside this IRC guide.

What a CIS entrepreneur should factor in: compliance and source of funds

For entrepreneurs from Russia and other CIS countries, opening a company in Portugal is a fully legal path, but it goes hand in hand with enhanced compliance. Banks and the tax authority look closely at the origin of capital and ownership structure, and preparation for this needs to start early.

What to pay attention to:

• Source of funds.To open an account and deposit capital, the bank will request confirmation of the money's origin - a business sale, dividends, salary, inheritance. Documents are best prepared in advance and translated.
• Beneficial ownership (UBO).The ownership structure must be transparent; complex chains through multiple jurisdictions raise questions and drag out opening an account.
• Sanctions compliance.All operations are structured strictly within current legislation, with no attempts to circumvent restrictions - this is a matter of both legality and the company's reputation.

The main thing is not to see compliance as an obstacle. It's a working part of the process that, with proper preparation, goes smoothly. The cleaner and clearer the structure and the origin of funds, the faster and easier the business launches.

Madeira and the Azores: the MIBC regime at around 5%

Portugal's autonomous regions - the archipelagos of Madeira and the Azores - have the right to set their own IRC rates, generally lower than the mainland's. But the real point of interest for international business is the Madeira International Business Centre (MIBC) regime, also known as the Free Zone of Madeira.

What the MIBC regime offers:

• A reduced IRC rate of around 5%on profit from international activity - one of the lowest corporate tax rates in the EU while retaining full European company status.
• It's not an offshore scheme, but an EU-approved state support regime.The relief operates within EU state aid rules and has a validity period, renewed by agreement with Brussels.
• Substance conditions.To use the rate, the company must create real jobs on Madeira and/or make minimum investments - a pure "paper" structure isn't enough.

The Madeira regime suits holding companies, and trading, shipping, and service companies with international activity. But it requires real presence and careful compliance with conditions, or the relief is withdrawn. It's a tool for those ready to conduct genuine activity on the island, not just register a nameplate.

Bottom line: who Portugal is advantageous for as a business jurisdiction

Corporate tax in Portugal in 2026 is a balanced system, not just "20%". For small and medium business, the country has become noticeably more attractive: the base rate is cut to 20%, and the first €50,000 of profit is taxed at just 16%. For holding companies, the dividend exemption works, and for international activity, the Madeira regime at around 5%. Large business pays more due to the progressive surcharges, but even for it there are legal optimization tools.

Who Portugal is especially interesting for:

• Small business and startups- thanks to the reduced 16% rate and the overall IRC cut.
• Holding companies- thanks to the participation exemption and full EU company status.
• International service and trading companies- thanks to the Madeira regime with real presence.
• Entrepreneurs who are relocating to Portugal themselves- the ability to link corporate and personal taxes into a single structure.

One thing matters: the effective rate is calculated individually and depends on the profit amount, the municipality, and the chosen regime. Current rates and forms should always be checked on the official portalPortugal's government services (gov.pt), and the structure should be calculated for the specific business.