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Fiscal Calendar Portugal 2025

By Rauva

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Published on 19 February 2025

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4mins read

If you’re starting a business or already running one, knowing tax deadlines is essential. Missing tax payment and filing deadlines can result in fines and interest charges that directly affect your business’s financial health.

In Portugal, setting up a company is straightforward, but many entrepreneurs are unaware of the tax responsibilities involved. Did you know that, according to the Tax Authority, about 30% of businesses miss tax deadlines due to lack of planning or simple oversight? That’s exactly what we want to help you avoid.

To help you stay on top of everything, we’ve prepared this Fiscal Calendar with key deadlines and obligations throughout the year. Proper tax management not only prevents fines but also ensures greater financial stability and allows you to focus on growing your business.

Who should use a Fiscal Calendar?

This fiscal calendar is designed for:

Small and medium-sized businesses (SMEs)
Freelancers and self-employed professionals
Startups and new businesses
Companies that want to avoid missing tax obligations

If you fit into any of these categories, this guide will help you keep everything under control.

How to make the most of this Fiscal Calendar?

To ensure you meet deadlines without complications:

Set automatic reminders for key dates, such as VAT payments and withholding tax submissions.
Use accounting software to calculate and submit tax declarations automatically.
Define internal processes so that everyone in your company knows the tax obligations and avoids delays.

With this calendar, you can plan your payments better, avoid fines, and ensure your business remains compliant with the Tax Authority (AT).

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What are the main Taxes and Declarations in Portugal?

1) VAT (Value-Added Tax)

VAT is applied to the sale of goods and services. If you’re under the standard VAT regime, you must submit periodic declarations:

Monthly, if your turnover exceeds €650,000.
Quarterly, if your turnover is below €650,000.

2) Corporate Income Tax (IRC)

This tax applies to companies and is levied on taxable profit. The main obligation is the Modelo 22 tax return, submitted annually, usually by May 31, along with potential advance payments throughout the year.

3) Personal Income Tax (IRS)

If your company pays income to employees or service providers, it must withhold and submit the tax monthly to the Tax Authority (AT). This withholding tax is the company’s responsibility and applies to payments made to employees and service providers.

Freelancers, on the other hand, are responsible for declaring their income annually and paying the corresponding personal income tax (IRS). Unlike companies, freelancers handle their own tax filings directly with the authorities.

4) Stamp Duty (IS)

This tax applies to various transactions, contracts, and operations that are not subject to VAT, such as rental agreements and financial transactions.

5) Monthly Payroll Declaration (DMR)

The DMR is a mandatory declaration that all businesses must submit to the Tax Authority (AT) and Social Security. It reports salaries and payments made in the previous month, including:
✔ Employee and manager salaries.
✔ Fees paid to service providers with tax withholding.
✔ Social Security contributions and applicable IRS withholdings.

Important Note: In Portugal, all invoices must be issued using certified software approved by the Tax Authority (AT).

6) Stamp Duty Declaration (DMIS)

The DMIS is a mandatory declaration used to report and settle Stamp Duty. It applies to transactions, contracts, and financial operations that are not subject to VAT.

2025 Tax Obligations - Monthly Deadlines

Each month, businesses and freelancers in Portugal have specific tax obligations they must comply with. Below is a breakdown of the key deadlines throughout the year.

📌 January

Until the 5th → Submission of the SAF-T file (electronic invoice reporting to the Tax Authority).
Until the 10th → DMR (Monthly Payroll Declaration): Reporting of salaries and tax withholdings.
Until the 20th → Payment of IRS and IRC withholding tax and Social Security contributions.
Until the 25th → VAT payment (monthly or quarterly, depending on the tax regime).

📌 February

Until the 20th → Payment of IRS and IRC withholding tax and Social Security contributions.
Until the 25th → VAT payment.
Until the 28th → Submission of Modelo 10, 39, 42, and 29:
Modelo 10: Annual declaration of payments made to employees and freelancers in the previous year.
Modelo 39: Declaration of income subject to final withholding tax.
Modelo 42: Declaration of subsidies and grants received.
Modelo 29: Declaration of interest and royalties paid to non-residents.

📌 March

Until the 10th → DMR (Monthly Payroll Declaration).
Until the 20th → Payment of IRS and IRC withholding tax and Social Security contributions.
Until the 25th → VAT payment.

📌 April

Until the 10th → DMR (Monthly Payroll Declaration).
Until the 15th → Submission of quarterly VAT return (1st quarter).
Until the 20th → Payment of IRS and IRC withholding tax and Social Security contributions.
Until the 25th → VAT payment.
Start of IRS submission period → Annual personal income tax declaration for freelancers and sole proprietors.

📌 May

Until the 10th → DMR (Monthly Payroll Declaration).
Until the 20th → Submission of Modelo 22 (Corporate Tax Return), reporting the taxable profit of companies.
Until the 20th → Payment of IRS and IRC withholding tax and Social Security contributions.
Until the 25th → VAT payment.

📌 June

Until the 10th → DMR (Monthly Payroll Declaration).
Until the 20th → Submission of DMIS (Stamp Duty Declaration), if applicable.
Until the 20th → Payment of IRS and IRC withholding tax and Social Security contributions.
Until the 25th → VAT payment.

📌 July

Until the 10th → DMR (Monthly Payroll Declaration).
Until the 15th → Submission of IES (Simplified Corporate Information), including financial statements and profit distribution.
Until the 20th → Payment of IRS and IRC withholding tax and Social Security contributions.
Until the 25th → VAT payment.

📌 August (Fiscal Holiday Period)

Although this is a period of reduced tax obligations, some deadlines still apply:

Until the 10th → DMR (Monthly Payroll Declaration).
Until the 20th → Payment of IRS and IRC withholding tax and Social Security contributions.
Until the 25th → VAT payment.

📌 September

Until the 10th → DMR (Monthly Payroll Declaration).
Until the 15th → Submission of quarterly VAT return (2nd quarter).
Until the 20th → Payment of IRS and IRC withholding tax and Social Security contributions.
Until the 25th → VAT payment.

📌 October

Until the 10th → DMR (Monthly Payroll Declaration).
Until the 20th → Payment of IRS and IRC withholding tax and Social Security contributions.
Until the 25th → VAT payment.

📌 November

Until the 10th → DMR (Monthly Payroll Declaration).
Until the 15th → Submission of quarterly VAT return (3rd quarter).
Until the 20th → Payment of IRS and IRC withholding tax and Social Security contributions.
Until the 25th → VAT payment.

📌 December

Until the 10th → DMR (Monthly Payroll Declaration).
Until the 20th → Payment of IRS and IRC withholding tax and Social Security contributions.

Until the 25th → VAT payment.

How does Rauva help you stay on top of your 2025 Tax Calendar?

Managing your tax obligations doesn’t have to be complicated. With proper planning, knowledge of deadlines, and the right tools, you can keep your business on track and avoid unpleasant surprises.

At Rauva, we believe organized financial management is essential for business success. That’s why we not only help you understand the deadlines but also provide you with all the tools you need to meet them effortlessly: from issuing certified invoices to integration with the Tax Authority.

With Rauva, you simplify accounting and focus on what truly matters: growing your business. Want to learn more?