# Portugal tax filing deadlines 2026

> Live situation record from CLSTR: https://clstr.news/situations/portugal-tax-filing-deadlines-2026
> Updated: 2026-07-31T05:45:26.000Z. Sources: 3. Developments: 2.

At the start of July, the Portuguese tax authority announced the filing deadlines that companies must meet for the 2026 tax year. A later notice clarified that the Authority must issue final IRS liquidation notes for the 2025 tax year by 31 July, indicating whether taxpayers owe additional tax, are due a refund, or have a balanced account. Refunds are payable by 31 August, with many received earlier via bank transfer when an IBAN was supplied. Taxpayers can check the status of their notes through the Portal das Finanças, and submissions after 31 July may incur higher penalties. The reduced withholding rates in 2025 mean some refunds are smaller than in previous years.

## Timeline

### 2026-07-31: Portugal tax authority deadline for IRS liquidation notes ends Friday

Portugal’s tax authority must issue 2025 IRS liquidation notes by 31 July, detailing refunds or payments; refunds are due by 31 August and can be checked online.

3 sources. https://clstr.news/cluster/portugal-tax-authority-deadline-for-irs-liquidation-notes-ends-friday

### 2026-07-01: Portugal July tax filing deadlines for companies

July brings a series of Portuguese corporate tax deadlines including IES, SAF‑T, Intrastat, and a new Social Security payment model, with final filings due 31 July.

3 sources. https://clstr.news/cluster/portugal-july-tax-filing-deadlines-for-companies

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Cite as: Portugal tax filing deadlines 2026. CLSTR, https://clstr.news/situations/portugal-tax-filing-deadlines-2026