Portugal’s Tax Calendar: What to Know and When to Act
Staying on top of Portugal’s tax calendar isn’t just smart—it’s essential. Whether you’re a local, a business owner, or newly arrived in Portugal, knowing the key deadlines helps avoid penalties and keeps everything running smoothly. This guide breaks it down month-by-month, so you can stay compliant, plan ahead, and breathe easier.
A Quick Look at Portugal’s Tax Landscape
Portugal’s tax system covers both individuals and companies, and includes a mix of direct and indirect taxes. Here’s a snapshot of what to expect:
- IRS (Income Tax): For individuals—covers salaries, rental income, and other earnings.
- IRC (Corporate Tax): Paid by businesses on profits and advance payments.
- IMI (Municipal Property Tax): Paid annually by property owners.
- VAT (IVA): Charged on goods and services, with monthly or quarterly deadlines.
- Stamp Duty: For contracts, loans, leases, and other transactions.
Each tax type has its own deadlines—so timing is everything.
Monthly Breakdown of Tax Deadlines
January
- 31st: Declare rental income from the previous year.
February
- 15th: Update household details on the tax portal.
- 25th: Verify and validate invoices on e-Fatura.
March
- 31st: Deadline for new residents to apply for NHR (Non-Habitual Residency).
April to June
- 1st April – 30th June: IRS filing season.
May
- 31st: First IMI installment due (if applicable).
June
- 30th: Final day to file IRS.
July
- 31st: Expect IRS refunds (if filed on time).
August
- 31st: Second IMI installment for properties over €500.
September
- 30th: AIMI (Additional Property Tax) due.
November
- 30th: Final IMI installment for larger property taxes.
Recurring Deadlines to Keep in Mind
- VAT (IVA): Filed monthly or quarterly, depending on your business setup.
- Vehicle Tax: Due annually, in the month of registration.
- Stamp Duty: Payable within 10 days of the taxable action.
A Closer Look at Key Tax Types
IRS (Personal Income Tax)
Submitted between April 1 and June 30, this is where you declare all income and confirm your deductions—think health, education, and rent. Don’t forget to keep your e-Fatura updated.
IRC (Corporate Tax)
Businesses have to make advance payments (July 31, September 30, and December 15) and settle their accounts by May 31 of the following year. Good bookkeeping is key here.
IMI (Property Tax)
Payment structure depends on how much you owe:
- Up to €100: one payment in May.
- €100–500: two installments (May and November).
- Over €500: three installments (May, August, November).
VAT & Stamp Duty
- VAT is due by the 25th of the following month (monthly filers) or following the quarter (quarterly filers).
- Stamp Duty is due within 10 days of the relevant transaction.
Staying Compliant: Tips for Individuals and Businesses
- Individuals: Stay on top of IRS deadlines and e-Fatura categories.
- Businesses: Ensure all invoices, VAT returns, and IRC payments are filed correctly.
- Expats & NHRs: Submit your NHR application in your first year—this status brings real tax benefits.
Payments, Refunds, and What Happens if You Miss a Deadline
Making Payments
Use the Finance Portal or a participating bank. Always double-check the reference number and pay on time to avoid trouble.
Getting Refunds
Expect your IRS refund by July 31st if everything was submitted on time.
Late? Here’s What That Means
- Fines: €200 to €2,500, depending on the case.
- Interest: Added on unpaid amounts.
- Loss of Benefits: Deductions or exemptions could be lost.
Plan Ahead: Your Future Self Will Thank You
Good tax planning means fewer surprises.
- Keep a digital or physical file of expenses and receipts.
- Set calendar reminders for key dates.
- Work with a tax consultant if things start to feel overwhelming.
Keeping up with taxes in Portugal doesn’t need to be complicated. A bit of planning and the right support can go a long way. Need a hand with it all? OnCorporate’s team is just a message away—and always ready to help.
