IRS 2026 Tax Return: Everything You Need to Know
The IRS declaration is an annual obligation for all Portuguese taxpayers. This complete guide, prepared by our certified Official Chartered Accountants (TOC), explains step-by-step how to correctly fill in your IRS 2026 declaration, maximize deductions and avoid common errors.
📅 Important IRS 2026 Deadlines
Filing deadline: April 1 to June 30, 2026
- Start: Finance Portal opens April 1, 2026
- End: Last day for filing is June 30, 2026
- Refunds: Paid between July and September 2026
- Payments: Can be split into 3 installments
⚠️ ATTENTION
Filing outside the deadline incurs fines between €25 and €2,500, depending on income. Don't risk it - count on professional support.
💰 IRS 2026 Tax Deductions: Maximize Your Refund
1. General Family Expenses (35%)
Limit: €250 per taxpayer (€500 couple)
- Water, electricity, gas, telecommunications bills
- Supermarket and pharmacies
- Clothing and footwear
- Hairdressers and personal services
2. Health Expenses (15%)
Limit: €1,000
- Medical and dental consultations
- Prescription medicines
- Glasses and lenses
- Health insurance
3. Education Expenses (30%)
Limit: €800
- School tuition and fees
- School books
- School supplies
- Private tuitions (with invoice)
✅ Checklist: Required Documents
- ✓ Employer's income statement (Company Annex A)
- ✓ Rent receipts (if applicable)
- ✓ Bank interest statement
- ✓ Deductible expense invoices
- ✓ Donation receipts
- ✓ Alimony certificates
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