Taxes

2026 tax return: everything you need to know

Publié le 20 avril 2026 - Public Service / Directorate of Legal and Administrative Information (Prime Minister)

This file includes all the questions you have: 2026 news, reminder of filing dates, declaration of expenses related to children, deduction of professional expenses and alimony, withholding tax, declaration of social assistance, etc.

Illustration

2026 tax return rates and scales

All figures for the 2026 edition of the tax return.

Income tax: brackets and tax rates 2026

Taxes 2026: New Child Support Deduction Limits

Professional fees: 2026 mileage scales are available

The fuel fee schedule for the 2026 tax return is available

New products 2026

This has changed compared to previous years.

Donations to associations and tax cuts: new rules in 2026

Taxes: the procedure for accessing your personal space is evolving

Withholding tax: the default distribution changes for married or past couples

Exemption from property tax: are you concerned?

New tax cuts for some landlords

Transport costs and tips: extension of the exemption measures

The differential contribution on high incomes is maintained

Completing your tax return: instructions for use

The essential information to properly complete your declaration.

2025 income tax return: what is the deadline in your department?

Taxes 2026: what are the deadlines for reporting your professional income?

Income tax 2026: get an estimate of how much you will pay

How can you get help if you have trouble filing your tax return?

Lone parent: Don't forget to check box T on the tax return

Do I have to declare the income of my adult child?

Property declaration: in which cases do you need to provide information in 2026?

Income tax - Salary and other taxable income from paid employment

Income tax - Should social assistance and employer assistance be reported?

Additional topics

Agenda

See all due dates

Une remarque ?