Tax consulting services in Onex

The office will be closed from:

  • July 25 to August 10, 2025
  • August 15 to August 24, 2025

General presentation

Do you need help filling out your tax return?

Trust IDEALTAX.

With 20 years of experience, we are committed to making taxation accessible to all, with competitive rates and quality service.

We keep ourselves constantly informed of the latest tax news and ensure that all deductions to which you are entitled are taken into account to optimize your situation.

We also ensure that all your documents are submitted on time to the relevant tax authorities and, if necessary, we request an extension.

IDEALTAX also handles tax withholding corrections, procedures for Geneva quasi-residents, and other administrative formalities.

Entrust your tax return to trusted experts!

Aid that complies with tax regulations

IDEALTAX offers a full range of services to support you with your tax procedures, including:


  • Preparation of your Geneva tax return and your quasi-resident tax return.
  • Estimating the amount of tax payable in order to anticipate your tax obligations.
  • Checking the tax slip to identify and correct any errors.
  • Adjusting provisional payments to adapt your payments to your situation.
  • Request for an extension of the deadline for submitting your declaration.
  • Drafting letters and administrative documents to simplify your procedures.
  • Spontaneous reporting of undeclared elements to regularize your situation in complete transparency.
  • Mail forwarding


Thanks to our expertise, we optimize your taxation while respecting current regulations.

Learn more

Why choose IDEALTAX?

Personalized support

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Competitive prices

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Legal compliance

Service in French, English and Spanish

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Services for cross-border workers

Contact us to learn more and discover our services!

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