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This section contains information concerning American taxation which may be of interest to some of our clients. Should you have any suggestions or have been unable to find the information you were looking for, please contact us.



A number of the most commonly used forms and a short description of each of them can be found here.

There is also a list of the most commonly used terms and an explanation. The explanation is purely intended to give you an impression and should not be seen as covering all eventualities. No terms and conditions apply. Please contact us if the term you need is not listed. We will answer your query as quickly as possible.

If you need to know more about the terms in this list as they may apply to your situation, please contact us. No initial charges will be made for this service.

The list also contains a number of links that may be of interest to you. We provide no guarantee that the links, the websites or the forms are complete and correct, given that we have no influence over their production.


Tax Preparation Agreement and Information Form (Individual)

Tax Preparation Agreement and Information Form (Corporation)

Change of Address

Change of Address or Responsible Party — Business

Power of Attorney and Declaration of Representative

Application for IRS Individual Taxpayer Identification Number (W7)

Application for Employer Identification Number (SS-4)


I've been using Corvus for my American tax returns for years. I have always been completely satisfied with their services. I particularly value their personal approach, and the fact that they're always willing to go the extra mile.

H. Bruggink The Netherlands