Sure, here’s a guide along with an example of an income declaration of self-employment for a once-a-week cook:

Income Declaration of Self Employment

Name: [Your Full Name]
Address: [Your Address]
City, State, ZIP: [City, State, ZIP Code]
Phone: [Your Phone Number]
Email: [Your Email Address]

[Date]

To Whom It May Concern,

I, [Your Full Name], residing at [Your Address], do hereby declare that I am self-employed as a cook. I work once a week, providing cooking services for [Client’s Name or Description of Clients] at their location.

The details of my income are as follows:

Income Details:

Service Provided: Cook
Frequency of Service: Once a week
Rate per Service: $[Rate]
Total Monthly Income: $[Total Monthly Income]
I affirm that the above information is true and accurate to the best of my knowledge. Should you require any additional information or documentation, please feel free to contact me.

Thank you for your attention to this matter.

Sincerely,

[Your Signature]
[Your Full Name]
[Your Title, if applicable]
[Your Business Name, if applicable]

This template should help you get started. Make sure to fill in all the placeholders with your specific details. If you need further assistance, please let me know!