Notice period for employee

Try the Claeys & Engels notice calculator here;
www.dismissal.be

Attentia also has an excellent notice calculator:

https://opzeg.attentia.be/attentia/nl/#/opzegtermijn/wizard

I can already tell you that annual income doesn't matter if you only have a seniority of ten months. The rules were changed rather drastically on January 1st 2014, and as of then income is no longer taken into account. So if the entirety of your employment is situated post-2013, that won't be a factor.