Financial year Jan 1 - Dec 31: tax declarations versus cotisations declarations?

Venetia

17 May 2010 at 20:30 · Viewed 1468 times

I understand from reading an earlier post that the financial year is 1 Jan - 31 Dec and that the social cotisations although due 31 Jan 2009, 30 Apr 2010 were for income received between Oct - Dec 2009 and Jan - Mar 2010 respectively.

I made a payment for cotisations at the end of January based on income received in Oct 09, Dec 09 and Jan 10. For the tax form however, should I report on this same income or only declare the 2009 income (i.e. Oct and Dec), even though for the social cotisations I have mistakenly reported Jan 2010 income as part of the 4eme trimestre for 2009?

Answered