Earnings Query invoice date and bank transation date

My Invoices are dated between Sep 2013 to April 2014. I have taken monthly salary each of these months and one single dividend of 25K in the month of April. From May onwards I intend to join a perm role.

I want to consider my 12 months period from Jan 2014 to Dec 2014, which will involve
1) Jan 2014- April 2014 salary from ltd company
2) 25K dividend taken in April 2014 from ltd company
3) salary from perm role between May to Dec 2014

My question is can I consider whole of 25K dividend taken as earnings during the period Jan 2014 to Dec 2014 ? I am not sure I can do this as some invoices are dated between Sept 2013 to Dec2013.

Note that if I exclude the invoices from Sept to Dec 2013 and consider only invoices from Jan 2014 to April 2014, the sum total earnings are less than 25K

Any accountant in this group or senior members please clarify!!! Thank you.

Any solution Mate.
I am on the same boat.