Income from property included in the declaration is split in the
new way from the date of the declaration (which is the date the
declaration was signed by the last spouse or civil partner to sign)
provided the notice of declaration reaches the Inspector within 60
days of the date it was signed; see IN157 about late and lost
declarations.
For example, suppose the husband/one civil partner signs on
10 June 2006, and the wife/the other civil partner signs on 20 June
2006; the declaration applies to income that arises on and after 20
June 2006 provided the declaration reaches the Inspector within 60
days of 20 June 2006.
A declaration that is late is invalid (see IN156); it has no
effect at all. The couple must make a further declaration and send
it to the Inspector within the 60 day time limit if they want
income to be split on the basis of actual entitlement. Only income
that arises after the date of the declaration is covered.