Are you sure about that mate? When my missus got to the Isle of Man, I was told that she had to be resident in the island when the tax year starts for us to be allowed to be taxed together immediately. As she arrived in the May, we were told we'd have to wait until the tax return was completed the following year, and then we'd get a rebate if necessary.
As it was, Yam got a job a month later so the marriage allowance is basically pointless as there is no benefit being taxed together unless one of you is out of work!
