I'm helping my husband with his tax return. We haven't logged into his government gateway account since this time last year and have been confused to see:
They have his address as an MOD office in Scotland (we live in the south of England);
They think he's Scottish as of April 2023. This is important (see below);
They have his correct employer in England (he's a teacher) but with a Scottish tax code (begins with S);
They also have an armed forces employment (he used to be an officer in the army cadets at his school but now is in the RAF and no longer gets paid so he hasn't had a P60 from them since 2015 and I'm not even sure it's the same employer). This also has a Scottish tax code. This employer's payroll seems to be based at the Scottish address they have down as my husband's home;
There is also a random non-coded income amount that we don't recognise but this seems the least of our problems.
What on earth is going on and what should we do? Trying to get hold of HMRC by phone is probably going to be awful. This is probably also going to mean an unexpected extra tax bill as tax rates are different in Scotland.
When we tried to fill in the return, it asks to confirm the address and Scottish/English status but warns that this may change the tax calculation. We don't want to do this without talking to someone first as there's clearly been a data error somewhere.
If anyone managed to get through that, we really need reassurance and some sensible advice, please. Tax and self assessments scare us.