Non-Coded income - Huge amount Help please!

definitelyshellbell

So, after having a £500 tax rebate followed by a £500 bill from HMRC, I went online to check my account. I have been employed since October 2017 and it is my only source of income. Before then I was self-employed for 10 years. When I looked on my current tax year there was a non-coded income of over £11000 on there. I called them this morning to query this and she went back and saw that it had been on my account every year since at least 2014/15! I certainly haven't received this income but did receive a few unexpected tax bills which I just assumed were correct over the past few years. It's only this year because it was my first full year of PAYE that any more tax issues stood out.

Am I likely to have paid tax on this? And, would I be able to get a rebate? I had never seen this income on my account before I looked today and can't find it in any of my paper work but the tax office confirmed that it had been there for years. She wasn't able to tell me if I had paid tax on it but, it does now look like I may have.

Thanks for any help!

Dazed_and_C0nfused

Am I likely to have paid tax on this? 

No.

And, would I be able to get a rebate?

What evidence do you have you have paid more tax as a result of this and, if so, not already had it refunded or adjusted for?

She wasn't able to tell me if I had paid tax on it

Sad state of affairs 

Pennywise

Your self assessment return entries over-ride the PAYE coding so you won't have paid tax on it unless you also wrongly included it on your SA return.

jimmo

Its a bit of a mystery what this non coded income may have been but, as Pennywise has said, an SA Return is what really matters.

As you were self employed for 10 years before October 2017 if  you had no other employment or pension income before then any PAYE codes would have been irrelevant because they were not actually used.

From October 2017 your PAYE code will have been important if it was used by your employer and you could easily have overpaid tax.

For 2017/18 your Self Assessment needed to include your final self employment profit and your employment income and your SA Return would have produced the final result.

For 2018/19 you have not said whether you completed an SA Return or not. If you did all should be good but if you didn't and the PAYE code your employer used took account of the "non coded income" you will have overpaid tax.

Similarly for 2019/20.

Dazed_and_C0nfused

For 2018/19 you have not said whether you completed an SA Return or not. If you did all should be good but if you didn't and the PAYE code your employer used took account of the "non coded income" you will have overpaid tax.
Similarly for 2019/20.

Don't think that is correct.  By its very nature "non coded income" isn't included in a tax code.  It does however form part of the underlying tax code calculation which determines if the person is liable at higher rates, due full Personal Allowance etc.

So unless the non coded income has resulted in an adjustment being included in the tax code which was wrong (if there was no non coded income) then no extra tax would have been paid.

Op needs to provide details of their tax code make up for both years to have a better idea.