Filled in form for last tax year, separated from h so did seperate forms. On the section for other income I left blank as its never been over £300. H informed me some investment he got earnt over £3000 and it needs to be put in this section. I knew nothing of this,tax credits paid to me-does this mean I will have to pay them some money back? Scared,cause I don't have it:( any advice, thanks for reading