Self assessment - I owe nearly twice what I earn't.

dori2o

The Student loan repayments are what brings the calculation to £1100.

So the fact you didn't pay tax at job 2 is compounded by the fact there was insufficient student loan deductions over the yer. Did employer 2 deduct student loan payments?

There would have been some student loans payable due to the self employed income, but only 9% of £660 (approx £60)

jay_2012

It doesn't look like my previous employer made any student loan deductions, which makes sense as I was there for a year, and prior to that I was self-employed and earning under the repayment threshold.

My current employer took out £60 in total for student loans according to my P60.

I think the issue is probably due to my current employer because if I leave these details out of my return, the total to pay calculation is only £323.