h88

Hello i currently work 17 hours a week with my first job and tax is already calculated on this job a few months ago I started bank locum shifts in which I do two a month, I need to do a self assessment tax return, my query is would this be for April next year or this year? also would the basic rate of tax on my second job be taxed per shift or overall money earned from when i started the bank work to when i do a self assessment tax return? thankyou