Lightbulbmoment G

Thank you for answering. Not sure yet if might go over the psa or not for the current tax year so will leave it as is for now. Is it a case of just making sure I have enough to pay any tax incurred when I submit at the end of this tax year? Would rather do that and pay any actual amount than mess my tax code up with estimates - not sure if estimates that’s the right word.

Hi I’m employed and have PAYE tax and I am also self employed and complete a self assessment tax return. I understand I have a personal savings allowance of £1000. If I was to exceed the psa of £1000 in interest and need to pay tax would it be done via my self assessment tax return rather than altering my tax code for my PAYE job? I’m not keen on my tax code changing and the possibility of under and over payments. If I submit my self assessment and pay any tax on interest that way will it stop the change of my PAYE tax code? At what point in the year do you change tax codes? I’m imagining the banks inform HMRC about interest at the end of the tax year so how soon after this do you change tax codes?