Paying tax on interest NOT via tax code

My interest this year will just exceed £1000 but next year it will be close to or probably above £10000. I don’t want this included in my tax code. So I need to pay directly. Can I voluntarily fill in a self assessment return for this year and in all subsequent years ( I realise if interest is over 10k then I must file) and arrange to be billed for my tax owed directly? When would I need to pay, presumably shortly after filing a return for the previous year? Do I need to provide an accurate estimate of the amount owed in the previous years tax return ( I’m concerned there is some penalty if I pay the following year for interest earned in the previous tax year).

Hi ,
 

As the interest is below £1000 then you do not meet the criteria for filing a Self Assessment tax return. If there is an underpayment through your PAYE records once reviewed then if you do not want the balance collected in your tax code then you can contact HMRC for payment options see: Income Tax: general enquiries  . Thank you .