SIPP and personal allowance

Hi, I have a question about SIPP contributions and personal Allowances for income and savings. I currently earn £50,140 so am a lower rate tax payer, however, I am due to earn around £5,000 of interest from taxable savings outside of an ISA. As I understand it, this now makes me a higher rate tax payer as I earn £55140 from a combination of employment and savings interest. I will contribute a total of £5556 toy SIPP this year which receives 20% tax relief from my SIPP provider. My question is: 1. How do my SIPP contributions affect my personal Allowances for income tax and my Personal Savings Allowance? Does it reduce my tax liability for my earnings over £50270 and bring me back into the basic rate tax band? 2. How much would I be able to claim back on my SIPP at the additional 20% tax relief for higher earners? Or do my SIPP contributions bring me back into the basic rate tax band? Thanks in advance

Hi,
SIPP pension contributions do not reduce your overall taxable income, so your Personal Savings Allowance would be reduced to the higher rate allowance of £500.
As this makes you a higher rate taxpayer, you would be able to claim the additional higher rate tax relief of 20% on your contributions - you can claim this through
filing a Self Assessment return, or by contacting us via Self Assessment: general enquiries
Thank you.