estimated earnings for 2024/25 too high

Hi this is my 1st post so please bear with me. I have just checked online my tax estimate for the new year. My only income for 2024/25 will be my state pension however my tax estimate for the year is my state pension of £11502 plus additional income of £5189. I have no idea where the additional estimated income has come from as I have not been in any employment for in excess of 10years. I understand his is an estimate for the year but would be interested if anyone could explain where the additional estimate may have come from. My assumption is at the end of the tax year this figure will be corrected and my only taxable income will be my state pension

Hi 

We would need to access your record to check/update your tax code.
You can contact HMRC at Income Tax: general enquiries

Thank you