Hey Forum, I received an error when trying to submit my self-assessment for the years 2023-24. it is the first time I have gotten an error so not sure what will be the next step and hope you will be able to help. Error 6594 Self-Calculation Case - The total tax overpaid in box [CAL2] does not agree with the calculated value. the difference is £128.80. please check. I thought it might be related to currency exchange differences, so I used a different exchange rate, but I kept getting the error with the amount of £128.80. I tried to remove and re-insert some sections but got the same number. I thought I would be able to submit the tax early this year, but completely got stuck. do you know what the section could impact box [CAL2]? or any other suggestions? Thanks,