Self-Assessment on French Salary

Hello, I arrived in UK this year and will be considered as resident for tax year 2024/2025. I will have to do a Self-Assessment after this tax year. My only income is a french salary (from my french employer): - Gross amount : 2643£/m - Social contributions : 608£/m (directly take on my salary) - Tax : 200£/m (directly take on my salary) So after that, my net salary is 1834 £/m Social contributions are composed by : health and pension contributions, deductible CSG, Non-deductible CSG. What will be the amount to declare during my self-assessment (in which field) and what amounts can I subtract (claim refief)? Indeed, I don't get the gross salary directly. (so paying tax on the gross salary seems strange to me...) It would be great to have the detail of which form will I have to fill and which fields. Thanks you in advance for your reply, TC

Hi,
As you will be tax resident in the UK for the whole tax year, your French employment income will be taxable only in the UK and declared in a self assessment tax return. You can request a certificate of residence at:
How to apply for a certificate of residence to claim tax relief abroad
The certificate can be given to the French tax authorities, so that your employment income does not have tax deducted.
Thank you

Hi, Thank you for your reply. I have applied for this certificate few days ago. Can you please provide me some clarifications about the amount I will have to declare in which field/forms (related to information provided above). Also, I have social contributions already take on my salary : How to deal with that in my self assessment ? Best regards TC

Hi,
Please refer to guidance at:
Tax on foreign income
Thank you