Tax relief for Pension contribution over 10k and filing Self Assessment Tax Return

Hi, I plan to make an additional one-off contribution to my employer's private pension fund of over £10k. On the website, I read, "If you’re paying in an amount greater than £10,000, you’ll need to contact HMRC to claim the tax relief.". As I need also to file a self-assessment tax return, do I still need to write to HMRC to claim the additional tax relief or is it automatically sorted through the self-assessment tax return?

Hi,

It will be sorted through your tax return, but if you wish to benefit from it earlier, you would need to write in with evidence for your code to be amended.

Thank you.