Entwista Baxter

Hi Hmrc My SA tax bill is less than £3000 and I elected to have my tax paid through adjustment of my tax code. I want to make a part payment against this so I can reduce the amount of tax collected through my tax code. How do I do this? I seemed to get different answers from the helpline, one person noted I could send a cheque but not sure to who / where etc? Just seems a bit odd that cheque as these are phasing out. Any option to pay electronically? Thanks

Hi I completed a self assessment for higher child benefit charge 2023-2024 and paid an amount into my online tax account. I can see the credit ok but it notes it is unallocated. My tax code is being adjusted for 25-26 for this amount of tax owed in 23-24 but I wanted to reduce the amount owed through my tax code by paying some upfront online. How do I use my unallocated credit against my tax code for 25-26? Do I need to request a repayment and then send a cheque in to use against my tax code? Thanks