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Change of tax code to LX

Hi

Appreciate any help as I have no knowledge  I have been notified today that my tax code has changed from 1166L to 923LX and this is due to untaxed interest from savings which is £2409. 

I understand that LX means emergency tax code will my monthly tax deductions be a massive difference now?

I am a basic rate tax payer 

thanks 

Comments

  • Dazed_and_C0nfused
    Dazed_and_C0nfused Posts: 19,544
    10,000 Posts Sixth Anniversary Name Dropper
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    edited 17 January 2025 at 9:52PM
    X is not part of a tax code.

    L signifies you are currently getting the standard Personal Allowance of £12,570.

    X signifies the tax code will be operated on a non cumulative basis.  Basically this means your employer or pension payer will use the new code from now without making reference to your income or tax paid earlier in the tax year.

    There is only one "emergency tax code" and that is 1257L.


  • molerat
    molerat Posts: 36,581
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    edited 17 January 2025 at 10:00PM
    They have reduced your tax allowance from £11660 to £9230 which on a monthly basis taxes you on an extra £202.51 so paying an additional £40.50 per month, £121.50 over the next 3 months.

    Never associate with idiots on their own level, because, being an intelligent man, you'll try to deal with them on their level - and on their level they'll beat you every time.

    Being hated by idiots is the price you pay for not being one of them.

    Jean Cocteau 1889-1963

  • Thank you for the explanation. 

    Will this increase how much tax I will now pay?
  • Dazed_and_C0nfused
    Dazed_and_C0nfused Posts: 19,544
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    edited 17 January 2025 at 10:03PM
    Thank you for the explanation. 

    Will this increase how much tax I will now pay?
    Almost certainly yes.

    You will start paying tax from £178/week now, instead of £225/week before.

    It will probably change again from 6 April although you might not get the tax code for the next year just yet.
  • molerat said:
    They have reduced your tax allowance from £11660 to £9230 which on a monthly basis taxes you on an extra £202.51 so paying an additional £40.50 per month, £121.50 over the next 3 months.
    Thank you for clarifying. 

    Will my tax code be reverted back at start of the new financial year
  • molerat said:
    They have reduced your tax allowance from £11660 to £9230 which on a monthly basis taxes you on an extra £202.51 so paying an additional £40.50 per month, £121.50 over the next 3 months.
    Thank you for clarifying. 

    Will my tax code be reverted back at start of the new financial year
    It will likely change but not necessarily to 1166L.  You should be notified of the new tax code sometime between now and March.
  • Thank you for the explanation. 

    Will this increase how much tax I will now pay?
    Almost certainly yes.

    You will start paying tax from £178/week now, instead of £225/week before.

    It will probably change again from 6 April although you might not get the tax code for the next year just yet.
    Thank you much appreciated
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