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HMRC increasing tax on salary due to savings

Gromit78
Gromit78 Posts: 8 Forumite
Part of the Furniture First Post Combo Breaker
edited 4 December 2025 at 1:06PM in ISAs & tax-free savings
I have recently changed jobs and had a pay increase which puts me in the 40% tax bracket and I hadn't fully understood all the implications this will have. 
HMRC took an additional £300 in income tax in my November pay and when I called them to find out more this is when it became apparent that it's due to interest on savings. I have now asked HR to increase my salary sacrifice pension contribution an additional 2% which should take me back to being a standard rate tax payer (and end up with similar or more money paid to me after tax from now on).

I've now bought up to the maximum value of premium bonds. What else can I do besides ensuring I have maxed out my ISA allowance for this year and then be ready to max out next year's allowance when the new tax year starts? 

Short of taking the money out of the bank and hiding it under the bed (which I'm not going to do), what else can I do to maximise my tax free savings?

Also I should say HMRC read out the last 4 digits of the accounts they are referencing when applying the increase in my tax paid. However, I only have about half of them on my savings/banking spreadsheet which I maintain, so I'm unsure how to identify the rest of them and determine whether have since been closed and can advise HMRC of this fact.


Comments

  • wmb194
    wmb194 Posts: 5,759 Forumite
    Part of the Furniture 1,000 Posts Name Dropper Photogenic
    edited 4 December 2025 at 4:20PM
    Gromit78 said:
    I have recently changed jobs and had a pay increase which puts me in the 40% tax bracket and I hadn't fully understood all the implications this will have. 
    HMRC took an additional £300 in income tax in my November pay and when I called them to find out more this is when it became apparent that it's due to interest on savings. I have now asked HR to increase my salary sacrifice pension contribution an additional 2% which should take me back to being a standard rate tax payer (and end up with similar or more money paid to me after tax from now on).

    I've now bought up to the maximum value of premium bonds. What else can I do besides ensuring I have maxed out my ISA allowance for this year and then be ready to max out next year's allowance when the new tax year starts? 

    Short of taking the money out of the bank and hiding it under the bed (which I'm not going to do), what else can I do to maximise my tax free savings?

    Also I should say HMRC read out the last 4 digits of the accounts they are referencing when applying the increase in my tax paid. However, I only have about half of them on my savings/banking spreadsheet which I maintain, so I'm unsure how to identify the rest of them and determine whether have since been closed and can advise HMRC of this fact.
    Capital gains on gilts and other "qualifying" corporate bonds are tax free*. Buying low coupon conventional gilts below par (£100/100p) and holding them to maturity is one way to earn a guaranteed tax free return. Their coupons are taxed as interest but they're very small. You buy them via a stockbroker e.g., AJ Bell, Hargreaves Lansdown, Freetrade, iWeb/Halifax Sharedealing.

    In the table below look for e.g., TG26A, TN28, TG29 and TR29. If you search the investments board you'll find some threads on gilts.

    *The flip side is that capital losses aren't allowable against taxable capital gains.

    https://giltsyield.com/bond/


  • Since you'll be back down to basic rate the case for premium bonds is a little sketchy - you could make more with a good savings account even after tax. How is your pension looking? Contributing to a SIPP would a) give you even further margin so that any gains in other investments don't take you into a higher tax bracket and b) while not strictly tax free, currently benefit from a 25% tax free element (capped).
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