Personal Allowance and Pension Tax Calculator

bms0921

Hi!

My salary is currently £100,000 and I have the potential to earn ~25% bonus annually, paid out in March. This is variable depending on performance / business results but is typically around £25,000. 

I completed a self-assessment for 2021/2022 in December 2022 and had an overpayment of £2800 which I'm repaying over 12 months. I have adjusted my estimated income online so my personal allowance is also being deducted. 

All of this means that my monthly income is ~£4,700 and has actually gone down about £300 since my pay increase. 

It feels like I'm missing something about maximising my salary. I know tax is 60% + 2% NI between 100-125k and I should maximise pension contributions but I can't find a calculator to help me work out what this looks like and the impact it would have on my take home pay on a monthly basis. I saw someone on another thread had figured this out but I was wondering if anyone knows a calculator or a tool I could do to work through this? My nervousness at putting more in a pension is that my brain assumes I'll have less money to take home but I don't think my understanding is correct and I can't work out how to calculate it. 

Can anyone point me in the right direction? 

Big thanks

Jeremy535897

If you pay £20,000 of your bonus into your pension scheme, that grosses up to £25,000 and extends your basic rate band by £25,000.

bms0921

I understand the principle but was hoping there was a calculator / tool available that could show what this looks like on a monthly basis / impact on my take home pay?