Reducing Taxable Pay

I’ve make AVC pension contributions from my gross salary each month so that these AVC payments reduce my taxable salary down to €28k. This saves that component of my salary being taxed at 42%.

After I receive my December pay soon I expect that my taxable pay will still be well over €28k. I should have increased my monthly AVC contributions a little more during the year to reduce my gross further. After Decembers pay can I pay the revenue the extra AVC contributions that I should have paid throughout the year so that my final taxable pay is spot on €28k? If so how do I do it? Any payment from me now will come from my net income so how will this be addressed?

Thanks

"After Decembers pay can I pay the revenue the extra AVC contributions that I should have paid throughout the year so that my final taxable pay is spot on €28k?"

should have read:
"After Decembers pay can I pay my pension providers (it's a company pension) the extra AVC contributions that I should have paid throughout the year so that my final taxable pay is spot on €28k? "

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Just what I needed. Thanks.