IF Formula Closing Bracket is a issue for me

=round(if(((today()-e3)/365)<60,if(bb3<=250000,0,if(bb3<=500000,((bb3-250000)*5%),if(bb3<=750000,((bb3-500000)*10%+12500),if(bb3<=1000000,((bb3-750000)*20%+37500),if(bb3<=1250000,((bb3-1000000)*25%+75000),if(bb3<=1500000,((bb3-1250000)*30%+125000),((bb3-1500000)*30%+187500)))))),0),if(((today()-e3)/365)>80,if(bb3<=500000,0,if(bb3<=750000,((bb3-500000)*10%),if(bb3<=1000000,((bb3-750000)*15%+25000),if(bb3<=1250000,((bb3-1000000)*20%+62500),if(bb3<=1500000,((bb3-1250000)*25%+112500),((bb3-1500000)*30%)+175000)),if(bb3<=300000,0,if(bb3<=500000,((bb3-300000)*5%),if(bb3<=750000,((bb3-500000)*10%+10000),if(bb3<=1000000,((bb3-750000)*15%+35000),if(bb3<=1250000,((bb3-1000000)*20%+72500),if(bb3<=1500000,((bb3-1250000)*25%+122500),((bb3-1500000)*30%+185000))))),0)

This looks like a variable rates problem
Much simpler like this http://www.mcgimpsey.com/excel/variablerate1.html

I try to apply the multiple if condition to calculate the tax where in its say the error as "Your formula is missing a parenthesis--) or (.check the formula,and than add the parenthesis in the appropriate place"
Please guide me what needful can be done - BB3 cell is Total Taxable value from that this formula should apply.

Administrative Note:

Welcome to the forum.

We would very much like to help you with your query, however it has been brought to our attention that the same query has been posted on one or more other forums and you have not provided the required cross-post link(s) here.

Please see Forum Rule #3 about cross-posting and adjust accordingly. Read this to understand why we (and other sites like us) consider this to be important.

Note: As you are new I will add it for you.Please read forum rules which you might have missed

https://chandoo.org/forum/threads/if...-for-me.44142/

I understand your frustration JeteMC.
FWIW you can always add the OP to your "Ignore list"?
Thanks for your hard work