Selected Answer
Hi Shayner and welcome to the Forum
As an alternative to Willie's Answer, you use a simple (and probably less confusing) VLOOKUP formula, especially if you have a version earlier than Excel 2013 which introduced INDEX and MATCH.
Your bonus step figures in column D are in ascending order so it's enough to set the lookup value, range and return the value from column 4 of that range. (For completeness I set the 4th argument to TRUE - which means Excel doesn't look for a exact match but works on the last value which B11 exceeded - but you can omit it since that's the default for VLOOKUP).
The formula:
=VLOOKUP($B$11,D15:G130,4,TRUE)
returns the uncapped bonus.
To cap that amount, you just need to wrap the Min (minimum) function around that and set the maximum bonus, changes in bold below (and without that 4th argument):
=MIN(VLOOKUP($B$11,D15:G130,4),13000)
If the VLOOKUP formula returns $15,000 say, this formula gives the lesser figure, i.e. $13,000.
That formula applies to Jenn and Eva but the formula needs to change for Mary (with the additional 1%). If that addition applies to both the bonus and the $13,000 cap, then B17 is:
=1.01*MIN(VLOOKUP($B$11,D15:G130,4),13000)
If the $13000 bonus cap applies still, that becomes:
=MIN(1.01*VLOOKUP($B$11,D15:G130,4),13000)
and she never gets more than $13,000.
Hope this helps. if so, please mark this Answer as Selected. If you prefer Willie's, do that for his instead. Thanks in advance.