Here is a detailed list of top paying google adsense keywords from financial sector. This is probably the best paying niche along with medical field. The data is obtained directly from google's tools itself. But no claims are made about the accuracy of the data, due to the volatile nature of the adwords keyword bidding.
manhattan mortgages $26.70
school loans $26.61
term insurance $26.58
second mortgage $26.56
credit report com $26.48
auto ins $26.21
consolidation $25.90
line of credit $25.57
landlords insurance $25.46
low mortgage $25.45
commercial vehicle insurance $25.37
credit consolidation $25.32
bad credit mortgages $25.22
bad credit mortgages $25.22
discount life insurance $25.22
gm credit card $24.72
debt consoladation $24.68
best credit card rates $24.64
mortgage com $24.59
north carolina mortgages $24.59
life insurance quote online $24.51
debt consolidaton $24.35