Possible Clues:

• Conclusion ... or, in three parts, what four answers in this puzzle unexpectedly do
• Credits follow it
• Following fifty, one might be making a loan at last
• The fin is the last thing this is what it's for
• Termination, conclusion
• Being inclined to remove the beginning and last part
• Double you with this to be going on away at last
• Finish fixing without starting!
• At last!
• This might make it last