Plan It - Adjusted Balance

Adjusted Balance $1,000

I have a plan it plan, 26.50/month, $85 Principal Left $20 Fee, 4 payments left.

If I pay $1,085 ($85 extra than adjusted), will the $85 go towards the plan it plan, and be wiped away?

Or do I need to pay $1105 to have plan wiped away?

This is a plan that has least payments left.