The borrower has a negative net cash flow overall, meaning they paid out more than they received.
Net Cash Flow for each month:
Borrower's Perspective:
Month Cash In Cash Out Net Cash Flow
January 1000 0 1000
February 0 100 -100
March 0 100 -100
April 500 100 400
May 0 150 -150
June 0 150 -150
July 0 150 -150
July 0 1500 -1500
Total 1500 2200 -700
Bank's Perspective:
Month Cash In Cash Out Net Cash Flow
January -1000 0 -1000
February 100 0 100
March 100 0 100
April 100 0 100
April 0 -500 -500
May 150 0 150
June 150 0 150
July 150 0 150
July 1500 0 1500
Total 2100 -500 1600
Notes:
The borrower has a negative net cash flow overall, meaning they paid out more than they received.
The bank has a positive net cash flow, meaning they received more than they paid out.
The calculations assume simple interest.