Using HP 10bII for Loans with Balloon Payments

12 [Shift] [P/YR] (set calculator to yearly)

Part 1 - Find the monthly payment

Enter 150,000 and press [PV]
Enter 30 and press [Shift] [N x P/YR]
Enter 6.75 and press [I/YR]
Press [PMT]
Display -1,140.55 (Answer, the monthly payment)

Part 2 - calculate the payoff

Enter 8 and press [Shift] [N x P/YR] (8 years or 96 months)
Press [FV]
Display -112,357.70 (is the amout to payoff the loans)