This example teaches you how to create a loan amortization schedule in Excel. 1. We use the PMT function to calculate the monthly payment on a loan with an annual interest rate of 5%, a 2-year duration and a present value (amount borrowed) of $20,000. We. Bookkeeping for my husbands business. DR Plant (fixed asset) 82250 + 200 (option to purchase) DR VAT 16450 + 40 (option to purchase) DR Document fee 200. CR HP Loan (long term liab) 74465 + 17581.20 interest. CR bank 24675 (VAT + 10% payable upfront).