The APR that the monthly payments is being calculated on today will be 10.5%.
It should be noted that the annual percentage rate(APR) will be calculated as:
= Index + Margin
Based on the information given, the APR will be:
Index = 4.5 - 4.0 = 0.5
APR will be:
= (0.5 + 6) + 4
= 6.5 + 4.
= 10.5%
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