How to Calculate Your Monthly Roof Payment Project Cost x Factor = Estimated Monthly Payment
To calculate your monthly roof payment, multiply the total contract cost by the factor associated with your repayment term (listed below). For example, if the project cost is $10,000 and you have a repayment term of 120 months, multiply the project cost ($10,000) by the appropriate factor (0.01493) to get the estimated monthly payment ($10,000 x 0.01493 = $149.30 per month).
Financing Term
|
Factor
|
24 months
|
0.04567
|
36 months
|
0.03179
|
48 months
|
0.02535
|
60 months
|
0.02124
|
72 months
|
0.01954
|
84 months
|
0.01765
|
120 months
|
0.01434
|
144 months
|
0.01313
|
180 months
|
0.01200
|
240 months
|
0.01171
|