What is the monthly payment on a $40,000 loan at 15% for 10 years?
Answer
$645/month
Monthly payment: $645Total interest: $37,441Total cost: $77,441120 monthly payments
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How We Calculated This
M = P × [r(1+r)^n] / [(1+r)^n - 1]
P=$40,000, r=15%/12=1.2500%, n=120. M = $645
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Calculated using verified formulas. Last updated March 2026.