Understand the answer.

• Home price ($)
• Down payment (%)
• Annual interest rate (%)
• Term (years)
• Annual property tax ($)
• Annual home insurance ($)
• Monthly mortgage insurance ($)
• Monthly HOA fees ($)
• Other monthly ownership costs ($)
• Annual tax increase (%)
• Annual insurance increase (%)
• Annual HOA increase (%)
• Extra monthly principal ($)
• Extra annual principal ($)
• One-time extra principal ($)
• One-time payment month
• First payment month

Loan = price × (1−down payment%). Monthly payment = Pr/[1−(1+r)^−n].

• Starting amount ($)
• Regular contribution ($)
• Contribution frequency
• Nominal annual return (%)
• Time horizon (years)
• Compounding per year
• Contribution timing
• Tax rate on annual interest (%)
• Annual inflation assumption (%)

Each period: balance grows at the equivalent periodic rate, then a contribution is added (or added first for beginning-of-period deposits).

• Measurement system
• Weight (kg)
• Height (cm)
• Age (years)

BMI = weight in kilograms / (height in meters)².