A mortgage is more than principal and interest. Property taxes, homeowners insurance, and HOA dues quietly push the true monthly cost hundreds of dollars above the sticker payment. This calculator rolls all of them into one honest number so you can budget with confidence.
How it works
Subtract your down payment from the home price to get the financed amount, then apply the standard amortization formula for the interest rate and term. Annual taxes and insurance are divided by twelve; monthly HOA dues are added directly to the monthly payment — the same PITI figure lenders use to qualify you.
A quick example
On a $400,000 home with 20% down at 6.5% for thirty years, principal and interest run about $2,022. Add $4,800 in yearly taxes and $1,800 in insurance and the real monthly cost climbs above $2,570 — the difference between a comfortable budget and a stretched one.
Tips for accurate results
Ask your agent for the actual annual tax bill rather than guessing from a percentage — assessments vary widely by county. Include HOA dues even if they seem small; over thirty years they add up to real money. And remember that a larger down payment reduces both the loan and the monthly interest.
Try different down payments and terms to find the sweet spot for your budget.