Extra $1,000/Month on a $500,000 Mortgage
Calculate the interest savings and payoff date when you add $1,000 per month to a $500,000 mortgage at 7%.
How to use this tool
- Enter mortgage balance, annual interest rate, remaining term and extra monthly payment in the fields above.
- Results update instantly as you type — or click Calculate.
- Read your interest saved and the full breakdown beneath it.
An extra $1,000 a month on a $500,000 mortgage can save hundreds of thousands in interest over time.
Frequently asked questions
- Should I pay extra principal or invest the money?
- It depends on your mortgage rate vs. expected investment return. If your mortgage rate is higher than after-tax investment returns, paying down debt is the better risk-adjusted move.
- How do I make sure extra payments reduce principal?
- Tell your lender to apply any extra amount to principal, not the next month's payment. Most servicers allow this online or by note on a check.