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Mortgage Calculator
Monthly payment, total interest, and amortization schedule. If you have the cash to buy outright, the opportunity-cost panel shows which path builds more wealth.
Loan Details
Additional Monthly Costs
Principal & Interest
7% fixed, 30-year term
Property Tax
1.1% of home value annually
Homeowners Insurance
Estimated at 0.5% of home value
Total Monthly Payment
Principal, interest, taxes & insurance
Over 30 Years
Loan principal
Total interest paid
The true cost of borrowing
Total loan cost
Balance Over Time
Cash vs. Mortgage: Opportunity Cost
If you had enough cash to buy outright, which path builds more wealth? Both scenarios assume the same monthly cash outflow — either paid to a lender or invested.
Pay cash → invest the monthly savings
No interest cost. Invest $5,322/mo at 7% for 30 years.
$6,493,198
Take mortgage → invest the loan amount upfront
Invest $800,000 at 7%, minus $1,116,071 in interest paid.
$5,377,127
Cash path leads by $1,116,071 at 7% returns
The crossover point is roughly where your investment return exceeds your mortgage rate by enough to offset the interest cost. This comparison is pre-tax and assumes consistent investment returns — neither is guaranteed. Read the full analysis →
Should high-net-worth buyers take a mortgage?
The answer depends on the interest rate environment, your expected investment return, and your discipline with money. It's more nuanced than most people realize.
Read the full analysis →Planning a jackpot win?
Walk through taxes, investing, and monthly budgeting for any jackpot size — free, no account needed.
Start Planning →Estimates only. Property tax, insurance, and PMI are approximations. Opportunity-cost projections are pre-tax and assume consistent returns — neither is guaranteed. Not financial advice.