// multi-utility computation suite · offline · instant · precise
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finance.mortgage-alpha-generation Calculator
Calculates investment alpha (excess return above the CAPM-predicted benchmark) in a mortgage and property investment strategy. True alpha is increasingly rare — after fees and taxes, most active managers underperform their benchmark, making passive indexing the default recommendation.
Inputs
Price
The agreed sale price of the home. Your down payment is typically a percentage of this figure.
Down
Cash paid upfront, reducing the amount you borrow. Putting down 20%+ typically eliminates private mortgage insurance (PMI).
Rate
The rate at which interest accrues. Small differences compound dramatically — compare carefully when choosing between lenders.
Term
Reference formula or conversion factor shown for context.
Results
loan amount
The principal borrowed — the starting balance before any interest accrues.
monthly payment
Fixed monthly instalment covering principal and interest. Does not include property tax or insurance unless explicitly shown.
total paid
Sum of all payments made — principal plus all interest. Subtract the loan amount to see the pure interest cost.
total interest
Cumulative interest paid over the loan term. Paying even a little extra each month toward principal can save tens of thousands.