Mortgage guides and free calculators for U.S. homebuyers

Clear, practical guides to home loans, refinancing and first-time buying, plus free calculators to run your own numbers.

Free mortgage calculators

Run your own numbers before you talk to a lender.

Mortgage Calculator

Your monthly payment with taxes, insurance and PMI.

How Much House Can I Afford

A realistic price range for your income and debts.

Rent vs Buy Calculator

Compare the true cost of renting and owning.

Mortgage Payoff Calculator

See how extra payments shorten your loan.

Debt-to-Income Calculator

Check your DTI against lender limits.

Mortgage Points Calculator

Find out when buying points actually pays off.

Latest guides

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Hi, I’m José María

I started Finanzasclave to explain mortgages and home buying in plain English, with clear examples and free calculators you can use before talking to a lender.

Buying your first home?

Start with the basics: how much you need for a down payment, how pre-approval works and what closing costs to expect.

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