Casita: Mortgage Calculator

Casita: Mortgage Calculator

by Ignacio De Navascues

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  • Released
  • Updated
  • April 28, 2026
  • April 28, 2026
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Casita · Honest mortgage calculator Knowing how much a house really costs shouldn't take 30 minutes and a dozen browser tabs. Casita calculates your monthly payment, breaks down the full amortization schedule and compares real loan products — without asking for your email, your phone number or any other personal information. WHAT YOU CAN DO · Calculate your monthly principal & interest payment instantly · See the full amortization table, month by month, with chart · Compare conventional, FHA, VA and ARM loans side by side · Estimate closing costs (origination, appraisal, title, escrow, taxes) · Find out how much home you can afford (28/36 front/back-end DTI rules) · Decide between buying and renting with the opportunity cost of your down payment baked in · Estimate rental yield if you'd rent it out · Project how much you save with extra principal payments · Check 30-year fixed and ARM rates, updated daily · Save scenarios locally — no account required REAL DATA, OFFICIAL SOURCES Freddie Mac MORTGAGE30US for the benchmark 30-year fixed. Federal Reserve H.15 release for ARM indexes. Lender rates refreshed weekly. OUR VALUES · Independent. No bank owns us. · No mandatory sign-up. · Mathematically correct — French amortization, APR via Newton-Raphson. · Honest ads via AdSense, with your consent. BUILT FOR 6 COUNTRIES USA · Spain · Mexico · Argentina · Colombia · Chile Each country with its local currency, terminology and regulation: conventional/FHA/VA in the US, Ley 5/2019 in Spain, Infonavit in Mexico, UVA in Argentina, Mi Casa Ya in Colombia, DS1/DS49 subsidies in Chile. Built in Madrid, in Fraunces, with care. casitacalc.com
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What's New in Casita

1.0

April 28, 2026