Mortgage Calculator for California
Estimate your monthly payment in California using adjustable example inputs and official housing resources.
Enter Your Loan Details
Defaults are illustrative inputs, not local averages. Replace taxes, insurance and rate with property-specific estimates.
Planning a purchase in California
The prefilled price, tax percentage, and interest rate are illustrative inputs, not verified California averages or lender quotes. Replace them with the property's price, a local tax estimate, an insurance quote, and your lender's rate.
Supplemental assessments after a purchase
California can issue a supplemental property-tax bill when ownership changes or construction is completed. This is separate from the regular annual bill and reflects the difference between the previous assessment and the new assessed value, prorated for the relevant part of the fiscal year.
For your estimate: Ask the county assessor for the post-purchase annual estimate before setting Annual Property Tax (%). Budget any supplemental bill separately; the monthly calculator does not model its timing.
California BOE: supplemental assessmentsEarthquake coverage is a separate decision
The California Department of Insurance explains that ordinary homeowners policies do not cover earthquake damage. Earthquake insurance has its own coverage limits and deductible; buying it does not mean every earthquake-related loss is covered.
For your estimate: If purchasing earthquake coverage, include its quoted annual premium alongside the homeowners premium in Annual Home Insurance ($). Keep deductible reserves outside the monthly payment estimate.
California Department of Insurance: earthquake insuranceCalHFA MyHome is a junior loan
CalHFA's MyHome assistance is a deferred-payment junior loan for down payment or closing costs, with different provisions for its FHA and conventional first mortgages. Applicants must meet income, occupancy and education requirements and work through an approved loan officer.
For your estimate: Ask for the first mortgage and MyHome terms together. Assistance is not automatically a grant or a reduction in the home's price; this tool does not model a second loan's repayment.
CalHFA: MyHome Assistance ProgramLocal guidance reviewed . Confirm eligibility, funding and property-specific costs directly before making a decision.
Using local estimates in this tool
The tax field multiplies the home's price by a percentage. If your assessor estimates an annual tax bill, divide that bill by the entered home price and multiply by 100. Do not enter an assessment ratio or millage directly. For example, an illustrative $4,800 annual bill on a $400,000 price corresponds to 1.2%; these are not local averages.
This payment includes principal, interest, property tax and home insurance. Budget mortgage insurance, HOA dues, maintenance and closing costs separately.
Official resources and next steps
HUD housing and homeownership resources for California provides further counseling and housing contacts.
For FHA financing, use HUD's county and unit-count lookup. Select California, the property's county, the calendar year, and the number of units. The 2026 national one-unit floor of $541,287 is a baseline, not a determination of the limit for every county in California.
HUD directory reviewed 2026-09-25. HUD state directory. Local figures are not represented as verified statistics.
Amortization Schedule
| Year | Principal Paid | Interest Paid | Tax Paid | Insurance Paid | Balance |
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How to Use This Mortgage Calculator in California
Enter the price of the property you are considering in California, then adjust the down payment and rate. The payment combines principal, interest, property tax, and insurance. It does not include HOA dues, maintenance, or mortgage insurance.
For example, at the illustrative price of $765,000 and 7% down, the base loan is $711,450. These are calculation examples, not a statement about prices or typical buyers in California.
Compare the same home under different rates and down payments. A lower monthly payment from a longer term can still mean more lifetime interest. Confirm taxes and insurance for the property before relying on the estimate.