California Refinance Calculator
Calculate whether refinancing your mortgage saves money in California
California Calculator
Get accurate results
Updated for 2025 with real California rates, brackets, and regulations
Refinancing in California has a unique advantage: it does NOT trigger a Proposition 13 reassessment. Your property tax base stays locked at the original purchase price regardless of how many times you refinance. This makes refis purely about the mortgage rate — no hidden tax consequences. With CA's high loan amounts (often $500K-$1M+), even a 0.5% rate reduction can save $200-$400/month. This calculator shows break-even timing, monthly savings, and confirms your Prop 13 base is protected.
Calculate Your CA Tax
Monthly Savings
616$/mo
Current Payment
3,695$/mo
New Payment
3,079$/mo
Break-Even
10 months
Closing Costs
$6,000
Interest Saved
$196
Prop 13 Note
Tax basis unchanged
Breakdown
Insight
Refinancing from 7.5% to 6.25% saves $616/month. Break-even point: 10 months. This is a solid refinance. Important CA note: Refinancing does NOT trigger a Prop 13 reassessment — your property tax basis stays at the original purchase price. However, a cash-out refinance that exceeds the original loan amount may have different implications.
AI Explanation
What This Means
Based on default inputs, the California Refinance Calculator shows a monthly savings of 616 $/mo. Key figures: Current Payment: 3,695$/mo, New Payment: 3,079$/mo, Break-Even: 10 months, Closing Costs: $6,000, Interest Saved: $196, Prop 13 Note: Tax basis unchanged.
Key Insights
Refinancing from 7.5% to 6.25% saves $616/month. Break-even point: 10 months. This is a solid refinance. Important CA note: Refinancing does NOT trigger a Prop 13 reassessment — your property tax basis stays at the original purchase price. However, a cash-out refinance that exceeds the original loan amount may have different implications.
What You Can Do
Enter your actual figures in the calculator above for a personalized breakdown. Consider consulting a tax professional for comprehensive planning, especially for complex situations involving multiple income sources or deductions.
Keep In Mind
This calculator provides estimates based on 2026 rates. Actual tax liability may vary based on credits, exemptions, and other factors not captured here. This is for educational purposes only and should not be considered tax advice.
How the California Refinance Calculator Works
The California Refinance Calculator uses 2026 tax rates, brackets, and deductions specific to California to provide you with an accurate estimate of your tax obligations. Unlike generic federal-only calculators, this tool accounts for the unique tax structure that California residents face.
Formula
Monthly Savings = Current Payment - New Payment. Break-Even = Closing Costs ÷ Monthly Savings. Prop 13 base: unchanged.Simply enter your financial details above, and the calculator instantly computes your results using the latest available data. All calculations happen directly in your browser — your personal information is never sent to any server or stored anywhere.
Why Use a California-Specific Calculator?
State-Specific Rates
Uses real 2026 California tax brackets, rates, and thresholds — not generic national averages that miss state-level nuances.
Local Programs & Exemptions
Factors in California-specific programs, exemptions, and deductions that national calculators simply don't account for.
Instant & Private
All calculations run locally in your browser. No account required, no data stored, no waiting for results.
AI-Powered Explanations
Get a plain-English breakdown of your results with actionable insights you can actually use for financial planning.
What's Included
Prop 13 Protected
Confirms refinancing does NOT trigger property tax reassessment
Break-Even Analysis
Shows exactly when refinancing pays for itself in monthly savings
High-Value Savings
Optimized for CA's large loan amounts where small rate changes save thousands
Frequently Asked Questions
Does refinancing reset my Prop 13 property taxes?
No. Refinancing does NOT trigger a Prop 13 reassessment. Your assessed value remains at the original purchase price plus 2%/year increases. Only a sale or new construction triggers reassessment.
What are typical refinance closing costs in California?
Closing costs for a CA refinance typically run $3,000-$8,000 depending on loan size. This includes appraisal ($400-$600), title insurance, escrow fees, and lender origination fees. No-cost refis roll these into the rate.
When does it make sense to refinance in California?
Generally when you can reduce your rate by 0.5%+ and plan to stay in the home long enough to recoup closing costs. On a $700K loan, a 0.5% reduction saves ~$250/month — breaking even in 12-24 months.
Can I refinance a jumbo loan in California?
Yes. CA has a robust jumbo refinance market due to high home values. Many lenders offer competitive jumbo rates, sometimes even lower than conforming rates for strong borrowers with high credit scores.
Should I do a rate-and-term or cash-out refinance?
Rate-and-term if you just want a lower payment. Cash-out if you need funds (renovation, debt payoff). Cash-out typically carries a 0.25-0.5% higher rate and may require higher credit scores.
Important Information for California Residents
Tax laws in California can change annually. This calculator is updated regularly to reflect the latest 2026 rates and regulations, but you should always verify important financial decisions with a qualified California tax professional or CPA.
This tool is designed for informational and educational purposes. While we strive for accuracy using official California Department of Taxation data, the results should be used as estimates for planning purposes only. Your actual tax liability may differ based on credits, special circumstances, and legislative changes that occur after our last update.
For filing deadlines, payment schedules, and official forms, visit the California Department of Taxation and Finance website. If you have complex tax situations involving multiple states, business income, or significant investment gains, professional guidance is recommended.
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