Estimate your California state income tax liability for the 2025 tax year.
Single
Married Filing Jointly
Married Filing Separately
Head of Household
Estimated California Tax Due (2025)
Understanding California Income Tax for 2025
California's state income tax system is progressive, meaning higher income levels are taxed at higher rates. The tax rates and bracket information are subject to change annually due to inflation adjustments. This calculator provides an estimate based on the most current projections for the 2025 tax year, incorporating standard deductions and tax brackets for California.
How the California Tax is Calculated:
The calculation involves several steps:
Adjusted Gross Income (AGI): While this calculator simplifies by directly taking your reported "Annual Income," in reality, AGI is calculated by subtracting certain above-the-line deductions from your gross income.
Taxable Income: This is calculated by subtracting your deductions (either the standard deduction or itemized deductions, whichever is greater) from your AGI. For this calculator, we use your entered "Annual Income" as the starting point before deductions.
Tax Calculation: The taxable income is then applied to California's progressive tax brackets. Each portion of your income falling within a specific bracket is taxed at that bracket's rate. The total tax is the sum of the tax from each bracket.
2025 California Tax Brackets and Standard Deductions (Estimated):
Please note: These are *estimated* figures for the 2025 tax year and are subject to official confirmation by the Franchise Tax Board (FTB). They are adjusted annually for inflation.
Standard Deductions for 2025 (Estimated):
Single: $5,363
Married Filing Jointly: $10,724
Married Filing Separately: $5,363
Head of Household: $8,037
2025 Income Tax Brackets (Estimated):
The following brackets are for *taxable income* after deductions. The rates and income thresholds are estimates.
Filing Status
Tax Rate
Taxable Income Over
Taxable Income Not Over
Single / Married Filing Separately
1.0%
$0
$10,412
2.0%
$10,412
$24,684
4.0%
$24,684
$38,959
6.0%
$38,959
$54,081
8.0%
$54,081
$68,350
9.3%
$68,350
$349,147
10.3%
$349,147
$418,973
11.3%
$418,973
$628,459
12.3%
$628,459
$779,332
13.3%
$779,332
Married Filing Jointly
1.0%
$0
$20,824
2.0%
$20,824
$49,368
4.0%
$49,368
$77,918
6.0%
$77,918
$108,162
8.0%
$108,162
$136,701
9.3%
$136,701
$698,294
10.3%
$698,294
$837,946
11.3%
$837,946
$1,256,918
12.3%
$1,256,918
$1,558,664
13.3%
$1,558,664
Head of Household
1.0%
$0
$15,618
2.0%
$15,618
$37,026
4.0%
$37,026
$58,435
6.0%
$58,435
$81,120
8.0%
$81,120
$102,497
9.3%
$102,497
$523,721
10.3%
$523,721
$628,419
11.3%
$628,419
$942,647
12.3%
$942,647
$1,168,999
13.3%
$1,168,999
Disclaimer:
This calculator is for informational purposes only. It provides an estimate based on projected 2025 tax laws and standard deductions. Tax laws are complex and subject to change. Your actual tax liability may differ. Consult with a qualified tax professional or refer to official California Franchise Tax Board (FTB) publications for precise tax information and advice.
function calculateCaliforniaTax() {
var annualIncome = parseFloat(document.getElementById("annualIncome").value);
var filingStatus = document.getElementById("filingStatus").value;
var deductionsInput = parseFloat(document.getElementById("deductions").value);
var resultContainer = document.getElementById("result-container");
var estimatedTaxDisplay = document.getElementById("estimatedTax");
if (isNaN(annualIncome) || annualIncome < 0) {
estimatedTaxDisplay.textContent = "Please enter a valid annual income.";
resultContainer.style.display = "block";
resultContainer.style.backgroundColor = "#dc3545";
return;
}
if (isNaN(deductionsInput) || deductionsInput < 0) {
estimatedTaxDisplay.textContent = "Please enter a valid deduction amount.";
resultContainer.style.display = "block";
resultContainer.style.backgroundColor = "#dc3545";
return;
}
var standardDeductions = {
single: 5363,
married_filing_jointly: 10724,
married_filing_separately: 5363,
head_of_household: 8037
};
var standardDeduction = standardDeductions[filingStatus];
var effectiveDeduction = Math.max(deductionsInput, standardDeduction);
var taxableIncome = annualIncome – effectiveDeduction;
if (taxableIncome < 0) {
taxableIncome = 0;
}
var taxRate = 0;
var tax = 0;
// Using estimated 2025 brackets
if (filingStatus === 'single' || filingStatus === 'married_filing_separately') {
var brackets = [
{ limit: 10412, rate: 0.010 },
{ limit: 24684, rate: 0.020 },
{ limit: 38959, rate: 0.040 },
{ limit: 54081, rate: 0.060 },
{ limit: 68350, rate: 0.080 },
{ limit: 349147, rate: 0.093 },
{ limit: 418973, rate: 0.103 },
{ limit: 628459, rate: 0.113 },
{ limit: 779332, rate: 0.123 },
{ limit: Infinity, rate: 0.133 }
];
var previousLimit = 0;
for (var i = 0; i previousLimit) {
var taxableInBracket = Math.min(taxableIncome, brackets[i].limit) – previousLimit;
tax += taxableInBracket * brackets[i].rate;
previousLimit = brackets[i].limit;
} else {
break;
}
if (brackets[i].limit === Infinity) break; // Stop if it's the last bracket
}
} else if (filingStatus === 'married_filing_jointly') {
var brackets = [
{ limit: 20824, rate: 0.010 },
{ limit: 49368, rate: 0.020 },
{ limit: 77918, rate: 0.040 },
{ limit: 108162, rate: 0.060 },
{ limit: 136701, rate: 0.080 },
{ limit: 698294, rate: 0.093 },
{ limit: 837946, rate: 0.103 },
{ limit: 1256918, rate: 0.113 },
{ limit: 1558664, rate: 0.123 },
{ limit: Infinity, rate: 0.133 }
];
var previousLimit = 0;
for (var i = 0; i previousLimit) {
var taxableInBracket = Math.min(taxableIncome, brackets[i].limit) – previousLimit;
tax += taxableInBracket * brackets[i].rate;
previousLimit = brackets[i].limit;
} else {
break;
}
if (brackets[i].limit === Infinity) break;
}
} else if (filingStatus === 'head_of_household') {
var brackets = [
{ limit: 15618, rate: 0.010 },
{ limit: 37026, rate: 0.020 },
{ limit: 58435, rate: 0.040 },
{ limit: 81120, rate: 0.060 },
{ limit: 102497, rate: 0.080 },
{ limit: 523721, rate: 0.093 },
{ limit: 628419, rate: 0.103 },
{ limit: 942647, rate: 0.113 },
{ limit: 1168999, rate: 0.123 },
{ limit: Infinity, rate: 0.133 }
];
var previousLimit = 0;
for (var i = 0; i previousLimit) {
var taxableInBracket = Math.min(taxableIncome, brackets[i].limit) – previousLimit;
tax += taxableInBracket * brackets[i].rate;
previousLimit = brackets[i].limit;
} else {
break;
}
if (brackets[i].limit === Infinity) break;
}
}
estimatedTaxDisplay.textContent = "$" + tax.toFixed(2);
resultContainer.style.display = "block";
resultContainer.style.backgroundColor = "#28a745"; // Success Green
}