California · Home Equity Loan Interest Deduction
Home Equity Loan Interest Deduction in California (2026)
Deduct interest on home equity loans or HELOCs if the funds are used to buy, build, or substantially improve your home. California has a progressive income tax with a top rate of 13.3%, so a California filer's combined marginal rate on the next dollar at $91,905 of income is about 31.3% (22% federal + 9.3% CA).
2026 savings example for California
Planning estimate for a single filer earning $91,905 (California median household income in LevyIO's state dataset) who removes $5,000 from taxable income. Federal tax uses the 2026 IRS brackets after the $16,100 standard deduction; CA tax uses the state brackets in LevyIO's dataset and assumes the state follows the federal treatment.
Estimated total savings
$1,565
Federal savings
$1,100
$11,389 → $10,289 · 22% bracket
CA state savings
$465
$4,455 → $3,990 · 9.3% marginal
Combined marginal rate
31.3%
≈ $313 saved per $1,000 deducted
Statutory maximum for this item in LevyIO's dataset: $750,000.
Federal × California marginal rates (2026, single)
Gross-income ranges include the federal standard deduction. The CA column is the state marginal rate at the midpoint of each range. The last column is the tax saved per $1,000 deducted at that combined rate.
| Federal bracket | Gross income (single) | CA marginal | Combined | Per $1,000 |
|---|---|---|---|---|
| 10% | $16,100 - $28,500 | 2% | 12% | $120 |
| 12% | $28,500 - $66,500 | 6% | 18% | $180 |
| 22% | $66,500 - $121,800 | 9.3% | 31.3% | $313 |
| 24% | $121,800 - $217,875 | 9.3% | 33.3% | $333 |
| 32% | $217,875 - $272,325 | 9.3% | 41.3% | $413 |
| 35% | $272,325 - $656,700 | 11.3% | 46.3% | $463 |
| 37% | Over $656,700 | 11.3% | 48.3% | $483 |
Eligibility & forms
Homeowners with home equity loans used for home improvements
- Loan must be used to buy, build, or improve home
- Combined with mortgage under $750K limit
- Must itemize deductions
Federal forms: Schedule A, Form 1098
California filing notes
Maximize tax-deferred contributions. Plan for the additional 1% surcharge over $1M. If leaving California, document your move thoroughly. The FTB aggressively audits departing high-income residents.
Common mistakes: Deducting interest on equity loans used for non-home expenses; Exceeding combined mortgage debt limit.
Frequently asked questions
How much can the Home Equity Loan Interest Deduction save a California taxpayer in 2026?
In LevyIO's example, a single filer with $91,905 of income (the California median household income in our state dataset) who removes $5,000 from taxable income saves about $1,100 in 2026 federal tax (22% marginal bracket) plus about $465 in California tax (9.3% state marginal rate), roughly $1,565 combined. It is a planning estimate computed from the 2026 IRS brackets and LevyIO's CA bracket data, not a survey figure.
What is the California income tax rate for 2026?
California has a progressive income tax with a top rate of 13.3%. The CA standard deduction in LevyIO's dataset is $5,706 single / $11,412 married. Highest state income tax (13.3%). Additional 1% Mental Health Services Tax over $1M. No preferential capital gains rate.
Who qualifies for the Home Equity Loan Interest Deduction in California?
Homeowners with home equity loans used for home improvements. The federal rules are the same in every state; the requirements are: Loan must be used to buy, build, or improve home; Combined with mortgage under $750K limit; Must itemize deductions. California filers should confirm on the CA return whether the state follows the federal treatment.
Which forms do I file to claim the Home Equity Loan Interest Deduction?
Federal: Schedule A, Form 1098. California: check the California Franchise Tax Board instructions for the matching state schedule. Common mistakes: Deducting interest on equity loans used for non-home expenses; Exceeding combined mortgage debt limit.
Home Equity Loan Interest Deduction in other states
Sources
Reviewed 2026-09-17. Estimates are educational planning figures computed from the IRS 2026 inflation adjustments and LevyIO's state bracket dataset; they are not tax advice.