California Savings Accounts and the 13.30% Tax Question

California taxes savings interest at a top marginal rate of 13.30% — the highest state income tax rate in the country — which makes the tax question unusually important for anyone deciding where to keep a savings account here. That's on top of federal tax, so a high earner in California keeps meaningfully less of each dollar of interest than a saver in a no-tax state holding the identical balance. The state's bank landscape is dominated by Los Angeles and Pasadena institutions: City National Bank and East West Bank are the two largest FDIC-insured banks headquartered in California on this list, followed by Banc of California, Axos Bank in San Diego, and Cathay Bank in Los Angeles. Axos stands out for running just 3 offices despite $28.24 billion in assets, a sign of how digital-first banking has taken hold even among California's own chartered institutions. None of this changes California's three-year dormancy rule, which applies the same way it does elsewhere — an account left untouched long enough gets turned over to the state.

Banks Headquartered in This State

California's largest state-headquartered banks cluster around Los Angeles. City National Bank, based in Los Angeles, holds $99.95 billion in assets across 71 offices. East West Bank, headquartered in nearby Pasadena, is close behind at $82.47 billion in assets and actually runs more offices, 98, giving it the widest branch presence of the group. Banc of California, also Los Angeles-based, holds $34.64 billion in assets across 88 offices. The more unusual entry is Axos Bank, headquartered in San Diego: with $28.24 billion in assets but only 3 physical offices, it's built almost entirely around digital banking rather than branches, a genuinely different model from the others on this list. Cathay Bank, headquartered in Los Angeles, rounds things out with $24.04 billion in assets and 66 offices, and has historically served California's Asian American communities. Between a heavily branched bank like East West and a nearly branchless one like Axos, California savers have a wider range of models to choose from than most states offer.

State Tax on Savings Interest

California taxes savings interest as ordinary income, and its top marginal rate of 13.30% is the highest of any US state — a fact worth weighing seriously if you're deciding where to hold a large savings balance while living in California. Federal tax applies on top of that, so high earners in particular see a substantial combined bite out of interest income. There's no carve-out that treats savings interest more gently than wages; it's taxed at whatever your marginal state bracket happens to be. As everywhere, a bank that pays you $10 or more in interest during the year must send a Form 1099-INT, and the IRS receives a matching copy, so California savers can't simply avoid the paperwork by not reporting it themselves. For anyone near the top of California's tax brackets, the after-tax return on savings interest is meaningfully lower than the headline number suggests.

When an Account Is Considered Abandoned

California presumes a savings account abandoned after three years without owner activity — no deposits, withdrawals, or documented contact with the bank. This rule catches savings accounts more often than checking accounts, since savings balances are frequently opened with the explicit intention of being left alone to accumulate, which unfortunately looks identical to neglect from a bank's monitoring system. Once three years pass, California law requires the bank to transfer the funds to the state as unclaimed property rather than continue holding them. The countdown resets with any owner-initiated activity: a deposit, a withdrawal, or logging into online or mobile banking generally all count. Given how many people move in and out of California, it's an easy state to leave an old account behind in — but escheated funds aren't gone for good. You can search for and reclaim them through https://unclaimed.org/.

Your State Banking Regulator

California-chartered banks are supervised by the California Department of Financial Protection and Innovation (DFPI), which licenses state banks and investigates consumer complaints against them. A federally chartered bank instead reports to the Office of the Comptroller of the Currency — check whether "National Association" or "N.A." appears in the bank's legal name to tell which applies. For any savings account issue that isn't resolved directly with your bank, the Consumer Financial Protection Bureau also takes complaints from California consumers about fees, account access, and disclosure problems, regardless of which regulator oversees the bank's charter.

A Worked Example

Imagine $25,000 sitting in a California savings account for a year. The interest earned is taxable both federally and by California, and at the state's top marginal rate of 13.30%, the tax drag on that interest is considerably heavier than in most other states — a real factor for high earners deciding how much to keep in taxable savings versus other options. Even setting tax aside, the rate the account actually pays matters enormously at this balance: a modest difference in rate across $25,000 adds up over a year, and rates shift often enough that it's worth checking current offers from California banks and online alternatives rather than assuming an account opened months ago is still competitive.

Frequently Asked Questions

Q: Does California tax savings account interest? A: Yes, at up to 13.30%, the highest top marginal state income tax rate in the country, on top of federal tax.

Q: How long before a California savings account is presumed abandoned? A: Three years without activity, after which the balance is transferred to the state as unclaimed property.

Q: Is Axos Bank's savings account as safe as a branch-heavy bank like East West Bank? A: Yes — both are FDIC-insured, and coverage doesn't depend on how many physical offices a bank operates.

Q: I moved out of California — does my old account still owe California tax? A: Interest earned while you were a California resident is generally taxable there; talk to a tax professional about your specific situation after moving.

Q: Are joint savings accounts covered the same way by FDIC insurance in California? A: Joint accounts can qualify for higher combined FDIC coverage than single accounts — check current FDIC rules for the specifics.